04-07-2007, 08:07 PM
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CC Member
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Join Date: Apr 1999
Location: cleveland,
OH
Cobra Make, Engine: CSX4000, 427
Posts: 1,999
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Not Ranked
Quote:
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Originally Posted by lineslinger
The use of a 428 crank in a 427 block is a common practice.
As to which crank is best is usually determined by what you are trying to accomplish with your engine, high torque, high RPM's, etc.
At some point I may change out and use my steel 427 crank, but for now I am in pursuit of a torque monster, thus the 428.
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In the past, I would have thought that using a stock stroke 3.78 crank would be giving up decent torque, but after I had my stock stroke 427 ( 4.250 bore - 429 ci) chassis dyno'd, it still was a torque monster. Peak RWTQ 488 @ 3850 rpm's (about 600 flywheel), and maintains above 450 ftlbs from 3500 - 5000 rpm's (about 560ftlbs at flywheel).
It just shows that you can build decent torque with a stock stroke.
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"After jumping into an early lead, Miles pitted for no reason. He let the entire field go by before re-entering the race. The crowd was jumping up and down as he stunned the Chevrolet drivers by easily passing the entire field to finish second behind MacDonald's other team Cobra. The Corvette people were completely demoralized."
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