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Old 05-30-2007, 06:20 PM
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Oil Pan for 377/383 small Chevy V-8 stroker?

I've seen 3.75" cranks with small journals, and many 2-piece oil-seal pans are available for those. What about pans for late model 1-piece 350 blocks using a 1-piece-seal crank that have been clearanced? Can a stock 350 pan still work or is a bigger/clearanced pan necessary?

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Old 06-01-2007, 02:00 PM
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When you go from a 350 crankshaft ( 3.48 stroke ) to a 400 crankshaft ( 3.75 stroke ) the stroke goes up only .270 thousands. The stroke is up/down so the rod is only .135 further down towards the pan with a 400 crankshaft ( over a 350 crankshaft )

That is barely over 1/8th of a inch
I have never had to get another oil pan on the 383 strokers I have put together but I have also never built a one piece seal 383 ...

I try to use the 1990 Corvette oil pan ( 6 quart ) on all my one piece seal SBC's anyway ... The sump is not deeper ... it's just that the sump is longer and holds more oil.
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