Will a Pontiac 455 crank fit in a 400 block w/o machine work?

[WindsorDlx440]

I know of a bad 400 Pontiac engine with a bad crank. If I got it, would a Pontiac 455 crank go in it w/o a lot of machine work?
Thanks!

[yellomalibu]

Without machine work, no. The 400 has a 3.00" main and the 421 and 455 have a 3.25" main.

There are stroker cranks available for reasonable prices that sort of negate machining an original crank down.

I googled "will a pontiac 455 crank fit in a 400?" and found this:

http://www.highperformancepontiac.com/tech/hppp_0805_stroker_kit_schooling/viewall.html

[WindsorDlx440]

Thanks, man! I appreciate the link, somehow missed that earlier. This has possibilities for the old 400 block......I think I'll investigate this deal further. Thanks again.

[Beagle]

Check out Butler Performance...

http://www.jbp-pontiac.com/products/crankshafts/forgedCranks.html

Price seems way reasonable for a forged crank. I doubt you can machine anything and get forged for this money.

[WindsorDlx440]

Thanks, man. Having a history with Mopars, Ponchos are new to me. Butler looks like a Pontiac candy store!! Thanks for the link.