Help finding some parts.

Can any1 help me where i can find pistons in a bore of .020 over for a pontiac 400 in a 72 gto... thanx guys

Try jeg's or Summit racing

72,
.020s are available in a casting, but not a forging (unless you order "customs"). The Sealed Power part number is: 400NP-020. The rings are E-299K-020 (for moly) or E-299X-020 (iron).
.020 over is not a "popular" oversize, as .030 and .060 are more the "norm". If the cast piston is adequate for your application (no nitrous, no blower, consistent fuel supply), go the .020 route.
You may need a shop with a hone equipped with "diamond stones" to go .020 accurately. Often, a boring machine will not "clean" a bore at .020, and will require .030.

Hey MrPbody thankx man.. Ill try the .020 over if all fails return and go .030 over.. thanx man and i actually wanna get a powerful cam, lifter, etc what do you all suggest for a size of cam?? i jsut got a holley 650 so i want street performance.

Heres a stupid ? but where can i find those part #'s that you have listed for me??

72GTO,
Any Federal Mogul (Sealed Power/Speed Pro) warehouse can either supply OR order them for you. If you can't locate such a warehouse, e-mail me. I can hook you up. Where are you located?

Jim
[email protected]

Okay i have found a place to order them. Now i need a new cam and lifters what size lift would you recommend?

Comp XE262H, Comp 3112 timning set, Comp 988-16 springs and appropriate retainers. Stock valve train pieces will work with this cam, but it's about as big as you dare go without upgrading the valve train. With that little carb, it will be quite responsive, and won't out-rev your stock bottom end.

alright thank you.. After im done rebuilding this engine i will be selling this car with 0 miles on the engine but the car is in need of restoration.. Ive got 2 new floor pans and a complete dual exhaust system waiting in the garage that will be included in the sale. If any1 intrested please email me @ [email protected] or call me 781-241-2255 Ask for Nick