Black X

iTrader: (9)

I had always wanted to see a direct compariston of a PT76 vs a PT88 physically but had a hard time finding one. I purchaced a PT88 for the 2009 Season and thought I would share the side by side pics.

The PT88 is 1.25" Longer then the PT76 and the real magic for my excessive back pressure will happen on the turbine side. The turbine wheel is close to a half inch larger

Enjoy!

ItsNotStock

iTrader: (24)

Let me know how you like the PT88. I will be getting one here shortly and am second guessing between this and a GT47-88

SaultysHuggerSS

iTrader: (17)

i just recently took these exact pics

edit 76gts looks small under my hood now

itsnotstocknow > ive been reading good reviews on the gt47-88 but the pt88 is a vary nice unit

otherwhitemeat

iTrader: (3)

Get the 47-88....much better turbo

ItsNotStock

iTrader: (24)

What is the difference between the two? As far as I know they are the same internally, but have different housings. I am going to be nowhere near maxing out the PT88 so wouldn't the smaller PT88 spool up quicker than the GT47-88?

BLWN1

iTrader: (6)

Whats size difference in the 47-88 and the pt88, from the flange layin flat to the top point, anywhere to find this?

DrTurbo

iTrader: (3)

A GT47 and PT88 share nothing. Both exhaust wheel and compressor wheel are different. GT47's use the 6 blade comp wheel, PT88's use the older 7 blade TV wheel.

Shearer

GT47 also requires a t6 flange.

DrTurbo

iTrader: (3)

You can get them with T4 flange as well, and also a T4 mid-frame version as well.

BLWN1

iTrader: (6)

Dr can you get me dimensions or a gt47 with a t4? Im researching options, will be buying next month. I think I sent you a pm?

ItsNotStock

iTrader: (24)

It is easier to call them, and talk to Jose. They get hundreds of e-mails and pms a day

DrTurbo

iTrader: (3)

I just looked at my PM box....did not recieve anything from your screename. As for size......

Basic measurements can be found here in a full schematic


http://www.turbobygarrett.com/turbob...0-7,8,9,10.pdf

BLWN1

iTrader: (6)

That should almost work.... can you price me one in a T4? I dont wanna call til Im ready to buy.

94dragbird

iTrader: (6)

What's the advantage of the GT47-88 over the PT88? Is there really that much hp to be gained?

ItsNotStock

iTrader: (24)

PT88 is rated to 1250. GT47-88 is rated to 1450 I believe. Thats at the wheels.

94dragbird

iTrader: (6)

For the price I think I will stick with the PT88. 1250 is good for my LT1 383 build. Not to many LT1s that run at my track and only like one turbo car.

02WSSICK

iTrader: (8)

PT88-47 is rated at 1450 by precision

ItsNotStock

iTrader: (24)

I think we're talking about different turbos. The T4 flanged PT88 is rated to 1250 and is the biggest T4 turbo you can get. I have never heard of the PT88-47, but it might be rated higher due to it being a T6.

Black X

iTrader: (9)

The PT88 is the TV wheels capable of 1250 as you mentioned.
The PT 88-47 is a GT4718 CHRA stuffed in a T4 package, capable of 1400. Its a bad *****.. Easy way to tell the old PT88 has 7 compressor blades Like mine, the PT8847 has 6 Compressor blades and it's pissed off right outta the box.

02WSSICK

iTrader: (8)

If you are limited on room, ill get the pt8847 over the gt4788, size wise is a lot smaller unit and it will make plenty power on a small ci motor, i was able to tucked mine right where the alternator goes.