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Original Message
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| RE: modified a 390 |
| By Lucas - 05/14/2004 7:55:26 PM; IP 12.146.226.121 |
Gerry is right. Forget the attempt to build a 428 from a 390 block. The shorter stroke of the 390 will allow higher rpm, but less torque than the longer stroke 428. Here's what works for me in my Cobra replica (2600#,
4 speed toploader, 3.50 rear) 390 block, magnafluxed and pressure tested. Bored .040 over, 390 cast crank, cleaned up,
chamfered and polished, stock 390 rods magnafluxed, balanced and resized, with ARP bolts, 9.8:1 pistons, Reed hydraulic camshaft
with .568" lift, Edelbrock Performer RPM Heads, Comp cams roller rockers ,Edelbrock Performer RPM intake with 850 Holley carb. and KN filter. Makes about 430 HP on 93 octane unleaded. |
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