Polar Bear

iTrader: (4)

Im building a 95 s10 with LT1/T56. I am on the fence whether to go all out with a forged bottom end like in my Trans Am and do the entire sumped tank/ A1000, AN etc. I have a rear mount TC76 turbo I'm putting on it with 66 lb/hr injectors. I was wondering how much hp the stock LT1 bottom end will take? It's a stock crank turned .010, stock pistons and rods, 2 bolt main. I won't be revving it over 6k with the custom LE turbo cam. I'm wondering whether the stock bottom end or the 255 lph Walbro in tank pump with 3/8" fuel line will be the limiting factor. If I can hit 500 at the wheels with ported heads, cam, headers and turbo I'll be happy and not push it anymore. But, if the fuel system or bottom end limits it before that I'll have to put out the cash and do it while I've got the truck apart. Any help is greatly appreciated. And please don't just simply say forged internals and bigger fuel system can't hurt so I may as well do it, bc money is tight and if I go with more fuel and/or forged internals I know I'll get HP hungry and crank the boost way up and hurt the motor for sure.

Lonnies Performance

iTrader: (16)

The factory pistons will likely break before you run out of fuel pump.
They are rather weak & 8# boost is enough to hurt them.

a 255lph pump will get you to approx 550rwhp. 3/8" lines will easily handle that.

blue00ZZleeper

iTrader: (5)

As lonnies said the 3/8ths line will support more then you'll be making. I'm still running 3/8ths supply with a 5/16's return for my setup and its still doing ok. The bottom end wont last long if you turn the boost up.

Polar Bear

iTrader: (4)

I guess I'm gonna break down and buy a forged rotating assembly. Anyone have any experience with the new Aeromotive 340 lph in tank pump to know what kind of power it will support?

Lonnies Performance

iTrader: (16)

If you are looking for a fuel system, give me a call.

I can get you the correct setup for your vehicle.