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A well built 4L60 can take 600hp pretty well, but not for long. If you were to go above that, stick with the 2004R. Once you get above 600hp in a heavier car, the '60 tends to break the rear ring gear and input shaft or drum (the tower in the drum splits) and there's almost nothing you can do...

Call Frank at CPT: http://www.geocities.com/cahallperformancetransmissions/CPT.html He's one of the best there is for building up a 700 or '60 and his prices are VERY reasonable. He's got a great reputation over on the cz28.com message board too ( 12SCNDZ is his screen name...

Point taken.... but this isn't going to be a track only car, therefore i don't want to drive down the road at 60-70mph buzzing at 2500-3k rpm. Built TH400 + GV overdrive unit + custom DS + any other wiring/bracing and such would come out well over that $2895. The GV is $2200 alone. Not sure...

My 200-4r bit the dust a while back and want something better. Lately i've seen the f-body guys start to use this trans a lot more since there are now crossmembers out there that allow the 4l80 to be used in the 4th gen f-body. I think it would be better for me to use this trans for my up-coming...

I loved the TA49, spooled almost exactly like the stocker even with the stock converter. Upgrading the injectors is a very good idea too. BTW, if you're looking to go beyond a stock setup I have mine and the injectors for sale if interested. :)

Got up to 23psi with 100% denatured, thrasher 92 chip, and 93 oct. Still didn't have any knock and O2s in the 800-810 range. Was shooting for 25psi but the trans wouldn't let me play with it anymore. I'm sure that 25-27psi is plenty possible with turbos a little larger than stock, doubt the...

What are the advantages and disadvantages to the GTQ, P, and Q trims? i've been out of the turbo game for a while since the GN hasn't been running for a couple of years. Thanks

Lookin good guys, thanks. So 12 flats should be no problem then... DRs and a new posi unit are also awaiting install. 11.90 should be more than enough to take care of 80% of what runs around here..... there's a guy with a supercharged 5.0 that i think has a little lesson coming to him ;)...

Hey guys/gals... it's been a while. Just wondering what is being done with the ol' TA-49 these days. I'm hoping to get my trans rebuilt soon and get some long-awaited (2+ years) runs at the track this spring. Hoping for mid-high 11s at 25psi and the SMC alcohol running wide open. Also, traps...

On stock heads, what are volumes of the intake and exhaust ports? Valve angle? Flow numbers? Thanks!!!

Kenny Dutt is THE man......PERIOD! Hey Cal, nice car. :D :cool:

Ummm....NO I don't think it will handle 6000hp like our Top Fuel and NHRA guys are. And they use blowers, not turbos(which means there is a hell of a lot more power there to be had). And don't forget that Stage II Buicks have already broken the 1600hp barrier and sub-7sec times. And...

I wonder if there is some way to mount a 4L80 behind that joker. Maybe someone with a machine shop could make a bellhouseing adapter and crossmember or something.

As a side note, isn't the fox about 500-600lbs lighter than the f-body? It seems as though 100lbs and 10hp account for about the same ET differences in the quarter. Just something to think about.

Get to the track and get some times for heaven's sake! Isn't 900 hp in the 8sec. territory? You're living my future right now TurboTR.;)

If you want a real kick ass V6 and don't mind taking out a loan for a year or two, wait until TA Perf. releases the alum. stage block and stuff it with good parts before slamming it in your car. Or wait until I go to get my TA block and you can buy my drivetrain, all bolt-ons included. :)...

Hey Reg. when are you gonna get us some times on the snake? I've seen all the magazine crap, but I want some hard numbers. The 03 Cobra is an awsome car, regardless of the pathetic excuses and biased trash talk I've been reading on the net for the past few months.

COOOOOLLLLLL! :cool: I'll be waiting!!

By the name "Roguevette(sp?)"?

Welcome back! Well, if you still have the feel for boost then you're set! Tech in these cars has come along greatly in the 6-7 yrs since you left. Many adaptors and stuff are now available so we can use parts from other makes, i.e. the MAF sensors from the LT1 f-bodies can now be used with our...