Building a Motor
Thread Starter
Joined: Mar 2006
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From: The Beach...
Building a Motor Thinking of building this setup: 4.000 bore(stock), with 3.75 Crank, which is a 377. Anyone have had this built, or know anyone, and how good did it run?
Not unless you have a bad block core. Some of the LT blocks I see need to go .040" just to get the bores in the right spot. You can always go .020" over, I do that in FI builds all the time.
Bret
Bret
There will be some bore wear and the longer stroke would push the rings past that, that alone would scare the hell out of me. Besides after the cost of the clearancing and balancing, hottanking and new bearings the bore and hone is spare change. Bore does affect headflow too, IMO not enough to justify a bigger than necessary overbore but is another small positive.
If you look some head companies advertize flow numbers at different bore sizes and make sure to list the bore size because it does have some effect.
If you look some head companies advertize flow numbers at different bore sizes and make sure to list the bore size because it does have some effect.
