a boosted ls1 with stock crank and forged rods and pistons or a n/a 402

 

My vote goes for the ls1, when you said N/A did you also mean no nitrous?

 

yeah no nitros no boost no nothing for awhile and no headers nothing all i could do would be use ls1 heads and the cam in my sig and the forged 402 bottom end. but the ls1 if i forged the rods and pistons for a little over a grand then i would have the cash to put the turbo in and a stall and some rims and tires.

 

A forged ls1 can make crazy power with a turbo.

 

really, thats what i like to hear. what will the stock crank hold?? i've been looking and i only found one thread and the say about 7-900 but i wanted more info. the only thing forged would be rods and pistons the crank would be stock.

 

turbo will make more power. Plus that cam is too small for a 402 imo.

Think of it this way -- for each atmosphere of boost you add, you add the n/a cubes to the total... So at 14.7psi, you add the equivalent of another 346 cubes to the 5.7 (so 692ci). That's gonna make a lot more power than the extra 56 cubes n/a -- especially with such a small cam.

 

The stock crank can handle all the power you want.

 

sweet turbo it is then. should i use the ls1 block or bore the 4.8 out to 3.905 for ls1 pistons?

 

I think the aluminum ls1 block would be what you want.

 

Im sure you will be happy with the alum. block LS1 and stock crank. Im going to run atleast 15 psi on my motor.