Jimmy P

iTrader: (177)

My buddy wants to swap the pistons and rod bolts on his 2001 SS. It has about 60,000 miles on it, and doesn't want to put valve reliefs in the stock pistons. He is considering the JE pistons. I looked at some sponsors websites who have them, and I didn't find them in a 3.900 bore. Most start at 3.905. Anyone know were one could find them for the stock bore size? thanks

1slowls1

iTrader: (1)

Would these work??

Mahle Motorsport Forged 346 cid LS1 Dished Piston

Mahle Motorsport Forged 346 cid LS1 Dished Piston Set: 3.898" Bore, 3.622" Stroke, 6.125" Rod Length, .927" Wrist Pins, 1.340" CH, -9cc Dish; Wrist Pins and Piston Rings Included.

slow trap

iTrader: (22)

does your friend plan on going fi in the near future ?his cr will drop down to low 9s or so with those dishes.

mr2guru

iTrader: (16)

Those are for aftermarket rods. He'd need some set up for 6.098 rods if he's reusing the stockers. Also why the big dish? If he needs reliefs, he is probably running a big cam? Which means (usually) not boosted. Big cam likes big compression. -2cc is enough and covers the reliefs. No reason to go more.

Moparnos (The SLP Guy)

iTrader: (55)

lowest i seen in mahle is -4 cc but i'm sure you can get -2. i take it he doesn't want to machine the block.

ThunderStruk

iTrader: (1)

I know Mahle makes an aftermarket piston for a stock rod and stock bore size.

PREDATOR-Z

You simply do not remove and change pistons without honing the block.
How can anyone miss this issue
Tell your friend he either rebuilds the block or he flycuts.

'02 SLP#686

iTrader: (1)

Just get the 3.905"s and get the block machined for the pistons. I am running the JE's with a -2cc relief.

Jimmy P

iTrader: (177)

Thanks for the responses. So he can't order new pistons and just throw them on? Hes an old school guy, worked on SBC's all his life, and is prety sure that he can just do this. Why is it important to get it honed? thanks

Robinator

iTrader: (1)

you hone it so when you put the new piston rings in there(which I hope hes doing) they break in their own wear pattern. Otherwise, you could end up with some leaky piston rings and blow oil everywhere. Youve heard this plenty of times, "If your gonna do it, do it right."

BTW...even on old school motors, you should hone the cylinder before putting new pistons and rings in. That goes for just about every motor out there.

cyphur

iTrader: (10)

Hone the block, get 3.905 pistons and rings. End of problem.