Running 8.5:1 Wiseco pistons.

Anyone?

 

Depends on the charger and what kind of tuning you're capable of. I've seen a turbo single cam that made 300hp using LS rods. My stock LS took 9psi for a long while from a T3. It's in the tuning.

 

I was running 14psi on the stock bottom end. But an accidental boost spike ended the piston lands.

Before she blew I was pushing 272 whp with 11.8:1 a/f ratio.

 

Will you be boaring and sleeving(sp?) the block, and/or installing a block guard?

 

Here's the buildup:

-wiseco 8.5:1 pistons (ultra-lite race version) .20 over
-Mr. Gasket head, intake manifold and exhaust manifold gaskets
-ARP head studs

The block has been cleaned, decked and bored .20 over. I had all the bearings replaced, the oil pump rebuilt, timing belt and water pump replaced and had the crank cleaned and rebalanced.

My car runs the following setup:

drag gen 3 turbo, deltagate, rc 310cc injectors, walbro 255lph fuel pump. my car is currently set at 14psi.

 

Do you remember how much of a boost spike occured before you blew a piston?
How long were you boosting at 14psi?

 

around 25psi

I ran the 14psi for a few weeks with no problems. Not even a hint of blowby.

 

Ive heard as much as 350whp.. but there are always freak motors and freak set ups.. just curious, why did u go with 8.5:1 pistons? are u planning on running high boost on pump gas?

 

I wouldn't even chance it with the stock rods. You're almost 90% built...why not just wait and get some GE rods or something? With that much money invested already, I would definitely wait for some rods.

 

Hate to say it, but I think he's right. That's why I ended up doing it all at one time. I figured do it right the first time...so there is no next time.

Good luck with the build. Who's doing it?