Borring and strocking a smb

[1SlowS10]

what bore and stroke do i need to turn a 350 into a 425 or 427 does any one know?

[duckaholic40sb]

well i have a 400 sb, 4.125 bore and 3.75 stroke, i have read that it is possible to bore a 350 to a 427 at probably the max, the cylinder walls get to thin and that causes problemswith heating, a 427 big block is 4.25 bore, and 3.76 stroke so what im thinkin is u in some way could get a piston to be that big, but it dosent always have to be a big bore then a stroke, you could get a big stroke and a semi big bore if you understand what im sayin. you should be able o get like 409 or so that i know of out of a 350 block , but your mains will have to be shaved out to accept a 400sb crank. but the main thing id be worried about is cooline ude have to get holes drilled in the head and the block, id me an amazing bitch i you could pull it off.

[PursuitS10]

You can offset grind a 400 crank,use small journal rods and come up with 421ci.

[Nitrojunkie]

you need an aftermarket block to go that big such as a motown

[mommasboy]

You can make it alot bigger than you might think my friends. I\'d have to get the issue from my buddy, but there was an article on how to make a 350 into a 454......THIS IS NO SHIT EITHER! I read it but i dont remember what all has to be done. I remember that the pistons had like a -28cc dish, the heads were somewhere around 110cc chambers and the stroke was outrageously huge. So just remember that anything can be done.