Thread: 99 GTP Partout - Intercooler / GenV 90 conversion / QUAIF Posi Diff *RARE* / etc.

Parting out my 99 GTP
Built Trans:
3.69 Gears (Not 3.29 GT or the stock 2.93 GTP) Custom PCM required.
QUAIF POSI DIFF *RARE* - Amazing mod. Prior to this I broke half a dozen stock diffs
VAC MELT 300M Input shaft. (originally $500)
Hardened Pump & 4th gear shaft. 04 sprags (not element sprags) Edge Racing TQ Converter / Blue plate clutches + bonus clutch / wavy plate removed / shift kit / hardened sleeved valve body.
Low miles on this trans.

Engine:
Diamond Forged & ceramic coated pistons
Aggressive cam
Roller chain
CTSVR Race lifters
Balance shaft delete
Upgraded crank damper
Ported heads
Pushrods / retainers / ARP bolts / etc.
2.25" Air Water Intercooler w/BOSCH pump
42lb injectors
Gen V M90 (low miles) w/turn down adapter. gutted stock TB with MAF removed and LS MAF for less restriction.
Modular snout w/various pulleys

Suspension / Brakes
BAER EradiSpeed+ 2pc rotors and calipers
GMPP (KONI) adjustable rebound struts
Eibach Springs

Doors / Hood / Interior / Borbet Type E Chrome wheels w/new tires



Located in Minnesota.

Sell just the diff?

Originally Posted by 00grandprixgtp

Sell just the diff?

That's probably the most valuable component of the whole part-out.

Once I sell any part, I'm committing to parting the entire thing & trans.

It was a $1500 part, and required a good stock diff to transplant the planet gears. Unclear if your replacing an exploded diff or not, but I'd sell it complete - $1k

If you have never driven a FWD vehicle with POSI, but it is a startling mod. Makes the car torque steer quite hard compared to the stock open diff. Also gives you amazing traction coming out of corners, or making a right turn into traffic - you can basically accelerate as if you were in a straight line when cornering. Which also leads to added stress to the half shafts. My car was around 450WHP and broke a fair share of them.

Also; if you floor it on a road that has a crown to it; assuming your car makes a lot of power and breaks tires free at speed; having POSI will make the entire car drift toward the curb while spinning, as opposed to the open diff which goes more straight, and limits traction a bit. (i.e. you basically have to /DRIVE/ the car)

The diff makes a stupid big difference; I've never experienced anything quite like it.

Torsen Differential, How it works ? - YouTube

Awesome let me know if it parts out mine is still good but have broken 3 diffs already and just went turbo and blew up gxp chains on a 1-2 shift under boost so know the diff will be next to explode

How much for just the tranny?

I'm also interested in the entire transmission.

What compression does the engine have?

Interested in the springs, $$?

Very interested in transmission