Im looking for some pistons

4.030 bore
for 6.125 rod, 4.100 stroke and around -2.8 to -4cc

was looking in to the wiseco but they dont seem to make those. Looking to be around 11.2 to 11.5 compression

does anyone know where I can get them?

 

I looked at a couple vendors and didn't find anything, I think you might be looking at custom pistons man

Diamond PN# 11572 is the closest thing I could find. 4.030 bore, -2cc, 6.125 rods, but for a 4.000 stroke. You'd have way too much compression height with that guy on a 4.100.

 

Yeah man sucks. I just bought this crank and cant seem to find pistons. I know its duable since there are people here with 418's. The other closest I got was same specs but with a -10cc and compression would be in the mid 10's

 

who'd you buy the crank from? maybe ask them if they have any off the shelf pistons geared for what you're trying to do. if they don't maybe they know someone who does.

 

From manley. I checked their site and nothing.

 

What block are you using? I think the 418s come from using the 4.1" stroke crank with the gen4 aluminum blocks since the cylinder is longer than the gen3 blocks and with a shorter rod to use off the shelf pistons.

 

Im using the gen 3 6 liter iron

 

I would look into a 4" crank then...be a lot easier, and even if you had to sell the crank at a loss you would probably make it up in being able to buy off the shelf pistons instead of customs. Not to mention they would be stronger with the bigger ring land than you would otherwise have.

 

Damn sucks. Or I can get another block lol. But the guy told me I could return and exchange. Hopefully the offer stands

 

What head are you running? Getting to 11.1+ is also depending on your head and gasket.

 

Running the ls3 heads from GMPP. 68.5 chamber I believe