Going turbo

[Grr]

Also wondering how you are coming on this. I would for sure suggest not using a 76 for your goals. I still suggest going with the FI SX80, it is rated for 1300hp, and is far more efficient than a PT88, along with a little better spoolup. The PT88 is really old technology, also if you are interested, the guy i bought my Y2k from has some Innovative 88mms off his pro mod car he is selling for $1k each. Said they make insane power.

[RealQuick]

Also wondering how you are coming on this. I would for sure suggest not using a 76 for your goals. I still suggest going with the FI SX80, it is rated for 1300hp, and is far more efficient than a PT88, along with a little better spoolup. The PT88 is really old technology, also if you are interested, the guy i bought my Y2k from has some Innovative 88mms off his pro mod car he is selling for $1k each. Said they make insane power.

800rwhp is not a problem for a T76 on a 355ci... especially a T76GTS. The turbo is plenty capable... it is a matter of the heads/cam combo he matches up with it.

I haven't seen results from the SX80 or ST series turbos... as far as being far more efficient... don't know about that until I see the results. What I do know is that the PT88 has been making 900+rwhp for many years, and still continues to.

Parish made ~1050rwhp @ 24psi thru a 4L80e in his truck with a 408ci and PT88

Supposedly one of Jose's customers made 102xrwhp @ 21-24psi with a PT88 and 355ci LT1.

Purevil (local guy here) made ~mid 800's rwhp @ 14psi and 93 octane with his 408ci LSX

Mightymouse was around 980rwhp I believe with his PT88 setup

Many a Ford 306-347 have made over 1000rwhp with PT88's.

I have built quite a few LT1 turbo kits, and what I know is that space is tight in the engine bay... and if you want to avoid a big T6 turbo (like a Y2k 88mm), then I would go with a PT88 without a doubt. Now, if you don't care about space and will stand the radiator up... I would just go with an S88 and make 800rwhp @ 12-15psi.

[Grr]

my point exactly, why push it that hard when a large frame can do it much more easily and reliably. I ran a 75mm S400 on my GN for 2 years, and pushed it to high 600s whp a few times, at around 16psi. Didnt want to take the stock motor any higher. If your looking to make that kind of power, making the turbo fit is a small part of it. That is partially why i went with a 80mm this time, I should be able to get about 650whp on pump gas and around 12psi, and 800whp up around 18psi, thanks to my new heads

[LT1_Fireman]

800rwhp is not a problem for a T76 on a 355ci... especially a T76GTS. The turbo is plenty capable... it is a matter of the heads/cam combo he matches up with it.

I haven't seen results from the SX80 or ST series turbos... as far as being far more efficient... don't know about that until I see the results. What I do know is that the PT88 has been making 900+rwhp for many years, and still continues to.

Parish made ~1050rwhp @ 24psi thru a 4L80e in his truck with a 408ci and PT88

Supposedly one of Jose's customers made 102xrwhp @ 21-24psi with a PT88 and 355ci LT1.

Purevil (local guy here) made ~mid 800's rwhp @ 14psi and 93 octane with his 408ci LSX

Mightymouse was around 980rwhp I believe with his PT88 setup

Many a Ford 306-347 have made over 1000rwhp with PT88's.

I have built quite a few LT1 turbo kits, and what I know is that space is tight in the engine bay... and if you want to avoid a big T6 turbo (like a Y2k 88mm), then I would go with a PT88 without a doubt. Now, if you don't care about space and will stand the radiator up... I would just go with an S88 and make 800rwhp @ 12-15psi.

Thanks for the info guys it helped a lot.

[Fastbird]

Problem with the ST series larger frame turbo's is space. There's just not a lot. It's the primary reason why I stuck with the 76, so I wouldn't have to do a TON of modifications under the nose of the car.

[dsmawd350]

heres how my GT42 mounts, thats on the previous car, mine will have a notched out radiator support for more room, i think with a few tweaks i could have room to go bigger.