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Old 05-16-2011, 10:17 AM   #6
Squeernemergo

Join Date
Nov 2005
Posts
493
Senior Member
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Main problem is valve springs - NASCAR engines were getting very close to 10k for 500 mile races!
Don't know what they're currently running in drag engines, but 25 years ago they were using 9k rpm for even the big engines - 8+ litres!

Fruity, if you do build a new short block, have you thought about basing it on the 400 block and crank?
Very expensive. They do make stroker kits to bring the LT1 to 383, but I'd likely leave the bore alone and go with just the larger crank to make a 378. But still, since i don't want this project to wait another 2 years for me to build that kind of cash I'll live with the smaller displacement.
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