diff --git a/packages/block/src/block.ts b/packages/block/src/block.ts
index 031d615b1f..10c2cd60d1 100644
--- a/packages/block/src/block.ts
+++ b/packages/block/src/block.ts
@@ -598,9 +598,9 @@ export class Block {
       }
 
       const expectedExcessBlobGas = parentHeader.calcNextExcessBlobGas()
-      if (this.header.excessBlobGas !== expectedExcessblobGas) {
+      if (this.header.excessBlobGas !== expectedExcessBlobGas) {
         throw new Error(
-          `block excessblobGas mismatch: have ${this.header.excessblobGas}, want ${expectedExcessblobGas}`
+          `block excessBlobGas mismatch: have ${this.header.excessBlobGas}, want ${expectedExcessBlobGas}`
         )
       }
     }
diff --git a/packages/block/src/from-beacon-payload.ts b/packages/block/src/from-beacon-payload.ts
index f0d043715c..f0cea6b412 100644
--- a/packages/block/src/from-beacon-payload.ts
+++ b/packages/block/src/from-beacon-payload.ts
@@ -27,8 +27,8 @@ export type BeaconPayloadJson = {
   block_hash: string
   transactions: string[]
   withdrawals?: BeaconWithdrawal[]
-  data_gas_used?: string
-  excess_data_gas?: string
+  blob_gas_used?: string
+  excess_blob_gas?: string
   parent_beacon_block_root?: string
 }
 
@@ -63,11 +63,11 @@ export function executionPayloadFromBeaconPayload(payload: BeaconPayloadJson): E
     }))
   }
 
-  if (payload.data_gas_used !== undefined && payload.data_gas_used !== null) {
-    executionPayload.blobGasUsed = bigIntToHex(BigInt(payload.data_gas_used))
+  if (payload.blob_gas_used !== undefined && payload.blob_gas_used !== null) {
+    executionPayload.blobGasUsed = bigIntToHex(BigInt(payload.blob_gas_used))
   }
-  if (payload.excess_data_gas !== undefined && payload.excess_data_gas !== null) {
-    executionPayload.excessblobGas = bigIntToHex(BigInt(payload.excess_data_gas))
+  if (payload.excess_blob_gas !== undefined && payload.excess_blob_gas !== null) {
+    executionPayload.excessBlobGas = bigIntToHex(BigInt(payload.excess_blob_gas))
   }
   if (payload.parent_beacon_block_root !== undefined && payload.parent_beacon_block_root !== null) {
     executionPayload.parentBeaconBlockRoot = payload.parent_beacon_block_root
diff --git a/packages/block/src/header-from-rpc.ts b/packages/block/src/header-from-rpc.ts
index 06c843ca62..1f475efeed 100644
--- a/packages/block/src/header-from-rpc.ts
+++ b/packages/block/src/header-from-rpc.ts
@@ -29,7 +29,7 @@ export function blockHeaderFromRpc(blockParams: JsonRpcBlock, options?: BlockOpt
     baseFeePerGas,
     withdrawalsRoot,
     blobGasUsed,
-    excessblobGas,
+    excessBlobGas,
   } = blockParams
 
   const blockHeader = BlockHeader.fromHeaderData(
@@ -52,7 +52,7 @@ export function blockHeaderFromRpc(blockParams: JsonRpcBlock, options?: BlockOpt
       baseFeePerGas,
       withdrawalsRoot,
       blobGasUsed,
-      excessblobGas,
+      excessBlobGas,
     },
     options
   )
diff --git a/packages/block/src/header.ts b/packages/block/src/header.ts
index cca59606d3..27a71e4737 100644
--- a/packages/block/src/header.ts
+++ b/packages/block/src/header.ts
@@ -55,7 +55,7 @@ export class BlockHeader {
   public readonly baseFeePerGas?: bigint
   public readonly withdrawalsRoot?: Uint8Array
   public readonly blobGasUsed?: bigint
-  public readonly excessblobGas?: bigint
+  public readonly excessBlobGas?: bigint
   public readonly parentBeaconBlockRoot?: Uint8Array
 
