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541ci Big Block Cadillac V8 - Torque Monster! - Engine Buildup
Blueprint Data
Except as noted, all dimensions are in linear inches. For cam and valvespring specs, see the Camshaft sidebar.
Engine type: Cadillac OHV V-8
Engine builder: Dick Miller Racing
Measures And Volumes
Displacement: 541 ci
Bore x stroke: 4.375 x 4.5
Compression ratio: 10.1:1
Main journal size: 3.25 (Cadillac)
Main bearing clearance: 0.0029-0.0034
Crankshaft endplay: 0.009
Rod-journal size: 2.20 in (big-block Chevy)
Rod-bearing clearance: 0.0029-0.0030 in
Rod side clearance: 0.021-0.024 in
Rod center-to-center: 7.0
Rod/stroke ratio: 1.56:1
Piston-to-bore clearance: 0.0069-0.0073 in
Piston compression distance: 1.547 in
Crank centerline to deck: 10.794 in
Piston deck height: 0.003 in (above block)
Head gasket compressed thickness: 0.039 in
Combustion-chamber volume: 76 cc
Piston ring gap, first groove: 0.028-0.032 in
Piston ring gap, second groove: 0.025-0.028 in
Piston ring gap, oil groove: 0.022-plus in
Camshaft endplay: 0.002-0.005 in
Piston-to-valve clearance: 0.100-plus in
Critical Tightening Values
With Torco MPZ assembly lube
ARP head and main studs: 100 lb-ft
ARP rocker-arm studs: 55 lb-ft
ARP intake bolts: 35 lb-ft
With Oliver assembly lube
ARP bolts in Oliver rods: 30 lb-ft initial; rotate 40 degrees clockwise; recheck torque-should be at least 50 lb-ft
With red thread-locking compound
ARP flexplate bolts: 85 lb-ft
Grade-8 damper bolt: 85 lb-ft
Grade-8 timing-chain bolts: 35 lb-ft
Cam fuel-pump eccentric bolt: 65 lb-ft
Tune-Up
Test facility: Southern Performance
Peak power at rpm: 526.3 hp at 5,000
Peak torque at rpm: 649.3 lb-ft at 3,400
Fuel: 93-octane unleaded pump gas
Timing: 36 degrees
Spark plugs: NGK R-5671A-7, gapped at 0.055
541ci Big Block Cadillac V8 - Torque Monster! - Engine Buildup
Blueprint Data
Except as noted, all dimensions are in linear inches. For cam and valvespring specs, see the Camshaft sidebar.
Engine type: Cadillac OHV V-8
Engine builder: Dick Miller Racing
Measures And Volumes
Displacement: 541 ci
Bore x stroke: 4.375 x 4.5
Compression ratio: 10.1:1
Main journal size: 3.25 (Cadillac)
Main bearing clearance: 0.0029-0.0034
Crankshaft endplay: 0.009
Rod-journal size: 2.20 in (big-block Chevy)
Rod-bearing clearance: 0.0029-0.0030 in
Rod side clearance: 0.021-0.024 in
Rod center-to-center: 7.0
Rod/stroke ratio: 1.56:1
Piston-to-bore clearance: 0.0069-0.0073 in
Piston compression distance: 1.547 in
Crank centerline to deck: 10.794 in
Piston deck height: 0.003 in (above block)
Head gasket compressed thickness: 0.039 in
Combustion-chamber volume: 76 cc
Piston ring gap, first groove: 0.028-0.032 in
Piston ring gap, second groove: 0.025-0.028 in
Piston ring gap, oil groove: 0.022-plus in
Camshaft endplay: 0.002-0.005 in
Piston-to-valve clearance: 0.100-plus in
Critical Tightening Values
With Torco MPZ assembly lube
ARP head and main studs: 100 lb-ft
ARP rocker-arm studs: 55 lb-ft
ARP intake bolts: 35 lb-ft
With Oliver assembly lube
ARP bolts in Oliver rods: 30 lb-ft initial; rotate 40 degrees clockwise; recheck torque-should be at least 50 lb-ft
With red thread-locking compound
ARP flexplate bolts: 85 lb-ft
Grade-8 damper bolt: 85 lb-ft
Grade-8 timing-chain bolts: 35 lb-ft
Cam fuel-pump eccentric bolt: 65 lb-ft
Tune-Up
Test facility: Southern Performance
Peak power at rpm: 526.3 hp at 5,000
Peak torque at rpm: 649.3 lb-ft at 3,400
Fuel: 93-octane unleaded pump gas
Timing: 36 degrees
Spark plugs: NGK R-5671A-7, gapped at 0.055
