ss1le02

iTrader: (4)

I'm rebuilding my LS1. I sprayed a 100 shot dry on the stock lower end. I now have a problem with a knock in the upper shortblock. My very experienced speedshop guy said that I blew a ring from detonation. My modifications are a comp cam 224/.581/112lsa, headers, lid, and SSRA. On their dyno I was putting down 394rwhp before the addition of NOS. My speedshop guy said that the injectors couldn't handle the extra 100 shot on top of the 394rwhp that I already had.

So my question is what's a good forged piston? I'm trying to save some money that's why I'm not going with the works, ie. forged crank and rods. I know a guy that's selling Ross forged pistons and rings in different configurations for $625. Are these good pistons and is this a good price. I was planning on just getting stock dimension replacement forged pistons. Do a hone job, check the bearings. This speedshop will do the work for me for about a $1000. I'm trying to stay under $2000 to get the shortblock redone.

Can I get domed pistons instead to raise the compression? Will a domed piston work with my cam. What kind of power increase would I get. Previously I had 394rwhp.

I need someone to list a good piston with the part number for stock and domed in their favorite brand.

Any help is much appreciated.

P.S. I've got Bosch 36lb injectors on the way.
P.S.S. I tried getting the dealership to fix the motor under warranty. I put it back to stock except for the headers but they wouldn't do it. In fact they voided my powertrain warranty.

Sorry so long.

Reckless

iTrader: (9)

You answered most of youe own questions. Ross and Diamond sell good pistons. There are better out there, but those two are the primary suppliers.

ss1le02

iTrader: (4)

Thanks for the reply. With my set up can I get a domed piston?

DenzSS

You don't want a domed piston. Most pistons will already be a few thousandths out of the deck.

If you want compression, stick with a flat top piston with valve reliefs. I think the Diamond reliefs are 6cc. Get your chambers welded and redone to the correct volume for your application if you want to do it right.

kossuth

iTrader: (12)

Good for them If you broke it you should pay to fix it.

antz01ta

iTrader: (3)

ss1le02

iTrader: (4)

Hey, it was worth a try.

Uthinkso

You can use a Diamond #11500, tihs will fit on your stock rods and requires a 3.905 bore. If you broke a ring you will want to hone the block for sure. I have a set of these ready to ship, $645 with rings. If you need them let me know.

Thanks