C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Performance Mods-95 LT1

Thread Tools
 
Search this Thread
 
Old Jun 7, 2007 | 10:45 PM
  #1  
ebusa's Avatar
ebusa
Thread Starter
Advanced
 
Joined: May 2007
Posts: 66
Likes: 0
From: Snohomish WA
Default Performance Mods-95 LT1

Hi All,

I've read multpile threads but still can't decide on my next performance mod. Any suggestions??

1995 LT1 A4 (47k miles)
3.07 gears
Cut Lid/w K&N filter
Throttle body bi-pass
Magnaflow Catback Stainless Mufflers #15623 on thier way (should be here next week!)

Here's what I am considering for my next mods:

Shorty Headers?
2500 stall converter? Will there be any benifit to this without change gears?

I really don't want to open up the motor, just want to add basic bolt on's.

My local corvette shop quoted me about $1300 to have my gears/bearing changed. Does that sound about right? They also mentioned as long I dont race it all the time there is no need for a Trans cooler...

Thanks!
Reply
Old Jun 8, 2007 | 01:36 AM
  #2  
Jonnymac's Avatar
Jonnymac
Melting Slicks
15 Year Member
 
Joined: Oct 2005
Posts: 3,178
Likes: 5
From: Daleville Indiana
St. Jude Donor '08
Default

$12-1300 is what I've seen on here. You can save money by removing the rear your self or try to find a D44 to swap in for about the same price. 3.45s will give you the best performance feel. LT are better then shorty's for top end HP. 1.6 or 1.7 RR with CC 918 springs and then a PCMFORLESS tune.
Reply
Old Jun 8, 2007 | 02:58 AM
  #3  
sami85L98's Avatar
sami85L98
Le Mans Master
 
Joined: Apr 2005
Posts: 8,077
Likes: 4
From: Scarborough ONTARIO
Default

R u sure u have 3.07 gears, as far as i know pretty much LT1/4 auto came with 2.59 gears.
Reply
Old Jun 8, 2007 | 03:04 AM
  #4  
shortcut96's Avatar
shortcut96
Instructor
10 Year Member
 
Joined: Dec 2005
Posts: 164
Likes: 0
From: Cleveland Tennessee
Default

Originally Posted by ebusa
Hi All,

I've read multpile threads but still can't decide on my next performance mod. Any suggestions??

1995 LT1 A4 (47k miles)
3.07 gears
Cut Lid/w K&N filter
Throttle body bi-pass
Magnaflow Catback Stainless Mufflers #15623 on thier way (should be here next week!)

Here's what I am considering for my next mods:

Shorty Headers?
2500 stall converter? Will there be any benifit to this without change gears?

I really don't want to open up the motor, just want to add basic bolt on's.

My local corvette shop quoted me about $1300 to have my gears/bearing changed. Does that sound about right? They also mentioned as long I dont race it all the time there is no need for a Trans cooler...

Thanks!
Go with the lt's over the shortys...

To me thats a little to much stall esp. if you run at the track if you hook hard off the line your stock rear will go

Trans cooler is great add-on whether you race or not... For less than100 buck's you can get everything you need and that could save you some $$ in the long run...
Reply
Old Jun 8, 2007 | 03:21 AM
  #5  
STL94LT1's Avatar
STL94LT1
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Default

Originally Posted by sami85L98
R u sure u have 3.07 gears, as far as i know pretty much LT1/4 auto came with 2.59 gears.
3.07 was available as a performance option on LT1's, no LT4 autos.

Oh, I paid $300 for my gears and $350 for a turn-key install.
Reply
Old Jun 8, 2007 | 06:13 AM
  #6  
96 lt-4's Avatar
96 lt-4
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2005
Posts: 1,915
Likes: 48
From: Angier nc
Default

with what you have i would go with the stall next.i think it will give you the best bang for the buck.
i idi'nt notice a huge gain going to longtubes.sure they looked nicer and sounded better but it did'nt make it a whole lot quicker.
i would recommend a trans cooler with a stall.think about it,you are spending a fair amount of coin to increase performance but you don't want to install a $75 piece that will take care of the extra heat it generates.heat kills transmissions.
do it right once or do it twice,the choice is yours.
Reply
Old Jun 8, 2007 | 08:35 AM
  #7  
ebusa's Avatar
ebusa
Thread Starter
Advanced
 
Joined: May 2007
Posts: 66
Likes: 0
From: Snohomish WA
Default

Thanks for the reply's! I've check the codes and I do have the Performance axle and 3.07 gearing.

I also have the ride control, witch I normally leave on Tour. Haven't tried selecting sport or performance.
Reply
Old Jun 8, 2007 | 10:21 AM
  #8  
rickneworleansla's Avatar
rickneworleansla
Le Mans Master
15 Year Member
 
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
Default

Originally Posted by ebusa
Thanks for the reply's! I've check the codes and I do have the Performance axle and 3.07 gearing.

I also have the ride control, witch I normally leave on Tour. Haven't tried selecting sport or performance.
My 95 also has the 3.07 option.

I have a 2800 stall which isn't bad but you need DR's or a sticky tire for the track to take advantage of it or it would be a waste of money. You can forget about ever flooring it in wet weather. You will have zero traction from a dead stop and you could easily wreck. If you want big power go with nitrous, heads/cam, or forced induction. If you are looking for bolt on's with smaller gains do Long Tube headers, 1.6rr, shift kit, and a PCM tune. Mine's a daily driver so I'm happy with the 3.07 gears for now. For me I think it would be too much with the TC. If I had a track only car than maybe. If your going to do gears do it later with the Dana 44 swap. Install a trans cooler regardless of what the shop says. Mine was under $75 and they are easy to install. I've already had my trans rebuilt once and that was before the TC. The cooler will extend the life of the trans. I would even put one on an all stock car. My only regret with the TC is that I didn't go with a better brand that was built for nitrous. Everyone says TCI is no good but mine seems to be holding up very well so far.

Good Luck
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Jun 8, 2007 | 10:30 AM
  #9  
redcorvettedave's Avatar
redcorvettedave
Drifting
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2002
Posts: 1,305
Likes: 11
From: Savannah Ga.
Default

It depends on what you want to do next after this mod.
torque converter is only good for launching advantage....if you are going to add gears in the future with the TC the car would be a beast out of the hole and down the track. If you're not going to do any
heads/cam changes...the headers will not be the best bang for your buck.....Gears is what you really are asking for.

So here is what I suggest
D44 conversion...with 3.45 0r lower
tanny cooler! then torque converter down the line... Peace!
Reply
Old Jun 8, 2007 | 01:55 PM
  #10  
ebusa's Avatar
ebusa
Thread Starter
Advanced
 
Joined: May 2007
Posts: 66
Likes: 0
From: Snohomish WA
Default

Mind made up!!!

Gears and Trans cooler are next. Should I go with the 3.54's or the 3.73's?

With the following specs & mods is a 12sec 1/4 mile possibly reachable?

1995 LT1 A4 (47k miles)
3.54 gears
Cut Lid/w K&N filter
Throttle body bi-pass
Air Foil-hehe
IAT Relocate
Magnaflow Catback Stainless Mufflers #15623

Reply
Old Jun 8, 2007 | 08:30 PM
  #11  
redcorvettedave's Avatar
redcorvettedave
Drifting
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2002
Posts: 1,305
Likes: 11
From: Savannah Ga.
Default

I ran 3.54 for a year love them..but had traction issues on luanch
I ran 3.54 for two days with 2600 stall TC before the weak D36 exploded.
damn..damn..damn... but I have to say that last launch and hook was the bomb! also had to rebuilt tranny when I put on the TC because
runnig the 3.54s for two years without the tranny cooler burnt out the
trans!

here is what you are asking for.
3.54 or 3.73 without drag radials stop light launches must be done
cautiouslly ...some say Goodyear D3 tires offer great traction
this is ture because I now run them but never got the chance to
run with the 3.54..after reared blew I had to put the 3.07s back on
and I never got around to the D44 conversion thats why I stess you
do it right the first time and be done with it.

here is what you should look for

3.33 first option hard to find
3.45 good gear to have it's between the 3.33s and 3.54s
3.54 great gear but must run top of line street tires for traction!
don't forget the tranny cooler
in short anyone of the above gears will sevre you well
PEACE!

Oh yea ....with a good sub 2 second launch and some good
weather 12s want be a problem!

Last edited by redcorvettedave; Jun 8, 2007 at 08:37 PM.
Reply
Old Jun 8, 2007 | 08:52 PM
  #12  
mackeyred96's Avatar
mackeyred96
Team Owner
20 Year Member
 
Joined: Nov 1999
Posts: 32,782
Likes: 11
From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
Cruise-In VI Veteran
Cruise-In VII Veteran
Default

3.73
Reply
Old Jun 8, 2007 | 08:54 PM
  #13  
Ruff Rider's Avatar
Ruff Rider
Racer
 
Joined: Sep 2005
Posts: 484
Likes: 0
From: Redwood City CA
Default

Originally Posted by sami85L98
R u sure u have 3.07 gears, as far as i know pretty much LT1/4 auto came with 2.59 gears.
I have 3.07 in my 95 C4-A...But i'm moving down to a DANA 44 w/3.73
Reply
Old Jun 8, 2007 | 09:30 PM
  #14  
ebusa's Avatar
ebusa
Thread Starter
Advanced
 
Joined: May 2007
Posts: 66
Likes: 0
From: Snohomish WA
Default

Got the tires covered!! Got new Goodyear Eagle F1's just a few weeks ago. Now I just have to start looking for someone to do the gears!

I think I'm going to go 3.54's w/trans cooler. Don't think I'm going to do a stall converter.
Reply

Get notified of new replies

To Performance Mods-95 LT1





All times are GMT -4. The time now is 03:16 AM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE