I been posting allot of threads about prochargers and force induction but I had one more question about my set-up. I wanted to get a procharger that can put out 12 pounds of boost that I plan to run on my built 355 or lt1 with forged pistons. I plan to keep the stock heads,crank and keep the hot cam in for right now. I wanted to know if I only ran 8 psi of boost this summer only could I get away with not upgrading the rearend and fuel pump. When I run 12 psi I plan to upgrade to a 12 bolt and fuel pump. Running only 8psi for right now. My stock 10 bolt should be okay with street tires. Also my fuel system should be okay with that fuel system correct. Or must I upgrade the fuel pump with 8psi. I'm only shooting for 400rwhp this summer and 550rwhp next summer. Let me know

 

You got to run a fuel pump. You can get away with the rear as long as you run street tires. Your car is a stick right? Auto are a little easier on the rear. I'm still running the factory rear, but its on borrowed time!

 

Check your email.

 

I am new to this board, but post some on ls1tech.com. I am also not that familiar with the capabilities of the stock LT1 components or exactly what you already have, so you can take this for what it is worth. But, since you plan to go 12 psi eventually and you will need to get the car tuned after adding the s/c anyway, I would upgrade the fuel system, including the injectors, to handle the 12 psi, and get a conservative tune if you want the 10 bolt to live. There are guys breaking them with stock motors and stickies. Running 8 psi, you could still run lean if you don't upgrade the fuel system. Then, when you are ready to go to 12 psi, you will only need to add the 12 bolt (and probably a clutch), change pulleys, retune, and start buying tires. Once you go to 12 psi you will want to upgrade your suspension components to get more of the power to the wheels, or else it will just be a fry-fest.

Good luck,
Tom

 

The fuel system is not the place to skimp on.

 

You can get away on the stock rear, but DO NOT cheap out on the fuel system in a blown motor. A 255 is what, $200 tops? Why wouldn't you just drop in a new pump? Changing the pump isn't that hard. I pulled my tank and had it reinstalled in about 2 hours, without dropping the rear end.