OK. I am lookin for your guesses. What do you think this setup would make at the tires:

- 4.8liter (8 to 1 compression and stuffed with forged parts)
- LS-1 heads (heavily ported and polished)
- Turbo cam (not sure what size)
- STS GT67 kit (13#-15# boost)
- FMIC
- Upgraded fuel system
- and a very good tune usin edit

All guesses are appeciated.
thanks

 

I think you'll give Briggs & Stratton a run for their money












j/k I have no idea, but, best of luck to ya!

 

A 4.8 w/ forged internals and it's still a 4.8?

 

OMG that was funny p.s you might look at parish's last post it will be very similar to that

 

Yup. took some time ot find the parts but it still 293ci.

 

I would guess around 415 to 435 RWH maybe a little more with that much boost

 

i was thinking a bit higher. I made 435rwh with the stock lowerend, more restrictive heads, a radix at 10 lbs and a slipping trans. I would think that the turbo a built 4.8 would make more. but i guess we will see/

 

I like to guess conservatively unlike others, but that is just what it was a guess. I am making a fraction under 340 hp with my LS1 naturaly asp. and would like some sort of forced air but I am still just scoping things out.

 

I would think with a good cam and tune, you should be able to get 480+.

 

I was also wondering if any of you guys though that it would go 11's with the set up listed above plus: 4:11 gears, 3000 stall, built 4l60e and 28 x 11.5 mt et streets.