Another Dumba@@ question

[01SunsetWS6]

i should probally know this, will the ls6 heads fit on my ls1? i have the ls6 intake so i would think the heads would fit right? i was woundering because i was looking at the patriot kit from summit.

[SS4Matt]

yep, LS1 and LS6 heads are interchangable. the patriot heads are not that great though. i have them. with my thunder racing cam, i lost 5 hp when i put the heads on. the patriot valves are not that great. i replaced mine with Ferrea and that seemed to help some.

they're working pretty good with my new cam though!

[1BADAIR]

I have FFHP ported 2.055 1.60 patriot heads. They are not very good. Check out Livernois new stock valve ported heads. They seem to work very well and use the stock valves to keep velocity up. They had them on sale for less than a 1000 a while ago

[SS4Matt]

yeah i also have the 2.055 and 1.60's like Larry...definatly a loss in port velocity with them...that's what everyone tells me anyways.....

[Keego Ridah]

Yes they are compatible, why are you thinkin about buying me a set?

[01SunsetWS6]

ok cool the ls6 heads will fit, the kit comes with stage 2 heads the valve have a five angle valve job, the heads boost compression up to 11:1 and come with a matched to the heads cam, and coms with roller rockers. I would lose hp from my basicly stock 335 hp? the kit is like $1750 i havent seen a better deal? im open to sugestions though

[Keego Ridah]

What company are you getting the heads from?

[SS4Matt]

yeah that's basically the whole LS6 kit to make your car like the "405 hp" version of the C5 Zo6

[01SunsetWS6]

What company are you getting the heads from?

thinkin bout gettin the kit from Summit

Ok, so if i get the ported ls1 heads from livernoise and match a cam to those i can get mor power?
Im basicly looking to hit the 500 mark without spray

[SS4Matt]

it all depends on what cam you get..most cams work well with aftermarket or ported heads. although my thunder cam liked my stock heads better

oh and sean..he said they're Patriot Heads

[Keego Ridah]

hmm 500 hp maybe a lil tricky with no spray, get some ET heads or AFR, i hear great things about those all the time, but they will cost you some serious $$$

[zspot98]

Im basicly looking to hit the 500 mark without spray

100% sure you will not hit 500hp on a N/A stock 346 bottom end. I think you should be happy w/ somewhere around 420 IMO.

[SS4Matt]

yeah, no way are you going to make 500 with a stock cubed LS1. 450ish seems to be the most anyone gets out of head/cam LS1's....i've seen some people on LS1tech with some wild ass H/C setups hit 480...but that's like way up there.

if you want over 400 at the wheels, you're gonna need a decent sized cam and some good heads.

i put down 421 with my no so hot patriot heads and a nice sized cam from Sean@CARS. now my fuel system is maxed out and i need to get a big 'ol pump, injectors, rails and all that fancy stuff.

i agree with Zspot...with 420 at the wheels, you should be plenty happy for a while

[DETROITMUSCLE]

Yep like everyone else said 500 with stock cubes is near impossible. Those heads mated with a larger cam, like mine or Matts should get you great numbers though and be plenty for the street.

[shiftinda93z]

500 hp wanted??? Time to get blown! lol I'm pushin the procharger hard!

Good luck whichever route you decide. There are many many resources available online such as ls1tech to answer LOTS of questions. But we can handle a lot here too