diff --git a/core/blockchain.go b/core/blockchain.go
index 6c849f8e82..b8a3d1a765 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -279,6 +279,7 @@ type BlockChain struct {
 	processor                    Processor // Block transaction processor interface
 	parallelProcessor            Processor // Parallel block transaction processor interface
 	parallelSpeculativeProcesses int       // Number of parallel speculative processes
+	enforceParallelProcessor     bool
 	forker                       *ForkChoice
 	vmConfig                     vm.Config
 	logger                       *tracing.Hooks
@@ -549,7 +550,7 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 }
 
 // NewParallelBlockChain , similar to NewBlockChain, creates a new blockchain object, but with a parallel state processor
-func NewParallelBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis, overrides *ChainOverrides, engine consensus.Engine, vmConfig vm.Config, shouldPreserve func(header *types.Header) bool, txLookupLimit *uint64, checker ethereum.ChainValidator, numprocs int) (*BlockChain, error) {
+func NewParallelBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis, overrides *ChainOverrides, engine consensus.Engine, vmConfig vm.Config, shouldPreserve func(header *types.Header) bool, txLookupLimit *uint64, checker ethereum.ChainValidator, numprocs int, enforce bool) (*BlockChain, error) {
 	bc, err := NewBlockChain(db, cacheConfig, genesis, overrides, engine, vmConfig, shouldPreserve, txLookupLimit, checker)
 
 	if err != nil {
@@ -567,6 +568,7 @@ func NewParallelBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis
 
 	bc.parallelProcessor = NewParallelStateProcessor(chainConfig, bc, engine)
 	bc.parallelSpeculativeProcesses = numprocs
+	bc.enforceParallelProcessor = enforce
 
 	return bc, nil
 }
@@ -602,7 +604,12 @@ func (bc *BlockChain) ProcessBlock(block *types.Block, parent *types.Header) (_
 		parallel bool
 	}
 
-	resultChan := make(chan Result, 2)
+	var resultChanLen int = 2
+	if bc.enforceParallelProcessor {
+		log.Info("Processing block using Block STM only", "number", block.NumberU64())
+		resultChanLen = 1
+	}
+	resultChan := make(chan Result, resultChanLen)
 
 	processorCount := 0
 
@@ -629,7 +636,7 @@ func (bc *BlockChain) ProcessBlock(block *types.Block, parent *types.Header) (_
 		}()
 	}
 
-	if bc.processor != nil {
+	if bc.processor != nil && !bc.enforceParallelProcessor {
 		statedb, err := state.New(parent.Root, bc.stateCache, bc.snaps)
 		if err != nil {
 			return nil, nil, 0, nil, 0, err
diff --git a/core/parallel_state_processor.go b/core/parallel_state_processor.go
index f521764d28..33ca8595e9 100644
--- a/core/parallel_state_processor.go
+++ b/core/parallel_state_processor.go
@@ -40,6 +40,7 @@ import (
 type ParallelEVMConfig struct {
 	Enable               bool
 	SpeculativeProcesses int
+	Enforce              bool
 }
 
 // StateProcessor is a basic Processor, which takes care of transitioning
diff --git a/eth/backend.go b/eth/backend.go
index 818d45cb73..ec50394ca0 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -258,7 +258,7 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 	// check if Parallel EVM is enabled
 	// if enabled, use parallel state processor
 	if config.ParallelEVM.Enable {
-		eth.blockchain, err = core.NewParallelBlockChain(chainDb, cacheConfig, config.Genesis, &overrides, eth.engine, vmConfig, eth.shouldPreserve, &config.TxLookupLimit, checker, config.ParallelEVM.SpeculativeProcesses)
+		eth.blockchain, err = core.NewParallelBlockChain(chainDb, cacheConfig, config.Genesis, &overrides, eth.engine, vmConfig, eth.shouldPreserve, &config.TxLookupLimit, checker, config.ParallelEVM.SpeculativeProcesses, config.ParallelEVM.Enforce)
 	} else {
 		eth.blockchain, err = core.NewBlockChain(chainDb, cacheConfig, config.Genesis, &overrides, eth.engine, vmConfig, eth.shouldPreserve, &config.TxLookupLimit, checker)
 	}
diff --git a/internal/cli/server/config.go b/internal/cli/server/config.go
index 5960fdeab0..0f072d9b5d 100644
--- a/internal/cli/server/config.go
+++ b/internal/cli/server/config.go
@@ -597,6 +597,8 @@ type ParallelEVMConfig struct {
 	Enable bool `hcl:"enable,optional" toml:"enable,optional"`
 
 	SpeculativeProcesses int `hcl:"procs,optional" toml:"procs,optional"`
+
+	Enforce bool `hcl:"enforce,optional" toml:"enforce,optional"`
 }
 
 func DefaultConfig() *Config {
@@ -794,6 +796,7 @@ func DefaultConfig() *Config {
 		ParallelEVM: &ParallelEVMConfig{
 			Enable:               true,
 			SpeculativeProcesses: 8,
+			Enforce:              false,
 		},
 	}
 }
@@ -1196,6 +1199,7 @@ func (c *Config) buildEth(stack *node.Node, accountManager *accounts.Manager) (*
 
 	n.ParallelEVM.Enable = c.ParallelEVM.Enable
 	n.ParallelEVM.SpeculativeProcesses = c.ParallelEVM.SpeculativeProcesses
+	n.ParallelEVM.Enforce = c.ParallelEVM.Enforce
 	n.RPCReturnDataLimit = c.RPCReturnDataLimit
 
 	if c.Ancient != "" {
diff --git a/internal/cli/server/flags.go b/internal/cli/server/flags.go
index 0cf8919b9d..25fc6ce7ba 100644
--- a/internal/cli/server/flags.go
+++ b/internal/cli/server/flags.go
@@ -986,6 +986,13 @@ func (c *Command) Flags(config *Config) *flagset.Flagset {
 		Value:   &c.cliConfig.ParallelEVM.SpeculativeProcesses,
 		Default: c.cliConfig.ParallelEVM.SpeculativeProcesses,
 	})
+	f.BoolFlag(&flagset.BoolFlag{
+		Name:    "parallelevm.enforce",
+		Usage:   "Enforce block processing via Block STM",
+		Value:   &c.cliConfig.ParallelEVM.Enforce,
+		Default: c.cliConfig.ParallelEVM.Enforce,
+	})
+
 	f.Uint64Flag(&flagset.Uint64Flag{
 		Name:    "dev.gaslimit",
 		Usage:   "Initial block gas limit",
diff --git a/miner/worker_test.go b/miner/worker_test.go
index 1f90c79ec1..1d1fcc32f5 100644
--- a/miner/worker_test.go
+++ b/miner/worker_test.go
@@ -973,7 +973,7 @@ func BenchmarkBorMiningBlockSTMMetadata(b *testing.B) {
 	db2 := rawdb.NewMemoryDatabase()
 	back.genesis.MustCommit(db2, triedb.NewDatabase(db2, triedb.HashDefaults))
 
-	chain, _ := core.NewParallelBlockChain(db2, nil, back.genesis, nil, engine, vm.Config{}, nil, nil, nil, 8)
+	chain, _ := core.NewParallelBlockChain(db2, nil, back.genesis, nil, engine, vm.Config{}, nil, nil, nil, 8, false)
 	defer chain.Stop()
 
 	// Ignore empty commit here for less noise.