Need some help???
Thread Starter
Burning Brakes
Joined: Jul 2006
Posts: 943
Likes: 3
From: Chicago IL
Need some help???
I got my stock '95 Corvette and I was thinking about doing a few simple upgrades. I did have a couple questions however. I was thinking of adding a new throttle body. What is the best to use with a stock set-up, a 58mm or 52mm? Also I would be adding a new mass flow sensor as well and possibly a cold air set-up as well. With adding these three things to a stock car, what additional tuning would have to be done if any?
I'm an old C3 guy so this is all new to me. Thanks for the help!
I'm an old C3 guy so this is all new to me. Thanks for the help!
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
I got my stock '95 Corvette and I was thinking about doing a few simple upgrades. I did have a couple questions however. I was thinking of adding a new throttle body. What is the best to use with a stock set-up, a 58mm or 52mm? Also I would be adding a new mass flow sensor as well and possibly a cold air set-up as well. With adding these three things to a stock car, what additional tuning would have to be done if any?
I'm an old C3 guy so this is all new to me. Thanks for the help!
I'm an old C3 guy so this is all new to me. Thanks for the help!
You didn't say what transmission you have but if it is an A4, lower rear gears give the best bang for the buck when it comes to seat of the pants improvement.
Safety Car
Joined: Dec 2007
Posts: 3,616
Likes: 5
From: Sandhills of North Carolina
I did this (2.59 down to 3.07) to my '96 and it is a totally different car. I also put in a higher stall converter (2800) at the same time I did the gear swap. The cut lid on the air filter is a cheap and easy mod. Unless you are planning some engine mods down the road you're wasting your money on a larger TB. Get some TB cleaner and clean up the OE unit. Take it apart and clean up the inside good. This can add a little pep to the engine and improve idle quality. Enjoy your '95!
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
First verify what ratio you have now by checking RPO codes, on the label under the center console. (The Technical Summary at the top of this section has a lot of information to help)
If you have the stock 2.59 set up, the 3.07 performance ratio makes a nice improvement as Mike said. If you already have the performance gears, consider 3.54, some guys even like 3.73, but for me they were too steep on the freeway.
A higher stall converter complements the gears, again as Mike pointed out.
If you have the stock 2.59 set up, the 3.07 performance ratio makes a nice improvement as Mike said. If you already have the performance gears, consider 3.54, some guys even like 3.73, but for me they were too steep on the freeway.
A higher stall converter complements the gears, again as Mike pointed out.
Thread Starter
Burning Brakes
Joined: Jul 2006
Posts: 943
Likes: 3
From: Chicago IL
First verify what ratio you have now by checking RPO codes, on the label under the center console. (The Technical Summary at the top of this section has a lot of information to help)
If you have the stock 2.59 set up, the 3.07 performance ratio makes a nice improvement as Mike said. If you already have the performance gears, consider 3.54, some guys even like 3.73, but for me they were too steep on the freeway.
A higher stall converter complements the gears, again as Mike pointed out.
If you have the stock 2.59 set up, the 3.07 performance ratio makes a nice improvement as Mike said. If you already have the performance gears, consider 3.54, some guys even like 3.73, but for me they were too steep on the freeway.
A higher stall converter complements the gears, again as Mike pointed out.
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Since you have 3.07's you have a 3 series carrier and can use a standard thickness ring and pinon set in your existing D36 rear end. My 93 has good launch and is still not obnoxious on the freeway, my previous 3.73's were a little too steep for my taste at freeway speeds.
Thread Starter
Burning Brakes
Joined: Jul 2006
Posts: 943
Likes: 3
From: Chicago IL
I have 3.45's in my 93, but the ratio is not available unless you change to the D44 rear axle that comes standard in manual cars, 3.54 is a comparable D36 ratio that is very similar.
Since you have 3.07's you have a 3 series carrier and can use a standard thickness ring and pinon set in your existing D36 rear end. My 93 has good launch and is still not obnoxious on the freeway, my previous 3.73's were a little too steep for my taste at freeway speeds.
Since you have 3.07's you have a 3 series carrier and can use a standard thickness ring and pinon set in your existing D36 rear end. My 93 has good launch and is still not obnoxious on the freeway, my previous 3.73's were a little too steep for my taste at freeway speeds.
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Burning Brakes
Joined: Dec 2007
Posts: 1,068
Likes: 6
Excellent Advice! I cut the stock filter lid and added K&N...This mod was budget friendly!