Quote:
Originally posted by pat mccarthy
yes i have done a 4.500 in the stock 427 truck block
the engine was for a customer and it was for a air boat the block need some work on the bottom of the block but not alot i use a 400 longer h beam rods and a srp pistons it was bored to 4.310 0.60 over the block was a new block before the one pices rear main seal blocks mark 5 and6 and had some clearance in the block from gm if you have and old block this may not be the same. i use a mildon pan and it worked out of the box .the heads were edelbrocks rpm the intake was a air gap the cam was a howards hyd roller 577/576 222/234 at0.50 i think and was 10 to 1 cr no dyno time on this engine it would have been nice but it did not happen .the customer is very happy and it was not built for hi rpm max rpm was6500 it dose most of its work at 2500 rpms any more questions on this tall deck build you can ask me. but a lot of this stuff is on old threads this may help you .would i build the same thing ?yes. how much rpms will it take ? this has a lot to do with cam the bottom ends are rock soild on big block chevys i do not know what you are putting this in but the add deck can be a pain and custom headers will be needed:whacked: