DavidNJ

Why wouldn't the Jesel's work with your other heads? Jesel lists J2k Mohawk and Sportsman rockers for the LS1/6 and Pro Series for the C5R.

SPANKY LS1

iTrader: (24)

I think hes saying that Jesels would work with his 215cc, 225cc, and 255cc heads, but are not required on them, unlike the 265cc and C5R heads, which require the use of Jesel rockers.

Another unrelated "issue" with these heads is, because of their altered valve angle (11* -vs- 15* stock), I'd bet they'll be illegal or a weight penalty added in LS1TECH series rules, and any other series that allows LS1s, as most other "altered valve angle heads" are.

That being said, it'll be interesting to see if they are good enough to over come a weight penalty, if they're legal at all.

Beast96Z

iTrader: (21)

That's correct. The valve placement in the 265's is offset on the intake. ET is having Jesel make Mohawk series lightened rockers espeacially for these heads.

Scoobie

iTrader: (8)

Thanks for clearing that up Cary. Have you guys test fitted any camshafts with these new heads. One key factor in a decission to run these heads would also be the ability to run a larger cam shaft without flycutting. It is my understanding that the 11 degree heads offer greater P to V clearance? Thanks
Scoobs

Cary@Perf-Induction

iTrader: (1)

You are probably right. WE looked at that and it was such small percentage of total sales. The rule writers are the rule writers. and from what I have seen in the past being involved so much in the Ford racing is that no matter what the rules could not be written equally for the same reason that everybody on this forum are individuals and everyone thinks differently. So what one guy thinks may be an advantage the other guy may think he's full of crap. We are really looking out for the whole big picture, and make all the advantages we can make and try to have one of the best products avalible.
If they choose not to let or head be legal, they would only be hurting the series more than it is now.

Beast96Z

iTrader: (21)

I was told you would gain .150" free drop over a standard LS-1 head. You could deffinatlly slam a big cam in there with no problem.

JaSSon

iTrader: (11)

As far as E.T.s go, TEA leads the pack. There also inexpensive.

Cary@Perf-Induction

iTrader: (1)

that is correct, in some cases more, and in some matbe just a little less. it depends on what chamber volume is requested.

MUSTANGEATER

iTrader: (10)

The Current LS1tech rules say you can have a +/- 2 valve angle I don't see why reverse angel milling them a little wouldn't make them legal.

Patrick G

iTrader: (14)

Oh, please elaborate (the leading the pack as far as ETs go)!

Cary@Perf-Induction

iTrader: (1)

JaSSoN,

As for as who leads the pack. There is not one shop that you can say leads the pack. We all have been successful in one way or another. TEA has a lot of stuff out there and I think Brian is a very good cylinder head guy. It depends on what you call leading the pack.The two fastest LS1 cars in the world use Heads from ET Performance. Kurt from Wheel to Wheel uses AFR heads that I ported. And so does Hardcore which is right behind with a 7.10 @ 194. When it comes to prices we are actually less expensive than most other shops out there. When it comes to CNC quality, Look at our stuff, its hard to beat. We all want to say were the best, but when it comes down to it. We all are the best. ET Performance supplies over 150 different shops just in this country, Not to mention 15 others throughout the world. We stay low key and are around a lot more than you think. Everyone will have their shop of choice. Maybe TEA, maybe ET, maybe Patriot, FFHP,GTP,PRC so on and on and on. Its nice to have that choice. I'm sure it even becomes hard for a guy to buy when there are so many choices.

Cary@Perf-Induction

iTrader: (1)

when it comes down to that technicality. We can easily offer a 13 degree head without angle milling. good point though.

MUSTANGEATER

iTrader: (10)

That's just awesome. Very few cylinder companies are as flexible as you guys, kudos to you, I don't know about most people on here but that means a LOT to me. I've tried to get a certain company to just file the core box when buyin a porters version of the casting, but they would have no such thing, needless to say I refuse to use their stuff. Hopefully Pro/NMCA lets your heads castings become legal, if not I'll stick to a set of 5.3's for that motor


btw are the ETP heads heavier than the stock castings? if so how much?

Cary@Perf-Induction

iTrader: (1)

they are about 5lbs more per head approx.

The deck is about .900 thick. if we milled them another .200, they would still be heavier. I will try to post some pics of cut-aways tomorrow.

JZ'sTA

iTrader: (23)

Well there you go. If the LS1 tech rules make you add 50 lbs because of the 11 degree heads there is 10 lbs right there.
Now you just need to run a full tank of gas and your good to go on weight. (Until you burn all your fuel)
So Carry lets say someone wanted to do a set of 225's with a T Rex without flycuting, and how about using a 59cc head. Possible?

Craig@ETPerformance

iTrader: (1)

These can go to a 35cc lowest and 72cc highest.

We are starting to work on gettting ours heads legal for NMCA/PRO classes.

JaSSon

iTrader: (11)

Im not talking fastest cars in the world, more like middle of the road guys like me. Cars with medium to small cams, above average weight. Its not all about the dyno. My car dynoed 299rwhp with bolt ons and ran 12.0s.

Patrick G. I see your car makes lots of power, What kind on e.t.s are you running now with those AFR 205s.

Craig, nice pics.

Wet 1

iTrader: (4)

12.0's @ what??? That's where dyno #'s come into play.

Let's not trash this thread guys, a lot of good stuff here and it doesn't need to be littered with my head is better than your head BS...

Thanks.

Scoobie

iTrader: (8)

Thanks for the great info Cary, I second that TRex and 59cc chamber idea. Sounds sick!