GoatChs

iTrader: (8)

My engine & parts are being dropped at the shop on Monday. I'm having a LPE GT2-3 installed in an LS1 with 9.0:1 pistons (when 64cc chambers used), 6.0L '317' heads (with 72cc chambers) and a Radix with a 3" pulley (9 lbs boost).

Question: Should the cam be installed straight up or with some advance? +2? +4?

99ssleeper

iTrader: (98)

I installed mine straight up...I dont see much benefit to doing it any other way since the cam offers a broader powerband than other peakier cams out there.

GoatChs

iTrader: (8)

So putting some advance into it 1) brings the power band in earlier or 2) lowers the power band in the rpm range?

My build goal is for a 1500-6500 band...and although I have not been able to find any info on the range of this cam, the duration appears to put it where I am aimming, correct?

goober35

iTrader: (1)

Staight up. Post up you numbers with the cam and blower that thing is going to make lots and lots of power.

GoatChs

iTrader: (8)

The motor's being machined & assembled by Morgan's Machine & Marine in Walnut Creek, CA...they do alot of race building. He's pretty enthused with the parts I've put together. After I get it into the truck I will to take it to Combination Motorsports in Vegas for a dyno tune. Might be around first week in June or so...but I will definitely post the dyno sheets for all.

I'm already being warned about my tranny...even with the bolt-ons, folks in the know don't think it will last long!

Goober: I see in your sig that you're running the Comp R lifters and 7.4 push rods but nothing about adjustable rockers...how are those things working out for you? I have been reading the posts about problems with achieving correct preload without the adjustable rockers...

99ssleeper

iTrader: (98)

You are correct.

My GT2-3 hp peaked at 5750 rpm and the tq peaked at 4750. This was on a bone stock LS1...

Matt B 991LE

My car N/A, with the GT2-3 and bolt ons made 368hp and 359tq. I wan to say the peak HP came at close to 6K and the tq peaked at like the 4.5k.

goober35

iTrader: (1)

I had the heads surface milled. So that when i checked the push rod length the where right on the money.

GoatChs

iTrader: (8)

How bout that. I doubt I'll be milling my heads as they are new castings (unless there is something afoul), so without adjustable rockers I would have to shim. And at my shop's $90/hr rate, I would probably break even at best and be better off purchasing the rockers.