got a question..should use search..but this one is different

[99Ls1fever]

but aren't those stage III heads that you have meant for bigger engines? Like 383, 402, 408?
At least that's what I was reading.. and that stage II or 2.5 or good for the ls1's?

I run the stage 3's on my 408 and ran them on my previous 383 but Texas Speed Performance said they would give me way to much air flow for stock cubes unless I ran a way radical camshaft...

[M-Ten]

Yeah that's what my understanding was also.. I'm thinking maybe some Patriot Stage II's?

[99Ls1fever]

depending on which ones you get it can boost the hell out of your compression

[chieftransam]

I got stage II and I'm around 11:1 (I think)

[99Ls1fever]

I got stage II and I'm around 11:1 (I think)

thats good stuff man higher compression the more power...!

[blackhawk01]

lol..ill have to run a Stage II...that should set me at a pretty good HP rating right?

[99Ls1fever]

yea you should gain 30 to 35 hp depending on camshaft...

[SSwt00SS]

LS6 all the way, way better flow and doesnt screw your compression like the 5.3 does. I have the stage three's and i will never look back at the 5.3's again.

I also went with a bigger cam but my increase was 35 rwhp with the Patriots and then when I built my other engine that is a 408 i went with the patriot heads stage 3 for the lq9 heads and that was 50 rwhp gain so i have always had good luck with Patriot Heads

you need to state that the reason you are using Stage III heads are because you are a stoked out larger than 346 displacement. by not you almost come off as telling him to look into/order Stage III heads for a stock cubed Ls1 which would hurt him since he doesnt have the displacement you do...

[SSwt00SS]

to the OP, you need to look into Stage II Ls6 heads (59cc) to bump up your C/R...get 2.02"int/1.57"ext...

im running the Stage II Ls6 "Style" heads (59cc) - 2.02/1.57", Comp 224, FAST 90, LT's/TD's and im putting down 437/404...(not retuned for the TD's)...

this is without an U/D Pulley, EWP, and im still running stock injectors. prior to swapping out exhaust systems (from SLP LM cat-back to TSP TD's), my old numbers were 444/395...

the patriots heads i saw gains of 33+rwhp and 22+rwtq after they went on...

[blackhawk01]

to the OP, you need to look into Stage II Ls6 heads (59cc) to bump up your C/R...get 2.02"int/1.57"ext...

im running the Stage II Ls6 "Style" heads (59cc) - 2.02/1.57", Comp 224, FAST 90, LT's/TD's and im putting down 437/404...(not retuned for the TD's)...

this is without an U/D Pulley, EWP, and im still running stock injectors. prior to swapping out exhaust systems (from SLP LM cat-back to TSP TD's), my old numbers were 444/395...

the patriots heads i saw gains of 33+rwhp and 22+rwtq after they went on...

thankyou for the info man...yah I was about to go with the Stage III heads until i saw that he had a 408..that threw me off lol..thankyou though

[blackhawk01]

so if I go with the StageII's should I still get a 225 intake runner and a 2.08 valve size?

[MYHAWKROCKS]

If your going to keep your car N/A you should go with the 5.3 to bump up the compression. If your also going to run a healthy cam you benifit from the increased compression, a friend might is running a MS4 and 5.3 heads with bigger valves that flow the same as the LS6 ported, making 437 rwhp...check out www.texas-speed.com ....they can help you out

[99Ls1fever]

so if I go with the StageII's should I still get a 225 intake runner and a 2.08 valve size?

I would call whoever you are buying the heads from and tell them this is what camshaft I have and this is what internal mods i have and this is my setup and will 225cc heads flow to much air to my engine or will i be fine? because that is alot more flow than the stock LS1 heads....

[99Ls1fever]

thankyou for the info man...yah I was about to go with the Stage III heads until i saw that he had a 408..that threw me off lol..thankyou though

yea the 408 breaths a little different...

[99Ls1fever]

to the OP, you need to look into Stage II Ls6 heads (59cc) to bump up your C/R...get 2.02"int/1.57"ext...

im running the Stage II Ls6 "Style" heads (59cc) - 2.02/1.57", Comp 224, FAST 90, LT's/TD's and im putting down 437/404...(not retuned for the TD's)...

this is without an U/D Pulley, EWP, and im still running stock injectors. prior to swapping out exhaust systems (from SLP LM cat-back to TSP TD's), my old numbers were 444/395...

the patriots heads i saw gains of 33+rwhp and 22+rwtq after they went on...

those are good numbers man, I have a question on your under drive pulley... How much hp did that free? who makes the one you have? up and how do you like it?

[SSwt00SS]

those are good numbers man, I have a question on your under drive pulley... How much hp did that free? who makes the one you have? up and how do you like it?

i dont have an U/D pulley on the car. you accidentally misread what i wrote...

[M-Ten]

what is ewp?

[SSwt00SS]

what is ewp?

Electric Water Pump...

[M-Ten]

oh ok thx

[99Ls1fever]

i dont have an U/D pulley on the car. you accidentally misread what i wrote...

o man, my bad....