Stay 429 or go 472/500?

[Landyacht]

Hello All,

Im in the beginning of restoring my 65 Coupe Deville and had some ?'s. I have a 429 all original. She's never been rebuilt or taken apart but is in serious need of being cleaned up and possibly rebuilt. my question is: I would like to squeeze some more power out of her and wanted to clean her up, would i be better off considering a 472 or 500 since parts are more readily available or should i work the 429? i.e. work the heads, stroking, bore? should i consider converting her from points?any ideas or advice is appreciated.

[CTS-Voodoo]

squeezing more power out of the 429 can be done but at what cost? I spent around 10 grand in parts and misc ish on mine to get 540/600 out of it. Honestly for the cost involved youd be better served getting a GM crate engine (like the carbed LS engine or something with a stouter cam) I think that makes about 500 horsepower and has great mileage. Plus it wont have exhaust leaks every 20 minutes like the stock manifolds do on that engine. I went through 4 sets of manifolds before having full custom headers built...

[1964CoupeDeville]

If you want more horsepower and wish to mod I recommend the 472 or 500 because, as a 1964 cadillac owner, I know there's nothing in the realm of performance parts for the 429 engine.