SPANKY LS1

iTrader: (24)

Does anyone have a PDF or similar of Diamond piston specs? Looking for some pistons for a 408 (4.030 x 4.000), and their website seems to be down. Who else makes LSx pistons? JE, Ross, Diamond, who else? Thanks, Shawn

Scalpel

iTrader: (4)

Mahle and Wiesco are great pistons, too.

11 Bravo

iTrader: (3)

You may want to consider the JE pistons. With your 4.000 crank the #8 piston will have to be clearanced. JE's will clear the reluctor wheel no problem, but if you get Diamonds then you will have to grind down one piston yourself. I may sell my Diamonds and get JE's just so I don't have to mess with it.

y2khawk

iTrader: (5)

JE's here

Anyone will make you a piston for an LS1, just gotta ask and pay

Chris@AP-Engineering

iTrader: (-2)

JE's will clear but the forging they use is not that well suited for a power adder. Keep that in mind when buying. The Diamonds with the clearance in them can take a lot of abuse. Both company's make great pistons.

Thanks

11sHSV

Diamonds does make pistons with the reluctor relief already in place.

C4VetteLS1

In my 4.030 x 4" 408, i had diamond do thiers with lowered ring stack, tool steel wristpins and triple thick deck.... If the tune is right they see a 400 shot being no big deal which i cant wait to get to spraying...

Jason99T/A

iTrader: (21)

I have used both pistons in 408ci buildups. Both are very good options. I have used quite a bit more Diamonds though as their customer service is hard to beat and it is a piston we keep in stock.

Jason

11 Bravo

iTrader: (3)

Yes, I read that on the internet as well. But my 4.125 LS1 Diamond pistons do not have a relief in place. Kinda PO'd about that.