lifted99GMC

iTrader: (4)

I am having trouble finding a decent piston for a ls2 402, l92 head high compression setup. 4" or 4.005 " bore, 4" rod, needs to be either a flat top with -2cc reliefs, or a small (4-6 cc)dome with reliefs. I am tryin to stay away from a custom piston and like to go with an off the shelf. needs to be a good nitrous piston also. I am trying to get around 13 to 1 CR, without taking too much off the heads or block.
The best piston ive been able to find is a wiesco, -6cc dish with -2cc reliefs. I would have have the heads milled .060" and have the pistons out of the hole .005-.010" and id rather not do that if possible. thanks in advance for any info

Chad

bg-sdpc

iTrader: (4)

We have Manley -2cc flat tops in stock. They are made from 2618 material so they will work with spray. We also have the correct rings for NOS in stock. $699.95 for both shipped. The only problem is that you will not get to 13 to 1 with this setup. You will have to mill the heads to 62cc and use a .040" thick head gasket just to get 12.5 to 1.

lifted99GMC

iTrader: (4)

Brian, thanks for the reply.I will be calling you shortly.

Chad

1936FordPU

iTrader: (3)

Order the custom piston speced for the compression you want to run. Off the shelf pistons are just that. Off the shelf. I would not mill those heads to get the desired compression. They are stock castings afterall and appear to be thinner than previous castings. This will benefit you best if you plan to make a bunch of power on a stock casting style head. The surface area of clamping force is greater this way.