need caddy engine infi;429-500

My '41 caddy has what is supposed to be a '64 caddy 429,it's tired and can get a deal on a 500 What interchanges in the 429,472,500,425 family and how can I tell the long blocks apart? Do exhaust manifolds exchange? there isn't much out there in interchange information.

 

I don't think much of anything interchanges, the 472/500/425 are a different generation of engine entirely. They are as similar as a 396 and a 409 Chevy.

 

This engine has a HEI from a 472 and a TH400 that I had recently rebuilt,the core was from an Olds. Maybe it isn't a 429...........can't find casting #'s,all ground of when the block was smoothed...Olds tran is/was same case as the original.......anyone else know them?

 

Any late buick olds or pontiac uses the same trans pattern as a Caddy. I don't know if the 429 has what is called the B.O.P.C. pattern but I think it does

 

Nothing interchanges between 429 and 472/500 engines


Posted using the Full Custom H.A.M.B. App!

 

Based on this info,I must have 425,472 or 500. How can I deteremine which one I have? All the casting #'s were ground off to smooth it before painting?

 

http://www.cad500parts.com/

 

http://www.500cid.com/

 

Distributor in the front or rear is the first clue. Front would be 425, 472 or 500.

The stock right side manifold on a 425 usually has a flat spot on the front exhaust port that cuts off a fair amount of flow from that cylinder compared to the others. It was to clear the a frame on the chassis.

 

...a few decent pictures would be helpful...

.