Forced Induction Superchargers | Turbochargers | Intercoolers

Whats the difference between the 76gts and the 76/75?

Thread Tools
 
Search this Thread
 
Old Dec 1, 2012 | 05:29 PM
  #1  
fastcars95's Avatar
Thread Starter
TECH Regular
iTrader: (9)
 
Joined: Apr 2008
Posts: 431
Likes: 1
From: Ontario
Default Whats the difference between the 76gts and the 76/75?

I'm looking at a 76gts turbo. Is it the same as the current PTE 76/75?
If not what are the differences. I've heard nothing but good things about the 76/75.
Can anyone recommend anything else I should look at. I need something that will make 800whp on my LQ9 with a T56
Reply
Old Dec 1, 2012 | 09:20 PM
  #2  
LS1NOVA's Avatar
TECH Addict
iTrader: (12)
 
Joined: Nov 2002
Posts: 2,269
Likes: 12
From: Minneapolis,MN
Default

Same turbo, old name is GTS. If you get the CEA billet wheel its slightly better.
Reply
Old Dec 1, 2012 | 09:35 PM
  #3  
02sleeperz28's Avatar
9 Second Club
iTrader: (26)
 
Joined: Aug 2006
Posts: 1,833
Likes: 0
From: homeless
Default

Is the 76/75 capable of making 800rwhp?
Reply
Old Dec 1, 2012 | 10:25 PM
  #4  
Texhotrod593's Avatar
TECH Apprentice
iTrader: (7)
 
Joined: Mar 2007
Posts: 374
Likes: 0
From: texas
Default

^^yes
Reply
Old Dec 1, 2012 | 10:27 PM
  #5  
fastcars95's Avatar
Thread Starter
TECH Regular
iTrader: (9)
 
Joined: Apr 2008
Posts: 431
Likes: 1
From: Ontario
Default

Tthats what I like to hear.
Reply
Old Dec 1, 2012 | 10:32 PM
  #6  
02sleeperz28's Avatar
9 Second Club
iTrader: (26)
 
Joined: Aug 2006
Posts: 1,833
Likes: 0
From: homeless
Default

Originally Posted by Texhotrod593
^^yes
What did the setup consist of?
Reply
Old Dec 1, 2012 | 10:40 PM
  #7  
fastcars95's Avatar
Thread Starter
TECH Regular
iTrader: (9)
 
Joined: Apr 2008
Posts: 431
Likes: 1
From: Ontario
Default

I'm running an 05 lq9 short block with the ls2 style bottom end. CNC ported ls2 topend with ARP cylinder head studs and ls9 gaskets.
Reply
Old Dec 1, 2012 | 11:19 PM
  #8  
L92 fox's Avatar
TECH Regular
iTrader: (2)
 
Joined: Mar 2010
Posts: 423
Likes: 0
From: Wood river IL
Default

Pm sent
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 Dec 2, 2012 | 02:54 PM
  #9  
fastcars95's Avatar
Thread Starter
TECH Regular
iTrader: (9)
 
Joined: Apr 2008
Posts: 431
Likes: 1
From: Ontario
Default

Is there a big difference between the ball bearing Billet wheel unit and the older cast wheel with a journal bearing.
I found a deal on a brand new Ball bearing billet wheel unit but the cost is much more then the GTS I'm looking at. Almost $700 more. Is it worth the extra coin ?
Reply
Old Dec 2, 2012 | 02:59 PM
  #10  
Sales@Tick's Avatar
FormerVendor
iTrader: (3)
 
Joined: Feb 2012
Posts: 7,480
Likes: 18
From: Mount Airy, NC
Default

Originally Posted by 02sleeperz28
What did the setup consist of?
For what it's worth my 98 SS with a stock bottom end 5.7, 241 heads@10.33:1 compression, 227/224 .578"/.563" 114+2 cam, PT7675@15-16psi, LS6 intake, stock TB, 4L80E, 3.55 rear gears and a 3800 stall went 6.47@113mph in the 1/8th@3900lbs+.

To go that MPH in the 1/8th at that weight is 700rwhp+ and more like 750rwhp. It still had a lot left in it and would of probably went 116mph with 20psi which would of probably been all it had to give. Best 60' was 1.47 on that pass. If I could guess 20psi would of been well over 800rwhp and probably closer to 825-850rwhp.

I also never turned this set-up higher than 6100-6200rpm and now that I have experience with making a lot of power with these stock bottom ends, I would feel comfortable spinning it 6600rpm where that cam would of peaked and wanted to be shifted at. Would of been worth some more E.T. and mph if I had. It's not that hard to make these set-ups go fast, just takes some planning and seat time once it's built.
Reply
Old Dec 2, 2012 | 05:23 PM
  #11  
02LS1ram's Avatar
TECH Enthusiast
iTrader: (17)
 
Joined: Apr 2008
Posts: 579
Likes: 0
From: Lehigh Valley ,PA
Default

Originally Posted by Martin@Tick
For what it's worth my 98 SS with a stock bottom end 5.7, 241 heads@10.33:1 compression, 227/224 .578"/.563" 114+2 cam, PT7675@15-16psi, LS6 intake, stock TB, 4L80E, 3.55 rear gears and a 3800 stall went 6.47@113mph in the 1/8th@3900lbs+.

To go that MPH in the 1/8th at that weight is 700rwhp+ and more like 750rwhp. It still had a lot left in it and would of probably went 116mph with 20psi which would of probably been all it had to give. Best 60' was 1.47 on that pass. If I could guess 20psi would of been well over 800rwhp and probably closer to 825-850rwhp.

