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Originally Posted by 77 TRASHCAN
X2!
I've wondered about the water jackets in the IAII blocks. Having read about folks filling their O.E. Blocks to varying levels, then listening to all kinds of feedback as to how well their engines cooled after performing this modification.
I've even read once where someone fill a IAII block in an extreme HP engine.
I have read where a lot of the lower water jacket is wasted cooling space...
I know that the bulk of the heat generated comes from the upper area of the cylinder. Maybe the factory engineers got it right, for a reason?
I like the 1/4" pipe holes in SBC engines, they drain a lot faster...
Johnny, have you heard anything about a Pontiac event in Tulsa the his year?
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Have not heard anything about any Pontiac race in Tulsa. I am not a member of the club that used to put it on but I would think they aren't going to do it...
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1969 GTO, 3370 lbs, 10.5” tire...
07/31/21 Norwalk 9.42 @ 142 1/4, 5.95 @ 115 1/8th mile 3400 lbs...535 with Junk dinosaur Eheads
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