Pt8847 Turbo
- Thread starter TATTYPE
- Start date
I used to have one of those. I dyno tested it for Precision several years ago. It's basically a 47-88 with a PT88 compressor cover/wheel and a T4 flanged turbine housing. I think they are rated to 1400hp. Joe Lubrant used to have one and I think Ted A. is using one. What else do you want to know? I may know where there is a used one for sale.
Back when I tested it, we were comparing the 88-47, 80-47,and PT-88. I'll have to dig out the dyno sheets, but I remember the 80-47 had the most mid range power and the 88-47 had the most peak power. Back pressure was lowest on the 88-47 and highest on the PT88. On a Stage2 street car, I would just put a 42-76 on. Preferably a BB.
Cal is right on target. He sent me the 47/88, 47/80 turbos to test. I had a Jacks old 76 turbo on the car prior to this, the 47/88 was much harder to spool in comparison to the 47/80, both were night and day from the T-netics 76. I have a 42/76 turbo I got from Cal also and it really is a great turbo. I now have a 88/47 turbo with the new motor and it has ran 163.31 in the 1/4 and 131.15 in the 1/8th. Unless you plan on making big power I would run the 76 also like Cal said. The 76 is capable of 8.8x at 154+ I predict at #3400, but you will be pushing the thing hard to get it there, but the street manors will be much better.
Thanks Ted and Cal for the heads-up on the turbos. I am new to the buick thing. I have went to BG nationals last 2 years and going this year but only on saturday. Had my GN 3 years and T type for 2 years. So I will need help sooner or later from some one that has been there. The first time I drove one WOW I was hooked . Got to drive them off the transport truck. I was a GM technician for 15 years own a shop now . I have two boys thay are hooked too. The GN is mostly stock. The t type has a 274 8:1 TA block engine with TA SE heads race port, solid roller cam 226/226 ,roller rockers , TA ss 4bolt headers, bigstuff3 ,4L80E trans, 4000 stall 3 disk lock-up converter , 4 inch rjc intercooler , ported champion intake.
How much boost are you running , timing , air temp ,octane fuel Ted ? Do you think I have enough engine to run a 88-47 turbo ?
Cheeseburger
Active Member
- Joined
- Jan 25, 2004
Any pictures of that turbo?
22lbChevelle
Member
- Joined
- Jan 14, 2005
Such big numbers......... can't comprehend.......... limit as n goes to infinity......divergence........oh boy....
Richie that is just sick. 145 in the 1/8th and 175 in the 1/4 is just nuts. Was that with the T4 88 or the larger T6 47/88? What did the car weigh?
P.S. update your sig!!
that was with the t-6 i believe
and that was @ 3030lbs. And I made only One 1/4 mile pass with it and it went a 7.82 @175 that's why I think there could have been a little more in it. I don't race 1/4 but at one of the races at rockingham after qualifing friday night I ran it out the back and that's what it did. It has a low 5.teen 1/8 mile time on that pass.
I dont have anypics of it on this computer but this one you can see a little of it
and that was @ 3030lbs. And I made only One 1/4 mile pass with it and it went a 7.82 @175 that's why I think there could have been a little more in it. I don't race 1/4 but at one of the races at rockingham after qualifing friday night I ran it out the back and that's what it did. It has a low 5.teen 1/8 mile time on that pass.
I dont have anypics of it on this computer but this one you can see a little of it
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Sorry to get off topic for one sec, but Richie in that picture does your car have a full fiberglass front end? Or is that just the bumper and hood?
Ok.. back to turbo talk
What is the difference between 47/88 and 88/47 (TED saw you posted it this way?)
I know the 47/88 is "usually" a T6 housing.. is the other a T4?
Thx!
Ok.. back to turbo talk
What is the difference between 47/88 and 88/47 (TED saw you posted it this way?)
I know the 47/88 is "usually" a T6 housing.. is the other a T4?
Thx!
The 88/47-H is the T4 version of the turbo. It is basically identical to the old PT-88 turbo in appearance. It uses the GT47/88 wheels inside it, the H is for the H-cover(compressor cover). The 88/47-H is the proper part ## for the turbo from PTE, that is the difference.
Richie, your car is bada$$. I'm sure with the car geared for the 1/4 you would have went faster, no doubt.
