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Old 02-23-2006, 08:01 PM
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383 chevy small block stroker

I would like to know if there is any difference in performance on rod length in these 383 strokers. I built this motor about 15 years ago when this combination was still kind of new. I used the short 400 rod and have a 144 B&M forced induction blower for it. It has forged pistons with 034 GM angled plug heads with 2.02 valves giving me about 8.5 compression. Now I have been thinking about changing the rods to the 5.7 rod and using hypertechtic pistons with may be a 8.0 comp. Would this be a good change and really improve my performance with the longer rod? or should I just stay with the short rod and save me some money. It runs a 470 lift cam with about a 274 duration. It will be going into either a '70 monte carlo or a 1963 chevy II. Any body have inputs on that. Would really appreciate any help. thanks!

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Old 02-24-2006, 02:35 AM
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Changing from 5.565" rods to 5.7" rods, a change of 2.4% in length, will probably be unnoticeable in your engine and its application. I would keep the forged pistons with the blower motor.
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Old 02-24-2006, 05:38 AM
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Save your money, "if" there is any measurable difference it would be so slight you'd never feel it.
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Old 02-24-2006, 06:45 AM
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I wouldln't bother. Here is some straight talk concerning this over-blown issue.

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Old 02-24-2006, 09:36 AM
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I would stick with the shorter rods. Personally I like short rods, but it really doesn't mae a difference. Instead put the money into the ehads- heads can almost always use improvement.
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