Visit The Dirt Forum for More Information

Author Topic:   What to turn
posted July 20, 2004 11:56 PM
I just claimed a motor that has a 283 block 400 crank with stock 993 heads dont know what for a cam but would this kind of motor take alot of rpms or would it be a lugger

posted July 21, 2004 03:53 AM
You mean they stuffed a 400 crank into a 283 block? That would be a lugger I would think.
If its a 283 crank in a 400 block that would be a little screamer.
Jason Boivin

[This message has been edited by jay116 (edited July 21, 2004).]

posted July 21, 2004 09:28 AM
Wouldn't that work out to like 353-355 CID depending on overbore?

With a long stroke, small bore it'd be a torque monster. Compared to a basic 350, I'd think it would want about 300 rpm or so less with everything else being the same.

posted July 23, 2004 08:50 AM
I have a freind that runs a motor simular to that. They say its a 348, and they run it in a late model. They claim to be under powered compaired to others, they have been keeping up, but not running up front all the time.

I know they spin that thing to the moon, just like any other "big" motor

posted July 23, 2004 09:06 AM
wouldnt that work on the same pricnipal as a 383 i know that that not as many cubic inches but would it be the same thing

Plus what would they have to use for rods and pistons?

posted July 23, 2004 11:51 AM
What type of claimer class was this motor run in? I don't know why someone would do the 283 block with 400 crank, you'd grind the mains way down to make it fit. If it is a 400 crank in a 283 block, it would RPM like a 383...just be sure it's got decent rods. It's basically a small version of a 383 with a much smaller bore. Back in the days, some guys took the 283 blocks to 4.0" bore, maybe that's what was done?

Back to the Archives