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Engine Build Combos - Horsepower Guaranteed

By Miles Cook, Photography by PPC Archives

Budget Big Rodent Chevy
Make and displacement: Chevy 468
Block: Chevy 454 truck block, two-bolt mains
Bore and stroke: 4.31x4.00
Crankshaft: Chevy 454 truck, reconditioned and machined
Connecting rods: Chevy 454 truck reconditioned
Pistons: TRW forged 0.060-over
Piston rings: Speed-Pro moly
Compression ratio: 10.2:1
Camshaft: Crower hydraulic flat-tappet
PN: 01245
Valve lift in inches: 0.578/0.593
Duration in degrees (advertised): 311/316
Duration in degrees (0.050-inch tappet lift): 246/250
Int./exh. lobe separation: 112
Intake-lobe centerline: 108
Rocker arms: Comp Cams 1.7:1 roller-tip, long slot
Cylinder heads: Chevy 454 ported, Manley valves
Intake and EFI system: Holley Dominator intake and 850-cfm carb
Ignition: Mallory Comp 9000 distributor
Peak power: 512.6hp at 6,200 rpm
Peak torque: 500.1 lb-ft at 4,800 rpm
Proposed cost of engine with some used parts (in 1995): $4,100
Magazine and issue date of original story: Hot Rod, Sept. '95, p. 74

Bionic Rat
Make and displacement: Chevy 502
Block: GM 502 crate-motor block
Bore and stroke: 4.47x4.00
Crankshaft: GM forged 1053 steel
Connecting rods: GM forged 4340 steel, 6.135-inch center-to-center length
Pistons: JE forged
Piston rings: Top: Speed-Pro, 2mm thick, 0.018 gap; second: Total Seal two-piece, 1.5mm groove, 0.014 gap; oil: Speed-Pro standard tension, 4mm thick
Compression ratio: 8.5:1
Camshaft: Crane hydraulic flat-tappet
PN: H-240/322-2-14
Valve lift in inches: 0.547/0.568
Duration in degrees (advertised): 284/294
Duration in degrees (0.050-inch tappet lift): 240/250
Int./exh. lobe separation: 114 degrees
Intake-lobe centerline: 109
Rocker arms: Iskenderian 1.7:1, billet-aluminum roller
Cylinder heads: GM Signature Series aluminum oval-port, minor bowl and chamber work, Manley 2.19/1.88 valves, 120cc chambers
Intake and EFI system: ACCEL closed-loop EFI, 1,000-cfm four-barrel throttle body
Ignition: ACCEL 300+ distributor
Peak power: 529.1hp at 5,300 rpm
Peak torque: 528.9 lb-ft at 3,500 rpm
Magazine and issue date of original story: Car Craft, Jun. '97, p. 57

Max-Screamin' 289
Make and displacement: Ford 289
Block: Ford SVO 289/302 A4 race block (PN M-6010-A4)
Bore and stroke: 4.00x2.87
Crankshaft: Moldex forged-steel
Connecting rods: Probe forged-steel, stock 5.155-inch center-to-center length
Pistons: Probe forged aluminum
Piston rings: Sealed Power
Compression ratio: 12.0:1
Camshaft: Crane solid-lifter roller
PN: Custom-grind
Valve lift in inches: 0.609/0.614
Duration in degrees (advertised): NA
Duration in degrees (0.050-inch tappet lift): 254/258
Int./exh. lobe separation: 108
Intake-lobe centerline: NA
Rocker arms: Crane 1.6:1 aluminum roller
Cylinder heads: World Products Windsor cast-iron, PN 5302A, Extrude-Hone ported
Intake and EFI system: Factory Ford Cobra Intake, BG Fuel Systems 750 cfm
Ignition: MSD billet distributor
Peak power: 473hp at 7,500 rpm
Peak torque: 361 lb-ft at 6,000
Magazine and issue date of original story: Mustang & Fords, Mar. '97, p. 42

By Miles Cook
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