PT88 too big for a 5.3?
PT88 too big for a 5.3? I've seen pretty mixed opinions on this so I figured I'd just ask. I have a 97 z28 roller that ill be converting to a street/strip lsx car. I'm starting with a stock car and will be building everything myself, and I would like to build the turbo setup just once, based around a pt88. After I get everything setup and running well, the idea is to swap in a forged iron block, probably a 370 or 90. But id like to get the car built and running on a throwaway motor first and get used to it before swapping in a forged setup.
Plan is:
Stripped 97, with enough interior to run our "street class"
Truck manifolds, pt88, a2a fmic
Th350/400, rmvb w/ brake, 9"
2 step, boost controller, etc
E85
Just a fun street strip car, I would like some easy 9s when everything is dialed in, and to hurt some feelings with an "lt1" car. So will it be alright on a 5.3 for a while while I dial the rest of the car? I don't want it to be a dog, but idk what to expect, this will be my first boooost build. Thanks!
Plan is:
Stripped 97, with enough interior to run our "street class"
Truck manifolds, pt88, a2a fmic
Th350/400, rmvb w/ brake, 9"
2 step, boost controller, etc
E85
Just a fun street strip car, I would like some easy 9s when everything is dialed in, and to hurt some feelings with an "lt1" car. So will it be alright on a 5.3 for a while while I dial the rest of the car? I don't want it to be a dog, but idk what to expect, this will be my first boooost build. Thanks!
I've seen pretty mixed opinions on this so I figured I'd just ask. I have a 97 z28 roller that ill be converting to a street/strip lsx car. I'm starting with a stock car and will be building everything myself, and I would like to build the turbo setup just once, based around a pt88. After I get everything setup and running well, the idea is to swap in a forged iron block, probably a 370 or 90. But id like to get the car built and running on a throwaway motor first and get used to it before swapping in a forged setup.
Plan is:
Stripped 97, with enough interior to run our "street class"
Truck manifolds, pt88, a2a fmic
Th350/400, rmvb w/ brake, 9"
2 step, boost controller, etc
E85
Just a fun street strip car, I would like some easy 9s when everything is dialed in, and to hurt some feelings with an "lt1" car. So will it be alright on a 5.3 for a while while I dial the rest of the car? I don't want it to be a dog, but idk what to expect, this will be my first boooost build. Thanks!
Plan is:
Stripped 97, with enough interior to run our "street class"
Truck manifolds, pt88, a2a fmic
Th350/400, rmvb w/ brake, 9"
2 step, boost controller, etc
E85
Just a fun street strip car, I would like some easy 9s when everything is dialed in, and to hurt some feelings with an "lt1" car. So will it be alright on a 5.3 for a while while I dial the rest of the car? I don't want it to be a dog, but idk what to expect, this will be my first boooost build. Thanks!
I do not have the experience with the combo you are asking about. However, logic would suggest that that turbo on a 5.3 engine is going to be laggy and you are going to have to spin the 5.3 to a high RPM to get a usable power band. It wouldn't surprise me if that turbo didn't start making power until around 4500rpm on a 5.3. Again though, I dont have the experience with that combo.
EDIT: Anyone who has more knowledge than me PLEASE feel free to correct anything I am wrong on.
Street strip car. I say go for it.... that's far smaller then some ford guys run on 4.6s and stuff... might not be that great out of boost but its an lt1 car. It will have more power then stock.... run it man. If you have to spinn it up. Do it. Its a cheap temp motor anyway. Have fun!
9 Second Truck Club
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From: Colorado Springs, Co/ Central, Ca
A pt88 is nowhere near a 1500hp turbo. Maybe 1200 max. You need a GT4788 or maybe even a GT55 for that. The PT88 will be a bit laggy on the 5.3L but will make killer power. 3.8L buick V6's, and supra's run them 5.3L is plenty. Spool should be around 35~4K RPM. Id go with a decent small tight LSA cam vs a LS6 or something wide. Something like the Isky 212/112 lsa will help light that thing off, and still make big power up top.
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Gotcha... I didn't know what a PT88 was, so I decided to research it.
http://www.precisionturbo.net/Street...PT8889-CEA/289
Apparently the PT8889 is not the turbo we are talking about in this case then?
Also, tight LSA = more valve overlap. Typically this is not desirable in a turbo app. Is this not the case with these engines?
http://www.precisionturbo.net/Street...PT8889-CEA/289
Apparently the PT8889 is not the turbo we are talking about in this case then?
Also, tight LSA = more valve overlap. Typically this is not desirable in a turbo app. Is this not the case with these engines?
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iTrader: (17)
Joined: Sep 2006
Posts: 3,672
Likes: 9
From: Colorado Springs, Co/ Central, Ca
Gotcha... I didn't know what a PT88 was, so I decided to research it.
http://www.precisionturbo.net/Street...PT8889-CEA/289
Apparently the PT8889 is not the turbo we are talking about in this case then?
Also, tight LSA = more valve overlap. Typically this is not desirable in a turbo app. Is this not the case with these engines?
http://www.precisionturbo.net/Street...PT8889-CEA/289
Apparently the PT8889 is not the turbo we are talking about in this case then?
Also, tight LSA = more valve overlap. Typically this is not desirable in a turbo app. Is this not the case with these engines?
It sure helps spool off of the line.....
A pt88 is nowhere near a 1500hp turbo. Maybe 1200 max. You need a GT4788 or maybe even a GT55 for that. The PT88 will be a bit laggy on the 5.3L but will make killer power. 3.8L buick V6's, and supra's run them 5.3L is plenty. Spool should be around 35~4K RPM. Id go with a decent small tight LSA cam vs a LS6 or something wide. Something like the Isky 212/112 lsa will help light that thing off, and still make big power up top.
Gotcha... I didn't know what a PT88 was, so I decided to research it.
http://www.precisionturbo.net/Street...PT8889-CEA/289
http://www.precisionturbo.net/Street...ger---PT88/283
Apparently the PT8889 is not the turbo we are talking about in this case then?
Also, tight LSA = more valve overlap. Typically this is not desirable in a turbo app. Is this not the case with these engines?
http://www.precisionturbo.net/Street...PT8889-CEA/289
http://www.precisionturbo.net/Street...ger---PT88/283
Apparently the PT8889 is not the turbo we are talking about in this case then?
Also, tight LSA = more valve overlap. Typically this is not desirable in a turbo app. Is this not the case with these engines?
This is the turbo in question.
When I say I want easy 9s out of the car, I want to be able to start it up, do a burnout, and run 9s, easily and consistently. I will probably eventually push it and who knows where that will go. Our DA is typically 3000+ and usually not the best prepped surface, so an easy 9 would be a decent accomplishment.
I'd be more than happen to hear from someone that has tried done this or something similar. I don't want to buy a 5.3 and a better suited 70-76mm, run it for a month, swap to a forged motor, and then have to hope the pt88 fits where I have the exhaust merged, redo the down pipe, redo the intake, redo the cold side, etc. Not only would I be buying 2 turbos, but I'd be wasting time redoing ****.
Plan for the forged motor is a 370-390ci, AFRs or TFS, undecided on intake or cam until the time comes.
Last edited by FlashLCD33; May 2, 2011 at 01:36 AM.
Just stick the 88mm on it for now, it'll go 9's EASILY as long as you got the rest of the setup decent since that car should be fairly light. For comparison my 3700lb ltd went 10.0 at 139 it's first time at the track leaving REALLY soft with a 5.3/76mm setup this weekend in Wichita which isn't the best track.