   public readonly common: Common
@@ -109,7 +109,7 @@ export class BlockHeader {
    */
   public static fromValuesArray(values: BlockHeaderBytes, opts: BlockOptions = {}) {
     const headerData = valuesArrayToHeaderData(values)
-    const { number, baseFeePerGas, excessblobGas, blobGasUsed, parentBeaconBlockRoot } = headerData
+    const { number, baseFeePerGas, excessBlobGas, blobGasUsed, parentBeaconBlockRoot } = headerData
     const header = BlockHeader.fromHeaderData(headerData, opts)
     // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
     if (header.common.isActivatedEIP(1559) && baseFeePerGas === undefined) {
@@ -121,8 +121,8 @@ export class BlockHeader {
     }
     // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
     if (header.common.isActivatedEIP(4844)) {
-      if (excessblobGas === undefined) {
-        throw new Error('invalid header. excessblobGas should be provided')
+      if (excessBlobGas === undefined) {
+        throw new Error('invalid header. excessBlobGas should be provided')
       } else if (blobGasUsed === undefined) {
         throw new Error('invalid header. blobGasUsed should be provided')
       }
@@ -211,7 +211,7 @@ export class BlockHeader {
         : undefined,
       withdrawalsRoot: this.common.isActivatedEIP(4895) ? KECCAK256_RLP : undefined,
       blobGasUsed: this.common.isActivatedEIP(4844) ? BigInt(0) : undefined,
-      excessblobGas: this.common.isActivatedEIP(4844) ? BigInt(0) : undefined,
+      excessBlobGas: this.common.isActivatedEIP(4844) ? BigInt(0) : undefined,
       parentBeaconBlockRoot: this.common.isActivatedEIP(4788) ? zeros(32) : undefined,
     }
 
@@ -221,8 +221,8 @@ export class BlockHeader {
       toType(headerData.withdrawalsRoot, TypeOutput.Uint8Array) ?? hardforkDefaults.withdrawalsRoot
     const blobGasUsed =
       toType(headerData.blobGasUsed, TypeOutput.BigInt) ?? hardforkDefaults.blobGasUsed
-    const excessblobGas =
-      toType(headerData.excessblobGas, TypeOutput.BigInt) ?? hardforkDefaults.excessblobGas
+    const excessBlobGas =
+      toType(headerData.excessBlobGas, TypeOutput.BigInt) ?? hardforkDefaults.excessBlobGas
     const parentBeaconBlockRoot =
       toType(headerData.parentBeaconBlockRoot, TypeOutput.Uint8Array) ??
       hardforkDefaults.parentBeaconBlockRoot
@@ -242,7 +242,7 @@ export class BlockHeader {
         throw new Error('blob gas used can only be provided with EIP4844 activated')
       }
 
-      if (headerData.excessblobGas !== undefined) {
+      if (headerData.excessBlobGas !== undefined) {
         throw new Error('excess blob gas can only be provided with EIP4844 activated')
       }
     }
@@ -271,7 +271,7 @@ export class BlockHeader {
     this.baseFeePerGas = baseFeePerGas
     this.withdrawalsRoot = withdrawalsRoot
     this.blobGasUsed = blobGasUsed
-    this.excessblobGas = excessblobGas
+    this.excessBlobGas = excessBlobGas
     this.parentBeaconBlockRoot = parentBeaconBlockRoot
     this._genericFormatValidation()
     this._validateDAOExtraData()
@@ -580,12 +580,12 @@ export class BlockHeader {
    * @returns the price in gwei per unit of blob gas spent
    */
   getblobGasPrice(): bigint {
-    if (this.excessblobGas === undefined) {
-      throw new Error('header must have excessblobGas field populated')
+    if (this.excessBlobGas === undefined) {
+      throw new Error('header must have excessBlobGas field populated')
     }
     return fakeExponential(
       this.common.param('gasPrices', 'minblobGasPrice'),
-      this.excessblobGas,
+      this.excessBlobGas,
       this.common.param('gasConfig', 'blobGasPriceUpdateFraction')
     )
   }
@@ -607,15 +607,15 @@ export class BlockHeader {
   /**
    * Calculates the excess blob gas for next (hopefully) post EIP 4844 block.
    */
-  public calcNextExcessblobGas(): bigint {
+  public calcNextExcessBlobGas(): bigint {
     // The validation of the fields and 4844 activation is already taken care in BlockHeader constructor
-    const targetGasConsumed = (this.excessblobGas ?? BigInt(0)) + (this.blobGasUsed ?? BigInt(0))
-    const targetblobGasPerBlock = this.common.param('gasConfig', 'targetblobGasPerBlock')
+    const targetGasConsumed = (this.excessBlobGas ?? BigInt(0)) + (this.blobGasUsed ?? BigInt(0))
+    const targetBlobGasPerBlock = this.common.param('gasConfig', 'targetBlobGasPerBlock')
 
-    if (targetGasConsumed <= targetblobGasPerBlock) {
+    if (targetGasConsumed <= targetBlobGasPerBlock) {
       return BigInt(0)
     } else {
-      return targetGasConsumed - targetblobGasPerBlock
+      return targetGasConsumed - targetBlobGasPerBlock
     }
   }
 
