Quote:
Originally Posted by sparks
Is there any advantage or disadvatage between the 2? Mild builds(not wild)
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I have a 427 (actually 429 ci, 4.250 bore, 0.017" over) in my car, and it put 488 ft-lbs of torque at the rear wheels. A 477 ci in a similar car put 476 torque at the rear wheels. My friend who has a 482 hydraulic roller built by a respectable builder, on a different dyno, put 420 ft-lbs at the rear wheels. Yeah, for any given build, the extra cubes will give you more torque, but 427 ci will give enough as well.
If you get a used complete motor, you don't have to buy another crank. The engine will remain a "true" 427.
If you buy a stroker crank, 3.98, 4.25, etc. you get more cubes, but also you get BBC rod journals, that are slightly wider and shorter, which is better. You will also get more torque, although top end HP will be closer to the same.
No matter which way you go, you'll be fine, assuming you put it together correctly.