Bmoskal

Hey, going to pump up my 350 in my 72 CS, its been recently rebuilt a few years ago. I'm looking to put a cam,lifters and get the #7 heads worked for more power. I was thinking a xe262 cam with comp lifters. How much power would this setup make?

olds 307 and 403

What pistons were used?

Bmoskal

I'm not sure last owner did the work, provided photos of motor torn apart. I would assume just cheaper pistons. The car runs and drives smooth just the gearhead in me wants more power/better performance.

Fun71

Those pictures may help identify the pistons, at least help with large dish/small dish/flat top.
If they are large dish, the very low compression ratio means you can't go much larger on the cam specs without overcamming the engine and actually decreasing performance..

olds 307 and 403

If it is the big dish pistons, as said, you need to stay very small on the cam. Cutlassefi does custom cams just for those type of builds. A set of his Mahle forged 10cc dish pistons with an ultra modern 1mm ring pack is the best way to go if you want an even bigger boost in performance. Also headers, 2.25" or 2.5" dual exhaust, a 2000+ stall and 3.08 and up gearing also boost performance.

Bmoskal

I already have headers by hooker, and a 3.08 rear end but its open. I'm going to see if I can put a borescope down one of the cyclinders and see if I can make out what kind of pistons are in it. My buddy has a nice snap on brand one that I think would do the job.

olds 307 and 403

An open rear will seem more powerful with the one wheel peel. Trust me the stock 1800 stall if your lucky blows. Even stock or with Cutlassefi's tight LSA cams, launching at 2000+ launches the car much quicker. Jeggs has an affordable 2300 stall converter that has good reviews for a little over $100.