Forced Induction Superchargers | Turbochargers | Intercoolers

Best Direct Replacement for 76GTS?

Thread Tools
 
Search this Thread
 
Old Feb 7, 2008 | 09:15 AM
  #1  
GTO30272's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 34
Likes: 0
Default Best Direct Replacement for 76GTS?

I am looking to replace my Precision 76GTS turbo and I would like to know what is the best direct fit replacement. I am not looking to change any of the piping, which I currently have a single 3" exhaust. This is in a rear-mounted setup on a 383 engine. I was thinking of just going to the 78GTS but would like to know what else may be out there. I originally wanted to go to the ST80, but I do not want to change to the larger piping. I also considered going to the DBB option that the 78GTS has, but have read many mixed opinions on that issue. Thanks in advance for your help.

P.S. Reason for the change is I would like a small bump in power with minimal effort. 30whp would be ideal.
Reply
Old Feb 7, 2008 | 10:04 AM
  #2  
Frost's Avatar
FormerVendor
iTrader: (45)
 
Joined: Jul 2005
Posts: 5,913
Likes: 2
From: Richmond VA
Default

30rwhp can be found in tuning in many cases.... do you have meth? If so, what is your final AFR on meth, and what does your timing look like in boost areas?
Reply
Old Feb 7, 2008 | 11:39 AM
  #3  
GTO30272's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 34
Likes: 0
Default

To be honest with you, I do not do anything related to the tuning, as I use one of the top tuners in the country to handle all of that. I know there are different ways to gain power, but the reason why I mentioned I am only looking for a small gain is to show that I have no desire to move up to a 91 or something dramatic like that, as I would imagine it would require changing the exhaust piping, as well as, would have an effect on spool time. Since it is a rear-mount, I do not want to go to a turbo that is going to be considerably more laggy than the 76GTS, but I would like a little more power from the turbo and something that does not require any changes. Thanks in advance for your help.
Reply
Old Feb 7, 2008 | 12:41 PM
  #4  
Zombie's Avatar
10 Second Club
iTrader: (2)
 
Joined: May 2004
Posts: 2,498
Likes: 4
From: Las Vegas
Default

Originally Posted by GTO30272
P.S. Reason for the change is I would like a small bump in power with minimal effort. 30whp would be ideal.
Why don't you just turn up the boost 2psi? Cheap, easy, no piping changes and definately requires minimal effort.
Reply
Old Feb 7, 2008 | 12:43 PM
  #5  
GTO30272's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 34
Likes: 0
Default

Turbo needs to be replaced anyway and I do not want to rebuild it, would rather just get a new turbo. I figured while I am at it, instead of buying the same thing, why not upgrade a little.
Reply
Old Feb 7, 2008 | 12:45 PM
  #6  
DrTurbo's Avatar
LS1TECH Sponsor
iTrader: (3)
 
Joined: Mar 2006
Posts: 3,966
Likes: 2
Default

Go with the 78GTS then...only direct swap out there. We have had good luck with them so far...
Reply
Old Feb 7, 2008 | 05:57 PM
  #7  
Websy21's Avatar
TECH Addict
iTrader: (34)
 
Joined: Jun 2007
Posts: 2,346
Likes: 1
From: Alberta, Canada
Default

Why don't you guys do the 80gts anymore? Its rated for 1200hp right? What the 76 and 78gts rated at?
Reply
Old Feb 7, 2008 | 08:32 PM
  #8  
DrTurbo's Avatar
LS1TECH Sponsor
iTrader: (3)
 
Joined: Mar 2006
Posts: 3,966
Likes: 2
Default

80 mm wheel was changed and now sucks..... so we dropped it.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Feb 7, 2008 | 08:36 PM
  #9  
Websy21's Avatar
TECH Addict
iTrader: (34)
 
Joined: Jun 2007
Posts: 2,346
Likes: 1
From: Alberta, Canada
Default

Originally Posted by DrTurbo
80 mm wheel was changed and now sucks..... so we dropped it.
I see, well hope my 80 stays together or looks like I have to upgrade my PTK kit to accept an ST80 or larger. I talked to a guy on here who upgraded his kit with a pte88 on his 408. He told me all what he had to do, umm no thanks. If that happens I am probably jsut better off buying a whole new kit!
Reply
Old Feb 10, 2008 | 04:57 PM
  #10  
GTO30272's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 34
Likes: 0
Default

Originally Posted by DrTurbo
Go with the 78GTS then...only direct swap out there. We have had good luck with them so far...
Thank you for your help. I wasnt sure if there was anything that would be a direct replacement or not, but I am kind of surprised there isn't. What about your FI70 with 81mm turbine wheel, optional race cover and .96 A/R? Would that work in my setup or does it require larger piping? Thanks again.
Reply




All times are GMT -5. The time now is 03:29 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE