borisdookie7

planning on going high boost, i dont know much about domestics, i dont even know if you have to sleeve them, but if you do, what are some good links or places in cali where i can get it done or ship it to? anybody know how thick the cylinder walls are?

w8less

are you doing this to a stock block? if so dont waste them money. to properly sleeve it will cost at least 700

spend that money towards an aftermarket block such as the new boss block, a dart or man o war block and boost the hell out of it without fear of it splitting

borisdookie7

thats still cheaper than a new block though, i still need to spend money on valvetrain, rods, pistons, bearings, crank, etc.

wouldnt it be stronger if i just sleeved this?

w8less

no it would still have the same inherent weakness the main webbing of the block and small mains. improving the cylinders will not aid this.

borisdookie7

damn, have 5.0 blocks been known to fail often? i mean i want to go for 500-800whp, but if i have to then i guess i will get a new block

ACE

Go with a windsor, they will get you those numbers. be prepared to shell the money out to get those numbers also.

92Rideagain

500 hp is at the limit for a stock block, you will read and hear stories of stock making that and more. The key is to do it reliably which the stock block does not do. It has 2 bolt mains that can "walk" under hp conditions and split the block. A Dart or Boss block with thicker webbing and 4 bolt mains will hold up to the hp #'s that you are looking for.Don't forget that the internals will need to withstand the hp also. 500-800hp does not come cheap!!!

my77stang

400-425 flywheel HP on my 302 which was an early (stronger) block, and i snapped the crank in 10 pieces and destroyed the block......... you want an aftermarket 302 block or preferably a 351 platform to build off of. (as said already above)

borisdookie7

ooo alright thanks guys, idk about a 351, its not wider right? just taller deck height? are the cylinder walls thinner? whats some good places to get a 351 motor for cheap? can you swap 302s and 351 and they will hook up? like tranny, mounts, with no modifications? sorry for all the questions, and thanks again for all the help

borisdookie7

and theres a 351 windsor and and a 351 cleaveland, which is better? will they both fit w/o modications?