I also never turned this set-up higher than 6100-6200rpm and now that I have experience with making a lot of power with these stock bottom ends, I would feel comfortable spinning it 6600rpm where that cam would of peaked and wanted to be shifted at. Would of been worth some more E.T. and mph if I had. It's not that hard to make these set-ups go fast, just takes some planning and seat time once it's built.

Not to thread jack or anything, how long did the motor stay together at that power lever?
Reply
Old Dec 2, 2012 | 06:08 PM
  #12  
fastcars95's Avatar
Thread Starter
TECH Regular
iTrader: (9)
 
Joined: Apr 2008
Posts: 431
Likes: 1
From: Ontario
Default

Dont worry about that. I like to know too.
Still not sure about paying the extra $700 for the BB CEA version
Reply
Old Dec 2, 2012 | 06:49 PM
  #13  
L-EATER's Avatar
11 Second Truck Club
iTrader: (2)
 
Joined: Jan 2002
Posts: 1,412
Likes: 0
From: Missouri
Default

I have the older GTS with a billet wheel/journal bearing on a 370. It makes 690-700 RWHP at 15psi. I turned it up to 17psi and it made 743 RWHP but the fuel system was done so I turned it back down and havent made any changes since. Not sure how much more power the turbo has in it but this is through a 4l80e and a 14 bolt truck rearend.
Reply
Old Dec 2, 2012 | 07:56 PM
  #14  
LS1NOVA's Avatar
TECH Addict
iTrader: (12)
 
Joined: Nov 2002
Posts: 2,269
Likes: 12
From: Minneapolis,MN
Default

Well since we have a nice little 7675 results thread going on here I'll add. My 5.3 with a 224/228 cam and a 7675CEA made 717whp on 17lbs through an unlocked 4L80E and LS1 intake. Trapped 141 in a 3500lb car with 23lbs after the 1/8th. Ported heads,better cam, and a LS2/90, and 25lbs hopefully equals a bunch more power this spring.
Reply
Old Dec 2, 2012 | 09:51 PM
  #15  
Sales@Tick's Avatar
FormerVendor
iTrader: (3)
 
Joined: Feb 2012
Posts: 7,480
Likes: 18
From: Mount Airy, NC
Default

Originally Posted by 02LS1ram
Not to thread jack or anything, how long did the motor stay together at that power lever?
It never popped. It's still together sitting in a shop in KY somewhere

I was too chicken to run it in the 1/4 afraid it would blow it's load so I just ran it in the 1/8th as hard as I could.

Mine was a cast wheel BTW....

Video of a high 6 second pass on 10lbs of boost:

http://youtu.be/OQd4D4He_pQ?t=48s

It being as heavy as it was it took a while to get the timing dialed in where I thought it was still safe for the fuel/boost I was running and still getting it down the track in the first 330' as quickly as possible. It ran hard out the back, but until the last month I owned it I was too chicken **** to really turn the timing up down low and get it run a number hence why no videos of the 6.47 pass. It would run 6.60's@112 all day long though with a mild tune-up.
Reply
Old Dec 2, 2012 | 10:43 PM
  #16  
Texhotrod593's Avatar
TECH Apprentice
iTrader: (7)
 
Joined: Mar 2007
Posts: 374
Likes: 0
From: texas
Default

Originally Posted by fastcars95
Is there a big difference between the ball bearing Billet wheel unit and the older cast wheel with a journal bearing.
I found a deal on a brand new Ball bearing billet wheel unit but the cost is much more then the GTS I'm looking at. Almost $700 more. Is it worth the extra coin ?
Nope not really worth it in my opinion. Cast wheel or billet etc on a 7675 will make plenty of power. On a 5.3-5.7 that piece will make(max) somewhere in the 900-1000rwhp range if the setup is right. in the 6.0 sizes it will work in beast mode but might not quite make that power before the turbo maxes out. You should be no problem maxing past 800rwhp with your setup. Make sure the tune is spot on
Reply
Old Dec 3, 2012 | 09:17 AM
  #17  
skinnies's Avatar
10 Second Club
20 Year Member
iTrader: (33)
 
Joined: Jul 2004
Posts: 2,431
Likes: 4
From: KS
Default

We've done 850+ rwhp on two jy 5.3 setups with the billet 7675, I'm sure one is over 900rwhp now also, just haven't dyno it again with it turned up.
Reply
Old Dec 3, 2012 | 10:23 AM
  #18  
pwrtrip75's Avatar
TECH Addict
20 Year Member
Liked
iTrader: (8)
 
Joined: Jan 2004
Posts: 2,386
Likes: 9
From: Janesville, WI
Default

Originally Posted by fastcars95
I'm looking at a 76gts turbo. Is it the same as the current PTE 76/75?
If not what are the differences. I've heard nothing but good things about the 76/75.
Can anyone recommend anything else I should look at. I need something that will make 800whp on my LQ9 with a T56
I had one on my 370 (9.8:1) with a TU1 cam, insta-spool and will easily get you that power. Probably be great for a 6 speed car.
Reply
Old Dec 3, 2012 | 07:58 PM
  #19  
fastcars95's Avatar
Thread Starter
TECH Regular
iTrader: (9)
 
Joined: Apr 2008
Posts: 431
Likes: 1
From: Ontario
Default

I got a smoking deal on the billet ball bearing version. Time to turn up the boost and see what she can do.
Reply
Old Dec 3, 2012 | 08:15 PM
  #20  
SSZ's Avatar
SSZ
TECH Fanatic
 
Joined: Aug 2005
Posts: 1,004
Likes: 0
Default

Private purchase or did you get it from a dealer? Nice score.
Reply



All times are GMT -5. The time now is 03:46 PM.

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