@@ -650,7 +650,7 @@ export class BlockHeader {
     }
     if (this.common.isActivatedEIP(4844) === true) {
       rawItems.push(bigIntToUnpaddedBytes(this.blobGasUsed!))
-      rawItems.push(bigIntToUnpaddedBytes(this.excessblobGas!))
+      rawItems.push(bigIntToUnpaddedBytes(this.excessBlobGas!))
     }
     if (this.common.isActivatedEIP(4788) === true) {
       rawItems.push(this.parentBeaconBlockRoot!)
@@ -923,7 +923,7 @@ export class BlockHeader {
     }
     if (this.common.isActivatedEIP(4844) === true) {
       jsonDict.blobGasUsed = bigIntToHex(this.blobGasUsed!)
-      jsonDict.excessblobGas = bigIntToHex(this.excessblobGas!)
+      jsonDict.excessBlobGas = bigIntToHex(this.excessBlobGas!)
     }
     if (this.common.isActivatedEIP(4788) === true) {
       jsonDict.parentBeaconBlockRoot = bytesToHex(this.parentBeaconBlockRoot!)
diff --git a/packages/block/src/helpers.ts b/packages/block/src/helpers.ts
index edfe4b08c4..e26ebeb5d2 100644
--- a/packages/block/src/helpers.ts
+++ b/packages/block/src/helpers.ts
@@ -41,7 +41,7 @@ export function valuesArrayToHeaderData(values: BlockHeaderBytes): HeaderData {
     baseFeePerGas,
     withdrawalsRoot,
     blobGasUsed,
-    excessblobGas,
+    excessBlobGas,
     parentBeaconBlockRoot,
   ] = values
 
@@ -71,7 +71,7 @@ export function valuesArrayToHeaderData(values: BlockHeaderBytes): HeaderData {
     baseFeePerGas,
     withdrawalsRoot,
     blobGasUsed,
-    excessblobGas,
+    excessBlobGas,
     parentBeaconBlockRoot,
   }
 }
diff --git a/packages/block/src/types.ts b/packages/block/src/types.ts
index 90f4e33fe3..be47d9e81a 100644
--- a/packages/block/src/types.ts
+++ b/packages/block/src/types.ts
@@ -93,7 +93,7 @@ export interface HeaderData {
   baseFeePerGas?: BigIntLike
   withdrawalsRoot?: BytesLike
   blobGasUsed?: BigIntLike
-  excessblobGas?: BigIntLike
+  excessBlobGas?: BigIntLike
   parentBeaconBlockRoot?: BytesLike
 }
 
@@ -158,7 +158,7 @@ export interface JsonHeader {
   baseFeePerGas?: string
   withdrawalsRoot?: string
   blobGasUsed?: string
-  excessblobGas?: string
+  excessBlobGas?: string
   parentBeaconBlockRoot?: string
 }
 
@@ -190,7 +190,7 @@ export interface JsonRpcBlock {
   withdrawals?: Array<JsonRpcWithdrawal> // If EIP-4895 is enabled for this block, array of withdrawals
   withdrawalsRoot?: string // If EIP-4895 is enabled for this block, the root of the withdrawal trie of the block.
   blobGasUsed?: string // If EIP-4844 is enabled for this block, returns the blob gas used for the block
-  excessblobGas?: string // If EIP-4844 is enabled for this block, returns the excess blob gas for the block
+  excessBlobGas?: string // If EIP-4844 is enabled for this block, returns the excess blob gas for the block
   parentBeaconBlockRoot?: string // If EIP-4788 is enabled for this block, returns parent beacon block root
 }
 
@@ -220,6 +220,6 @@ export type ExecutionPayload = {
   transactions: PrefixedHexString[] // Array of DATA - Array of transaction rlp strings,
   withdrawals?: WithdrawalV1[] // Array of withdrawal objects
   blobGasUsed?: PrefixedHexString // QUANTITY, 64 Bits
-  excessblobGas?: PrefixedHexString // QUANTITY, 64 Bits
+  excessBlobGas?: PrefixedHexString // QUANTITY, 64 Bits
   parentBeaconBlockRoot?: PrefixedHexString // QUANTITY, 64 Bits
 }
diff --git a/packages/block/test/eip4788block.spec.ts b/packages/block/test/eip4788block.spec.ts
index cea881e1d0..e74d5b7fc9 100644
--- a/packages/block/test/eip4788block.spec.ts
+++ b/packages/block/test/eip4788block.spec.ts
@@ -44,7 +44,7 @@ describe('EIP4788 header tests', () => {
     assert.doesNotThrow(() => {
       BlockHeader.fromHeaderData(
         {
-          excessblobGas: 0n,
+          excessBlobGas: 0n,
           blobGasUsed: 0n,
           parentBeaconBlockRoot: zeros(32),
         },
@@ -64,7 +64,7 @@ describe('EIP4788 header tests', () => {
     assert.equal(
       block.toJSON().header?.parentBeaconBlockRoot,
       bytesToHex(zeros(32)),
-      'JSON output includes excessblobGas'
+      'JSON output includes excessBlobGas'
     )
   })
 })
diff --git a/packages/block/test/eip4844block.spec.ts b/packages/block/test/eip4844block.spec.ts
index a63bf0159a..05ef8a054a 100644
--- a/packages/block/test/eip4844block.spec.ts
+++ b/packages/block/test/eip4844block.spec.ts
@@ -41,7 +41,7 @@ describe('EIP4844 header tests', () => {
         () => {
           BlockHeader.fromHeaderData(
             {
-              excessblobGas: 1n,
+              excessBlobGas: 1n,
             },
             {
               common: earlyCommon,
@@ -50,7 +50,7 @@ describe('EIP4844 header tests', () => {
         },
         'excess blob gas can only be provided with EIP4844 activated',
         undefined,
-        'should throw when setting excessblobGas with EIP4844 not being activated'
+        'should throw when setting excessBlobGas with EIP4844 not being activated'
       )
 
       assert.throws(
@@ -69,19 +69,19 @@ describe('EIP4844 header tests', () => {
         'should throw when setting blobGasUsed with EIP4844 not being activated'
       )
 
-      const excessblobGas = BlockHeader.fromHeaderData(
+      const excessBlobGas = BlockHeader.fromHeaderData(
         {},
         { common, skipConsensusFormatValidation: true }
-      ).excessblobGas
+      ).excessBlobGas
       assert.equal(
-        excessblobGas,
+        excessBlobGas,
         0n,
         'instantiates block with reasonable default excess blob gas value when not provided'
       )
       assert.doesNotThrow(() => {
         BlockHeader.fromHeaderData(
           {
-            excessblobGas: 0n,
+            excessBlobGas: 0n,
           },
           {
             common,
@@ -97,9 +97,9 @@ describe('EIP4844 header tests', () => {
         { common, skipConsensusFormatValidation: true }
       )
       assert.equal(
-        block.toJSON().header?.excessblobGas,
+        block.toJSON().header?.excessBlobGas,
         '0x0',
-        'JSON output includes excessblobGas'
+        'JSON output includes excessBlobGas'
       )
     }
   })
@@ -110,40 +110,40 @@ describe('blob gas tests', () => {
     if (isBrowser() === false) {
       const preShardingHeader = BlockHeader.fromHeaderData({})
 
-      let excessblobGas = preShardingHeader.calcNextExcessblobGas()
+      let excessBlobGas = preShardingHeader.calcNextExcessBlobGas()
       assert.equal(
-        excessblobGas,
+        excessBlobGas,
         0n,
         'excess blob gas where 4844 is not active on header should be 0'
       )
 
       assert.throws(
         () => preShardingHeader.calcDataFee(1),
-        'header must have excessblobGas field',
+        'header must have excessBlobGas field',
         undefined,
-        'calcDataFee throws when header has no excessblobGas field'
+        'calcDataFee throws when header has no excessBlobGas field'
       )
 
       const lowGasHeader = BlockHeader.fromHeaderData(
-        { number: 1, excessblobGas: 5000 },
+        { number: 1, excessBlobGas: 5000 },
         { common, skipConsensusFormatValidation: true }
       )
 
-      excessblobGas = lowGasHeader.calcNextExcessblobGas()
-      let blobGasPrice = lowGasHeader.getblobGasPrice()
+      excessBlobGas = lowGasHeader.calcNextExcessBlobGas()
+      let blobGasPrice = lowGasHeader.getBlobGasPrice()
       assert.equal(
-        excessblobGas,
+        excessBlobGas,
         0n,
         'excess blob gas should be 0 for small parent header blob gas'
       )
       assert.equal(blobGasPrice, 1n, 'blob gas price should be 1n when low or no excess blob gas')
       const highGasHeader = BlockHeader.fromHeaderData(
-        { number: 1, excessblobGas: 6291456, blobGasUsed: BigInt(6) * blobGasPerBlob },
+        { number: 1, excessBlobGas: 6291456, blobGasUsed: BigInt(6) * blobGasPerBlob },
         { common, skipConsensusFormatValidation: true }
       )
-      excessblobGas = highGasHeader.calcNextExcessblobGas()
+      excessBlobGas = highGasHeader.calcNextExcessBlobGas()
       blobGasPrice = highGasHeader.getblobGasPrice()
-      assert.equal(excessblobGas, 6684672n)
+      assert.equal(excessBlobGas, 6684672n)
       assert.equal(blobGasPrice, 6n, 'computed correct blob gas price')
 
       assert.equal(lowGasHeader.calcDataFee(1), 131072n, 'compute data fee correctly')
@@ -184,10 +184,10 @@ describe('transaction validation tests', () => {
       ).sign(randomBytes(32))
 
       const parentHeader = BlockHeader.fromHeaderData(
-        { number: 1n, excessblobGas: 4194304, blobGasUsed: 0 },
+        { number: 1n, excessBlobGas: 4194304, blobGasUsed: 0 },
         { common, skipConsensusFormatValidation: true }
       )
-      const excessblobGas = parentHeader.calcNextExcessblobGas()
+      const excessBlobGas = parentHeader.calcNextExcessBlobGas()
 
       // eslint-disable-next-line no-inner-declarations
       function getBlock(transactions: TypedTransaction[]) {
@@ -197,7 +197,7 @@ describe('transaction validation tests', () => {
           {
             number: 2n,
             parentHash: parentHeader.hash(),
-            excessblobGas,
+            excessBlobGas,
             blobGasUsed: BigInt(blobs) * blobGasPerBlob,
           },
           { common, skipConsensusFormatValidation: true }
diff --git a/packages/block/test/from-beacon-payload.spec.ts b/packages/block/test/from-beacon-payload.spec.ts
index 1b65d248fb..4476585b63 100644
--- a/packages/block/test/from-beacon-payload.spec.ts
+++ b/packages/block/test/from-beacon-payload.spec.ts
@@ -21,7 +21,7 @@ describe('[fromExecutionPayloadJson]: 4844 devnet 5', () => {
       try {
         const block = await Block.fromBeaconPayloadJson(payload, { common })
         const parentHeader = BlockHeader.fromHeaderData(
-          { excessblobGas: BigInt(0), blobGasUsed: block.header.excessblobGas! + BigInt(393216) },
+          { excessBlobGas: BigInt(0), blobGasUsed: block.header.excessBlobGas! + BigInt(393216) },
           { common }
         )
         block.validateBlobTransactions(parentHeader)
@@ -56,12 +56,12 @@ describe('[fromExecutionPayloadJson]: 4844 devnet 5', () => {
         },
         { common }
       )
-      const parentHeader = BlockHeader.fromHeaderData({ excessblobGas: BigInt(0) }, { common })
+      const parentHeader = BlockHeader.fromHeaderData({ excessBlobGas: BigInt(0) }, { common })
       block.validateBlobTransactions(parentHeader)
       assert.fail(`should have failed constructing the block`)
     } catch (e) {
       assert.ok(true, `correctly failed constructing block, error: ${e}`)
-      assert.ok(`${e}`.includes('block excessblobGas mismatch'), 'failed with correct error')
+      assert.ok(`${e}`.includes('block excessBlobGas mismatch'), 'failed with correct error')
     }
   })
 })
diff --git a/packages/blockchain/src/blockchain.ts b/packages/blockchain/src/blockchain.ts
index 967a8e98b1..0cc0c37b41 100644
--- a/packages/blockchain/src/blockchain.ts
+++ b/packages/blockchain/src/blockchain.ts
@@ -612,9 +612,9 @@ export class Blockchain implements BlockchainInterface {
     }
 
     if (header.common.isActivatedEIP(4844) === true) {
-      const expectedExcessblobGas = parentHeader.calcNextExcessblobGas()
-      if (header.excessblobGas !== expectedExcessblobGas) {
-        throw new Error(`expected blob gas: ${expectedExcessblobGas}, got: ${header.excessblobGas}`)
+      const expectedExcessBlobGas = parentHeader.calcNextExcessBlobGas()
+      if (header.excessBlobGas !== expectedExcessBlobGas) {
+        throw new Error(`expected blob gas: ${expectedExcessBlobGas}, got: ${header.excessBlobGas}`)
       }
     }
   }
diff --git a/packages/client/src/miner/pendingBlock.ts b/packages/client/src/miner/pendingBlock.ts
index 612de4a2a9..7394c3f2b1 100644
--- a/packages/client/src/miner/pendingBlock.ts
+++ b/packages/client/src/miner/pendingBlock.ts
@@ -141,7 +141,7 @@ export class PendingBlock {
 
     const builder = await vm.buildBlock({
       parentBlock,
-      // excessblobGas will be correctly calculated and set in buildBlock constructor,
+      // excessBlobGas will be correctly calculated and set in buildBlock constructor,
       // unless already explicity provided in headerData
       headerData: {
         ...headerData,
diff --git a/packages/client/src/rpc/modules/engine.ts b/packages/client/src/rpc/modules/engine.ts
index 8ceb64f240..ee61ae4580 100644
--- a/packages/client/src/rpc/modules/engine.ts
+++ b/packages/client/src/rpc/modules/engine.ts
@@ -51,7 +51,7 @@ type WithdrawalV1 = Exclude<ExecutionPayload['withdrawals'], undefined>[number]
 export type ExecutionPayloadV1 = ExecutionPayload
 export type ExecutionPayloadV2 = ExecutionPayloadV1 & { withdrawals: WithdrawalV1[] }
 // parentBeaconBlockRoot comes separate in new payloads and needs to be added to payload data
-export type ExecutionPayloadV3 = ExecutionPayloadV2 & { excessblobGas: Uint64; blobGasUsed: Uint64 }
+export type ExecutionPayloadV3 = ExecutionPayloadV2 & { excessBlobGas: Uint64; blobGasUsed: Uint64 }
 
