[DatBrotato]

Soon i'll be getting this cam put in along with having the heads ported & polished, afm deleted, new springs, lifters, rocker arms, etc.

Within a year I plan on wiring up a 75 shot with a plate. My question is how will this cam behave with spray and has anyone run this combo?

Cam Specs: 235/239, .645"/.635", 116 LSA +32% fuel lobe.
I believe this comes out to +5 degrees of overlap, on stock lift(I think).

Will this extra overlap cause a problem, would I be far better off waiting for a custom grind nitrous cam, or just use spray and not touch the cam?

[62nalide]

For a 75 shot it's ok. IMO it's a little high on the exhaust side knowing these heads are not as good as the LS one. Custom one would be best. Working on one that's getting a 250 shot soon.

[DatBrotato]

Originally Posted by 62nalide

For a 75 shot it's ok. IMO it's a little high on the exhaust side knowing these heads are not as good as the LS one. Custom one would be best. Working on one that's getting a 250 shot soon.

I mean I say 75, but eventually that's gonna turn into 150
So I guess i'd have to go with a custom grind & better head studs.

Which brings me to my 2nd question. With a cam, P&P heads, & 75shot wouldn't that put me around 600whp, which is pushing the limit of the stock pistons, correct?

Is that 250shot gonna be on a stock SB?

[DFW1LE]

Originally Posted by DatBrotato

I mean I say 75, but eventually that's gonna turn into 150
So I guess i'd have to go with a custom grind & better head studs.

Which brings me to my 2nd question. With a cam, P&P heads, & 75shot wouldn't that put me around 600whp, which is pushing the limit of the stock pistons, correct?

Is that 250shot gonna be on a stock SB?

There are NA H/C/I without power adder that are already in the 600 whp range. That said, I do not know if the N2O would cause a piston issue in getting to 600 if you were at 525 without it.

[DatBrotato]

Originally Posted by DFW1LE

There are NA H/C/I without power adder that are already in the 600 whp range. That said, I do not know if the N2O would cause a piston issue in getting to 600 if you were at 525 without it.

Jesus 600whp with just H/C/I on a LT1? Maybe they were just on some really happy dynos
Links to the H/C combos or builds?

[USAFS197]

Pray has gotten incredibly close on H/C/I A8 cars. I suspect that if a M6 guy did the same exact stuff, he'd eclipse 600whp. I would think on a more aggressive cam setup, a lighter weight flywheel, E85, etc., on an M6, combined with a solid H/C/I setup, you'd be able to get past 600 without much of an issue.

[danhr]

Originally Posted by DatBrotato

Jesus 600whp with just H/C/I on a LT1? Maybe they were just on some really happy dynos
Links to the H/C combos or builds?

https://www.camaro6.com/forums/showthread.php?t=530551

582/518 but through an A8.

obviously would be over 600 in a m6

[ULTRAZLS1]

They say the heads are worse but I’ve never seen a ported stock head and cam SBE ls3 make 600 rwhp with pump E85. It seems like the lt1 is out powering the ls3 quite handily across the board when na apples to apples. And the lt1 is just a baby compared to the ls3. Will probably be hitting 650 when it’s as old as the ls3 and a lot more head and cam options are around

[62nalide]

Only set back on the LS3s are port injection vs the LT1 Direct injection. If there are better heads for the LTs I think they will be even more great. LT heads are poor quality and core shifts are worst we have seen. Lt4 castings are a little better. I'l post some pics to why we think a better design would make more power.

[62nalide]

LT1 vs LS3 valve locations were flipped

[62nalide]

[62nalide]

[62nalide]

[62nalide]

LS heads flow more and better design overall