Rob

iTrader: (6)

Went down to see Jeff at Carolina Auto Masters to get a retouch on the tune. After a couple of pulls, it was back to just about perfect again. HP is about where I thought it would be with a baby cam like the GT2-3. Its the torque I was disappointed about. I will post the graph when I get it scanned but final numbers were 393/380 I believe.

Drives great and pulls better everywhere but it didn't hit my goal of 400/400. I'll drive it like this all year and see how I like it. Hopefully it'll put up some numbers at the track. But for a completely stock sounding car, it seems to run pretty good.

Edit: Here's the graph. Cam only vs cam/heads

JS

iTrader: (4)

I'd add the LSX/90 and boom 15/15 = 408/395.Thats the last mod u need to hit 400+,I am very impressed with your results.I now hope to hit 375RW A4 with my heads and 214 cam,then I'll go LSX down the road too..

Nothing like a stock idling 400RW monster
Good results Rob...

Bo White

iTrader: (59)

Almost every H/C 346 M6 car Ive seen dynoed doesnt have equal torque/HP so your about right were it needs to be. Even bigger cam cars usually are like 434/400 or 422/393 or something simular. Glad you got it all together and driving around

Rob

iTrader: (6)

Actually, if I changed the stock catback exhaust, I think I might even get to 400. Ported TB would take it over for sure

fasteddyss

iTrader: (1)

Looks real good!!!

Are those the CNC ported heads??

Patrick G

iTrader: (14)

High dynamic and static compression are vital to make big mid-range torque. What is your static compression ratio? What thickness head gasket are you running? The GT2-3 is not known for making lots of low end torque, but it kicks butt in the top end.

Rob

iTrader: (6)

These are GMPP CNC LS6 heads with 65cc.

Static compression is around 10.7:1 +/- Gasket was a .045 cometic.

I knew the GT2-3 wasn't a torque king but was hoping the spread would have been closer like the stock heads. Actually its not as bad I think it is. 8 vs 13 spread. So I guess its really not that bad....

Patrick G

iTrader: (14)

Think about it this way, about the only way to get your torque peak and hp peak to be the same is to have a low rpm motor. Since the tq and hp graphs cross at 5252 rpm, your motor would have to have a fairly low hp peak (under 6000 rpm) to do that. Take my motor for instance: Torque is above 400, but the split between tq and hp is even greater than your's because of the rpm that I'm turning. I'd say your motor is going great. A few more thoughtful bolt-ons and you'll be there.

Rob

iTrader: (6)

Yes, there are lots of things I could do to get the numbers I want. Solid rear instead of IRS, cat back, TB, intake(either CAI or manifold), ditch the cats, etc.

FWIW, its a great little street package. Can't wait till the track opens up this season. Should easily run low 12's

NviouSS

iTrader: (8)

very nice numbers. i need to do me a head swap now.

Bo White

iTrader: (59)

A ported TB will get ya 400 for sure . Ive seen 7-9 gains very regularly here at the local Dynojet, on more powerful setups Ive seen up to 12

TroubledWine3

iTrader: (3)

Finish bolt-ons and then see what you think about the numbers. That cam is pretty small so it's doing well to put out the numbers it's doing right now, and you're leaving a lot on the table without a catback and ported TB or FAST intake/NW TB. Looks like a fun car, though. Keep us updated.

Rob

iTrader: (6)

Ported TB is next on the list. As far as cat backs go, you really don't pick up much over the stock GTO exhaust. Best results I've seen have been 6-10rwhp. That's not a lot of gain for $600-1000 they want for them.

I doubt I'll end up changing to a fast any time soon. The LS6 is pretty good for this cam. I really want to get an over the radiator setup like the Aussie's are using but that still seems to be a couple months off. Or just build my own, which I'm contemplating.

I do have a complete '05 stock exhaust if I decide to change the bumper. That is 2.5" all the way back vs. my 2.25".

11 Bravo

iTrader: (3)

It don't look right to me. A guy in town got over 400 with a 226/226 and stock heads, tuned and dynoed by Jeff.
https://ls1tech.com/forums/showthrea...ight=226%2F226

George V

Rob

Looks good but I am thinking of a bit bigger now. Which of these do you guys think would give more torque at the lower RPM range? Same heads GMPP

Comp 212/218 .522/.529 114 or 222/224 .566/.568 112

George

Bo White

iTrader: (59)

The 222/224-.566/.568-112 is my personal favorite

Pimpium57

iTrader: (104)

How do you guys think ROB's track times would compare with his identical setup in an A4 F-body (3500 stall, 3.23 gear)?

Rob

iTrader: (6)

Easily in the 11's, possibly low 11's. Stall and traction in an F-Body, much better than a stick in a goat.

Slowhawk

iTrader: (12)

Thats not comparing apples/apples

Isn't the LPE a 207/220 or so? Those are good #'s for a tiny Cam

Rob

iTrader: (6)

207/220 .571/.578 118.5