 export type ForkchoiceStateV1 = {
   headBlockHash: Bytes32
@@ -131,7 +131,7 @@ const executionPayloadV2FieldValidators = {
 const executionPayloadV3FieldValidators = {
   ...executionPayloadV2FieldValidators,
   blobGasUsed: validators.uint64,
-  excessblobGas: validators.uint64,
+  excessBlobGas: validators.uint64,
 }
 
 const forkchoiceFieldValidators = {
@@ -184,7 +184,7 @@ export const blockToExecutionPayload = (block: Block, value: bigint, bundle?: Bl
     extraData: header.extraData!,
     baseFeePerGas: header.baseFeePerGas!,
     blobGasUsed: header.blobGasUsed,
-    excessblobGas: header.excessblobGas,
+    excessBlobGas: header.excessBlobGas,
     blockHash: bytesToHex(block.hash()),
     prevRandao: header.mixHash!,
     transactions,
diff --git a/packages/client/src/rpc/modules/eth.ts b/packages/client/src/rpc/modules/eth.ts
index 67c3975686..7a33acae30 100644
--- a/packages/client/src/rpc/modules/eth.ts
+++ b/packages/client/src/rpc/modules/eth.ts
@@ -130,7 +130,7 @@ const jsonRpcBlock = async (
     baseFeePerGas: header.baseFeePerGas,
     ...withdrawalsAttr,
     blobGasUsed: header.blobGasUsed,
-    excessblobGas: header.excessblobGas,
+    excessBlobGas: header.excessBlobGas,
   }
 }
 
diff --git a/packages/client/src/rpc/util/CLConnectionManager.ts b/packages/client/src/rpc/util/CLConnectionManager.ts
index 2c67cac52e..e276787af5 100644
--- a/packages/client/src/rpc/util/CLConnectionManager.ts
+++ b/packages/client/src/rpc/util/CLConnectionManager.ts
@@ -157,9 +157,9 @@ export class CLConnectionManager {
     if ('withdrawals' in payload.payload && payload.payload.withdrawals !== null) {
       msg += ` withdrawals=${(payload.payload as ExecutionPayloadV2).withdrawals.length}`
     }
-    if ('excessblobGas' in payload.payload && payload.payload.excessblobGas !== null) {
-      msg += ` blobGasUsed=${(payload.payload as ExecutionPayloadV3).blobGasUsed} excessblobGas=${
-        (payload.payload as ExecutionPayloadV3).excessblobGas
+    if ('excessBlobGas' in payload.payload && payload.payload.excessBlobGas !== null) {
+      msg += ` blobGasUsed=${(payload.payload as ExecutionPayloadV3).blobGasUsed} excessBlobGas=${
+        (payload.payload as ExecutionPayloadV3).excessBlobGas
       }`
     }
     return msg
diff --git a/packages/client/test/rpc/engine/getPayloadV3.spec.ts b/packages/client/test/rpc/engine/getPayloadV3.spec.ts
index 12b49752b1..a248df1a70 100644
--- a/packages/client/test/rpc/engine/getPayloadV3.spec.ts
+++ b/packages/client/test/rpc/engine/getPayloadV3.spec.ts
@@ -127,7 +127,7 @@ describe(method, () => {
         '0x0a4f946a9dac3f6d2b86d02dfa6cf221b4fe72bbaff51b50cee4c5784156dd52',
         'built expected block'
       )
-      assert.equal(executionPayload.excessblobGas, '0x0', 'correct execess blob gas')
+      assert.equal(executionPayload.excessBlobGas, '0x0', 'correct execess blob gas')
       assert.equal(executionPayload.blobGasUsed, '0x20000', 'correct blob gas used')
       const { commitments, proofs, blobs } = blobsBundle
       assert.ok(
diff --git a/packages/client/test/rpc/engine/newPayloadV3.spec.ts b/packages/client/test/rpc/engine/newPayloadV3.spec.ts
index 3cdc3d5c5a..ff49e763b8 100644
--- a/packages/client/test/rpc/engine/newPayloadV3.spec.ts
+++ b/packages/client/test/rpc/engine/newPayloadV3.spec.ts
@@ -37,7 +37,7 @@ describe(`${method}: call with executionPayloadV3`, () => {
       ...blockData,
       withdrawals: [],
       blobGasUsed: '0x0',
-      excessblobGas: '0x0',
+      excessBlobGas: '0x0',
     }
 
