355 LT1 Turbo initial dyno numbers
Thread Starter
Registered User
Joined: Jul 2002
Posts: 177
From: GA
Re: 355 LT1 Turbo initial dyno numbers
In process of tearing the car down still but the end is near!!!
TransAm396- the wastegate is a tial 38mm and has been plenty tricky in setup
ChrisUlrich- P trim turbine wheel
TransAm396- the wastegate is a tial 38mm and has been plenty tricky in setup
ChrisUlrich- P trim turbine wheel
Registered User
Joined: Jul 2003
Posts: 1,668
From: Cliffside Park, NJ
Re: 355 LT1 Turbo initial dyno numbers
Originally Posted by Shankels94TA
In process of tearing the car down still but the end is near!!!
TransAm396- the wastegate is a tial 38mm and has been plenty tricky in setup
ChrisUlrich- P trim turbine wheel
TransAm396- the wastegate is a tial 38mm and has been plenty tricky in setup
ChrisUlrich- P trim turbine wheel
Registered User
Joined: Jun 2006
Posts: 66
Re: 355 LT1 Turbo initial dyno numbers
P-Trim is a larger than normal wheel. Its more laggy because of weight but its stronger for high boost.
Those Master Power turbos seem good. I had one in my drag civic but I only had that car for a month. Might boost my LT1 looking into a t-70 too.
Those Master Power turbos seem good. I had one in my drag civic but I only had that car for a month. Might boost my LT1 looking into a t-70 too.
Last edited by Under_Pressure; Sep 7, 2006 at 07:16 AM.
Registered User
Joined: Jul 2003
Posts: 1,668
From: Cliffside Park, NJ
Re: 355 LT1 Turbo initial dyno numbers
Originally Posted by Under_Pressure
P-Trim is a larger than normal wheel. Its more laggy because of weight but its stronger for high boost.
Those Master Power turbos seem good. I had one in my drag civic but I only had that car for a month. Might boost my LT1 looking into a t-70 too.
Those Master Power turbos seem good. I had one in my drag civic but I only had that car for a month. Might boost my LT1 looking into a t-70 too.
I am going to be boosting my 385 LT1 and I want to use an 80mm wheel in a T76GTS-H. I like the results I could be seeing A LOT on ONLY 10lbs when I plan to boost 20lbs.
Registered User
Joined: Jun 2006
Posts: 66
Re: 355 LT1 Turbo initial dyno numbers
The way I see it the stage 5 turbine wheel is a good choice for those looking at a Hi-HP street & strip monsters while the P-Trim and Q-Trim have a large amount of lag and should ONLY be used by those looking to obtain 700 + HP with supporting mods. The turbine's also change when going P or Q trim. Ill see if I can get the exact size but the big about almost twice the size.
Registered User
Joined: Nov 1998
Posts: 762
From: Huntsville, Alabama
Re: 355 LT1 Turbo initial dyno numbers
Originally Posted by Under_Pressure
The way I see it the stage 5 turbine wheel is a good choice for those looking at a Hi-HP street & strip monsters while the P-Trim and Q-Trim have a large amount of lag and should ONLY be used by those looking to obtain 700 + HP with supporting mods. The turbine's also change when going P or Q trim. Ill see if I can get the exact size but the big about almost twice the size.
. You obviously haven't driven a 350 SBC with a 76MPS,76GTS or GT42.
Registered User
Joined: Apr 2003
Posts: 1,056
From: Marietta, GA
Re: 355 LT1 Turbo initial dyno numbers
If your goin with spec, just go stage 5, skip the stage 4...it still drives very nice, just barely stiffer than my old stage 3i. I see you live in GA, if you want, come by (Kennesaw) and you can drive my car to get a feel for the clutch if you'de like. Personally, i love it so far, and SPEC has been extraordinarily good to me in the past...
I'm glad you documented the PTK kit with pics on your car domain site. 
Registered User
Joined: Feb 2002
Posts: 5,645
From: Bridgewater, MA
Re: 355 LT1 Turbo initial dyno numbers
Originally Posted by LT1runner
What have you done to your stock heads? I hope nothing, but I was thinking you may have had them ported.
Thread Starter
Registered User
Joined: Jul 2002
Posts: 177
From: GA
Re: 355 LT1 Turbo initial dyno numbers
Howdy folks...its been awhile. The car is back together and should be running soon. Plumbing the intercooler water system with all braided lines has been a hassle but worth it. Ill post some more pics shortly and some vids once its running.
Lt1runner- I cleaned up and port matched the stock lt1 heads myself. I also installed ferrea valves with beehive springs. Why would you hope not?
Thanks again for all the kind words....any comments are always welcome.
Lt1runner- I cleaned up and port matched the stock lt1 heads myself. I also installed ferrea valves with beehive springs. Why would you hope not?
Thanks again for all the kind words....any comments are always welcome.
