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More Horsepower for Less - 707 HP For $6,720

With a swap-meet block and AFR heads, we made a cheapo stroker anyone can build.

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DESCRIPTION PN SOURCE PRICE
Used 489 short-block --- Swap meet $800.00
Comp roller, XR292R 11-773-8 Summit Racing 245.88
Comp, roller lifters, 819-16 Summit Racing 304.95
Comp, roller rockers 1320-16 Summit Racing 286.95
Comp, timing set 7110 Summit Racing 105.99
Comp, pushrods, exhaust 7755-1 Compcamstore 12.41 x 8
Comp, pushrods, Intake 7932-1 Compcamstore 12.64 x 8
Comp, lash caps 621-16 Summit Racing 34.75
Comp, cam button 205 Summit Racing 8.39
Comp, 1-inch open spacer VH311 Summit Racing 20.69
Tapered ring compressor 104310 Powerhouse 29.00
Pro crank turning socket 103055 Powerhouse 29.95
AFR 305cc, as-cast 3050-1 buyAFR.com 2,045.95
F-M ring, bearing, gasket set 205613M-311 Summit Racing 182.39
F-M cam bearings 1404M Summit Racing 22.95
F-M oil pump 224-4154 Summit Racing 27.95
F-M oil-pump pickup 224-43620 Summit Racing 10.39
F-M oil-pump shaft 224-6154A Summit Racing 7.99
ARP head bolts 135-3703 Summit Racing 93.39
ARP intake bolts 135-2001 Summit Racing 17.95
Pioneer brass freeze plugs 830002 Summit Racing 13.95
Edelbrock Victor Jr. 2902 Summit Racing 217.88
Demon 850-cfm carb 5563010GC Jeg's 549.99
Distributor, HEI used Swap meet 25.00
Plug wires, PerTronix 8mm 8042VW Summit Racing 31.69
Spark plugs, Bosch FR8DP Summit Racing 31.92
ACDelco water pump 252608 Rock Auto 37.79
ACDelco starter 3361870 Rock Auto 50.79
Thermostat 13187 Rock Auto 5.73
TD valve covers 9235 Summit Racing 47.50
TD breathers 4870 Summit Racing 6.78 x 2
TD thermostat housing 9229 Summit Racing 9.95
TD crank pulley, aluminum 8876 Summit Racing 38.88
TD water-pump pulley 8874 Summit Racing 44.88
Block paint, VHT SP-123 Summit Racing 7.88
Hedman headers, 131/44-inch 68197 Summit Racing 231.69
Fel-Pro header gaskets 1412 Summit Racing 16.95
Subtotal     $5,851.94
Machine Work
Grind crank     135.00
Resize rods     124.00
Align-hone mains     164.00
Deck block with fixture     150.00
Fly-cut pistons     160.00
Torque-plate-hone     135.00
Subtotal     $868.00
GRAND TOTAL     $6,719.94
  • More Horsepower For Less Open Plenum Carb Spacer
    We also tried a simple, polymer, open-plenum carb spacer that ended up being worth 6 hp at the peak. This worked to improve the plenum volume and also created more room between the bottom of the carburetor and the floor of the manifold to allow the air and fuel to turn the corner into the ports.
    More Horsepower For Less Open Plenum Carb Spacer
    We also tried a simple, polymer, open-plenum carb spacer that ended up being worth 6 hp at
  • More Horsepower For Less Lash Cap On Valve Stem
    Note the lash cap in place on the valve-stem tip (arrow 1) and the additional clearance created between the rocker arm and the retainer (arrow 2). Before using the lash caps, we had less than 0.014 inch of clearance between the rocker and the retainer.
    More Horsepower For Less Lash Cap On Valve Stem
    Note the lash cap in place on the valve-stem tip (arrow 1) and the additional clearance cr
  • More Horsepower For Less Afr 305 Head
    We tested our AFR 305 head on JGM's SuperFlow 600 flow bench. Even if our numbers were not as good as the numbers advertised by AFR, the motor still made excellent power.
    More Horsepower For Less Afr 305 Head
    We tested our AFR 305 head on JGM's SuperFlow 600 flow bench. Even if our numbers were not
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