     const req = params(method, [validBlock, [], parentBeaconBlockRoot])
@@ -62,7 +62,7 @@ describe(`${method}: call with executionPayloadV3`, () => {
       timestamp: bigIntToHex(BigInt(cancunTime)),
       withdrawals: [],
       blobGasUsed: '0x0',
-      excessblobGas: '0x0',
+      excessBlobGas: '0x0',
       blockHash: '0x6ec6f32e6931199f8f84faf46a59bc9a1e65a23aa73ca21278b5cb48aa2d059d',
       stateRoot: '0x454a9db6943b17a5f88aea507d0c3f4420d533d143b4eb5194cc7589d721b024',
     }
diff --git a/packages/client/test/rpc/engine/newPayloadV3VersionedHashes.spec.ts b/packages/client/test/rpc/engine/newPayloadV3VersionedHashes.spec.ts
index c28ec56ac8..6e236ba517 100644
--- a/packages/client/test/rpc/engine/newPayloadV3VersionedHashes.spec.ts
+++ b/packages/client/test/rpc/engine/newPayloadV3VersionedHashes.spec.ts
@@ -12,7 +12,7 @@ import type { HttpServer } from 'jayson'
 
 const method = 'engine_newPayloadV3'
 
-// blocks are missing excessblobGas and blobGasUsed which will be set to default 0 for 4844 blocks
+// blocks are missing excessBlobGas and blobGasUsed which will be set to default 0 for 4844 blocks
 // however its not required to set to correct value to test for versioned hashes test cases
 const [blockData] = blocks
 
@@ -41,7 +41,7 @@ describe(`${method}: Cancun validations`, () => {
         blockHash: '0xb8b9607bd09f0c18bccfa4dcb6fe355f07d383c902f0fc2a1671cf20792e131c',
         withdrawals: [],
         blobGasUsed: '0x0',
-        excessblobGas: '0x0',
+        excessBlobGas: '0x0',
       },
       // versioned hashes
       ['0x3434', '0x2334'],
@@ -73,7 +73,7 @@ describe(`${method}: Cancun validations`, () => {
         transactions: [txString, txString],
         withdrawals: [],
         blobGasUsed: '0x40000',
-        excessblobGas: '0x0',
+        excessBlobGas: '0x0',
       },
     ]
     req = params(method, blockDataNoneHashes)
@@ -89,7 +89,7 @@ describe(`${method}: Cancun validations`, () => {
         transactions: [txString, txString],
         withdrawals: [],
         blobGasUsed: '0x40000',
-        excessblobGas: '0x0',
+        excessBlobGas: '0x0',
       },
       txVersionedHashesString,
     ]
@@ -107,7 +107,7 @@ describe(`${method}: Cancun validations`, () => {
         blockHash: '0xeea272bb9ac158550c645a1b0666727a5fefa4a865f8d4c642a87143d2abef39',
         withdrawals: [],
         blobGasUsed: '0x40000',
-        excessblobGas: '0x0',
+        excessBlobGas: '0x0',
         // two blob transactions but missing versioned hash of second
         transactions: [txString, txString],
       },
@@ -131,7 +131,7 @@ describe(`${method}: Cancun validations`, () => {
         blockHash: '0xeea272bb9ac158550c645a1b0666727a5fefa4a865f8d4c642a87143d2abef39',
         withdrawals: [],
         blobGasUsed: '0x40000',
-        excessblobGas: '0x0',
+        excessBlobGas: '0x0',
         // two blob transactions but mismatching versioned hash of second
         transactions: [txString, txString],
       },
@@ -155,7 +155,7 @@ describe(`${method}: Cancun validations`, () => {
         blockHash: '0xeea272bb9ac158550c645a1b0666727a5fefa4a865f8d4c642a87143d2abef39',
         withdrawals: [],
         blobGasUsed: '0x40000',
-        excessblobGas: '0x0',
+        excessBlobGas: '0x0',
         // two blob transactions with matching versioned hashes
         transactions: [txString, txString],
       },
diff --git a/packages/client/test/sim/sharding.spec.ts b/packages/client/test/sim/sharding.spec.ts
index 3094f56ab6..16259af0b3 100644
--- a/packages/client/test/sim/sharding.spec.ts
+++ b/packages/client/test/sim/sharding.spec.ts
@@ -136,7 +136,7 @@ describe('sharding/eip4844 hardfork tests', async () => {
       [txReceipt.result.blockHash, false],
       2.0
     )
-    assert.ok(BigInt(block1.result.excessblobGas) > 0n, 'block1 has excess blob gas > 0')
+    assert.ok(BigInt(block1.result.excessBlobGas) > 0n, 'block1 has excess blob gas > 0')
   })
 
