Where can I get a decent price on a couple of GM pistions. They seem to be on national backorder and the cheapest I found them was over $120 bucks a piece.

Thanks

Buy a set of the J/E srp replacement pistons,they will fit a stock bore after honing with a tq plate (they are .004 bigger-4.470 vs 4.466),they weigh close enough to drop in without re-balancing and best of all they use regular rings,not the metric ones which will should cost you 89$ vs 200$ for the metrics. You will never have a oil consumption problem anymore either,Smitty

part # 139481-498$ in comp products catalog. You can sell your remaining ones on e-bay to people like you that just need a couple,you'll have a resh bore and cheaper rings that seal better,Smitty

Thats what I used!

There is a set of JE forged pistons for a 502 on E-Bay now up for bid, hope this helps.

Thanks guys Thats very helpful...

I just tore down 2 500EFI's....pistons look alright but bore them to 540's. I would think used 502 pistons would be pretty easy to come by.

ws,
Wiseco has them and they are available individually. I bought a single one a few months ago. The only thing you have to watch is the ring size, some of the early GM's had a strange ring size if I remember correctly. I had to buy two sets of rings to get the correct combo for one engine I did about a year ago. If you can't find the part number I have it at the shop and can give it to you Monday.

Bil Koustenis
Advanced Automtive Machine
Waldorf Md

If you need the metric GM rings you can get them individualy from GM