   it('point precompile contract test', async () => {
diff --git a/packages/common/src/eips.ts b/packages/common/src/eips.ts
index 7d207452af..cbe2146a7f 100644
--- a/packages/common/src/eips.ts
+++ b/packages/common/src/eips.ts
@@ -394,7 +394,7 @@ export const EIPs: EIPsDict = {
         v: 131072,
         d: 'The base fee for blob gas per blob',
       },
-      targetblobGasPerBlock: {
+      targetBlobGasPerBlock: {
         v: 393216,
         d: 'The target blob gas consumed per block',
       },
diff --git a/packages/common/src/types.ts b/packages/common/src/types.ts
index 58f1307ad3..c882be2bc4 100644
--- a/packages/common/src/types.ts
+++ b/packages/common/src/types.ts
@@ -46,7 +46,7 @@ export interface GenesisBlockConfig {
   nonce: string
   extraData: string
   baseFeePerGas?: string
-  excessblobGas?: string
+  excessBlobGas?: string
 }
 
 export interface HardforkTransitionConfig {
diff --git a/packages/common/src/utils.ts b/packages/common/src/utils.ts
index 15ed14c45c..8a6d0bcd05 100644
--- a/packages/common/src/utils.ts
+++ b/packages/common/src/utils.ts
@@ -37,7 +37,7 @@ function parseGethParams(json: any, mergeForkIdPostMerge: boolean = true) {
     gasLimit,
     coinbase,
     baseFeePerGas,
-    excessblobGas,
+    excessBlobGas,
   }: {
     name: string
     config: any
@@ -46,7 +46,7 @@ function parseGethParams(json: any, mergeForkIdPostMerge: boolean = true) {
     gasLimit: string
     coinbase: string
     baseFeePerGas: string
-    excessblobGas: string
+    excessBlobGas: string
   } = json
   let { extraData, timestamp, nonce }: { extraData: string; timestamp: string; nonce: string } =
     json
@@ -87,7 +87,7 @@ function parseGethParams(json: any, mergeForkIdPostMerge: boolean = true) {
       mixHash,
       coinbase,
       baseFeePerGas,
-      excessblobGas,
+      excessBlobGas,
     },
     hardfork: undefined as string | undefined,
     hardforks: [] as ConfigHardfork[],
diff --git a/packages/vm/src/buildBlock.ts b/packages/vm/src/buildBlock.ts
index 35a9ae89aa..3e8f93c2c3 100644
--- a/packages/vm/src/buildBlock.ts
+++ b/packages/vm/src/buildBlock.ts
@@ -90,9 +90,9 @@ export class BlockBuilder {
 
     if (
       this.vm.common.isActivatedEIP(4844) === true &&
-      typeof this.headerData.excessblobGas === 'undefined'
+      typeof this.headerData.excessBlobGas === 'undefined'
     ) {
-      this.headerData.excessblobGas = opts.parentBlock.header.calcNextExcessblobGas()
+      this.headerData.excessBlobGas = opts.parentBlock.header.calcNextExcessBlobGas()
     }
   }
 
@@ -223,7 +223,7 @@ export class BlockBuilder {
     const header = {
       ...this.headerData,
       gasUsed: this.gasUsed,
-      // correct excessblobGas should already part of headerData used above
+      // correct excessBlobGas should already part of headerData used above
       blobGasUsed,
     }
 
@@ -305,7 +305,7 @@ export class BlockBuilder {
       logsBloom,
       gasUsed,
       timestamp,
-      // correct excessblobGas should already be part of headerData used above
+      // correct excessBlobGas should already be part of headerData used above
       blobGasUsed,
     }
 
@@ -353,7 +353,6 @@ export class BlockBuilder {
 }
 
 export async function buildBlock(this: VM, opts: BuildBlockOpts): Promise<BlockBuilder> {
-  // let opts override excessblobGas if there is some value passed there
   const blockBuilder = new BlockBuilder(this, opts)
   await blockBuilder.initState()
   return blockBuilder
diff --git a/packages/vm/test/api/runTx.spec.ts b/packages/vm/test/api/runTx.spec.ts
index d14eec3b52..ff4631f305 100644
--- a/packages/vm/test/api/runTx.spec.ts
+++ b/packages/vm/test/api/runTx.spec.ts
@@ -882,7 +882,7 @@ describe('runTx tests', () => {
             {
               header: BlockHeader.fromHeaderData(
                 {
-                  excessblobGas: 0n,
+                  excessBlobGas: 0n,
                   number: 1,
                   parentHash: blockchain.genesisBlock.hash(),
                 },
@@ -910,7 +910,7 @@ describe('runTx tests', () => {
           {
             header: BlockHeader.fromHeaderData(
               {
-                excessblobGas: 1n,
+                excessBlobGas: 1n,
                 number: 2,
                 parentHash: (await blockchain.getBlock(1n)).hash(), // Faking parent hash with getBlock stub
               },