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Common 4th Gen Problems

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Old 03-04-2006, 08:40 AM
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Re: Common Problems

Originally Posted by Jeremy95TA
93-95 had single cats. 96-97 had dual cats and were rated at 285hp out of the factory instead of 275 for 93-97.
I think you mean "instead of 275 for 93-95."

Also, 93 6-speeds came with an M-29 tranny and not a T-56 like 94-02. Just a bit of random infor for you.
93-02 6-speed manuals are all T56's. The 93 used either of two unique versions of the T56. They had no "skip shift" feature, and they had a wider range of gear ratios, starting with either a 3.36 1st gear and 2.73 rear axle ratio on the M28, and 2.97 1st gear and 3.23 rear axle on the M29. "M29" and "M28" are simply RPO codes for the T56. The 94 and up T56's had a 2.66 1st gear, 3.42 rear axle ratio, and were RPO "MN6".

Just a bit of random info for you.....
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Old 03-04-2006, 09:37 AM
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Re: Common 4th Gen Problems

oops, I thought 95 was the year for dual cats. Sorry about that.

I bought my car with 179,000 miles and it has 182 now. It has never been rebuilt and has stock everything except for a few minor things like FPR, fuel filter and other minor new things. It still hauls, and has plenty of power.
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Old 03-04-2006, 04:17 PM
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Smile Re: Common 4th Gen Problems

Yea, Well what is the strongest T-56/M6 tranny, and i plan on keeping this car for awhile. So when i go to buy one in the future i have to check the t-tops. Do they all have T-tops? Whats the difference between the 96 Z28 and SS. So 95 is one of the best years because it has 1 cat? Well anything else you guys can think of please post.... and i want to thank all of you guys allready for this information.
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Old 03-04-2006, 04:41 PM
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Re: Common 4th Gen Problems

Originally Posted by pitbull14218
So 95 is one of the best years because it has 1 cat?
No, 2 cats gave more power. 95 is better because it is OBD1 (easier to tune), and has a vented optispark (more resistant to moisture). The SS camaros have better suspension like springs and swaybars. There's more to SS's I just can't think of much right now.
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Old 03-04-2006, 04:47 PM
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Re: Common 4th Gen Problems

The first Year the brought back the SS was 96? So 95 seems to be one of the best years to get... I can't afford a 98 and newer one so 95 would be good? How durable are the Valve Springs and other valve train... Because i am not going to go crazy right away but exhaust a cam maybe intake would be pretty cool for me to do. The springs could be a problem though? Along with the mileage?
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Old 03-04-2006, 04:51 PM
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Re: Common 4th Gen Problems

SS has thicker sway bars, lower and slightly stiffer springs, a functional ram air hood with a different cold air intake setup, a different spoiler, and unique 17" wheels. They could also be optioned with a less restrictive stainless steel exhuast and Bilstein shocks. IMO, if you're concerned at all about money, don't even waste your time looking for an SS. They're awesome cars, don't get me wrong. But for a long time, I was set on getting an SS, but evenutally decided on a Z because an SS will almost definitely cost you $5-6,000 more than a Z28 in the same condition. I decided it wasn't worth that just to have those two letters on the side. Find a good clean Z (they are still out there, just have to look hard) and use the extra money to pay it off sooner, or mod it
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Old 03-04-2006, 05:18 PM
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Re: Common 4th Gen Problems

Yea i see. How strong are those T-56 Trannys? which year from 93-97 had the strongest? Thanks for all the info so far.
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Old 03-04-2006, 05:30 PM
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Re: Common 4th Gen Problems

They're plenty strong. The rearend will almost certainly fail before the tranny ever will. These are basically the same trannies used in the Vettes and Vipers for the past decade, I believe, so it can handle a Camaro. I don't think that there's any difference in the years at all, but I could be wrong there.
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Old 03-04-2006, 05:52 PM
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Re: Common 4th Gen Problems

Anyone put alot of HP threw one of these? I am sure someone did, but i mean how much did ya... and how much will make that rearend go? thx again
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Old 03-04-2006, 06:02 PM
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Re: Common 4th Gen Problems

I've read about 6-speed cars put down 800+ HP, but what was done to beef these up, I don't know. Bone stock can handle 500 without a sweat, I would think. As for the rearend, I've heard of them failing on cars with stock HP and drag slicks after only a couple launches. The 10-bolt is pretty crappy...
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Old 03-04-2006, 07:43 PM
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Question Re: Common 4th Gen Problems

Damn lol... well i won't have any slicks. Are they expensive to get a stronger Rearend?
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Old 03-04-2006, 11:16 PM
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Re: Common 4th Gen Problems

You might want to look over the 4th Gen FAQ for info:

http://www.f-body.org/faq/4/index.htm

Look here for posts from a member "Taner"... he has run deep in the 9's with his T56. Check on the "Drivetrain" forum for "rkrause".... he had a heavy convertible that was putting 800HP through a T56. A buddy of mine ran close to 800HP through a T56 in a 3,950# SS convertible.

GM/Borg-Warner rated the 93 M28 at 360 lb-ft, the M29 at 400 lb-ft, and the later models at 450 lb-ft.

The F-Body T56 is not the same as the Corvette T56. Up until 1996 the Corvette used the ZF 6-speed. In 1997, they switched to a T56, but it was totally different than the F-Body tranny, being integrated into the IRS rear axle/differential.

The Viper T56 has several significant differences, including stronger input and output shafts.

A 12-bolt or a 9-inch rear will run you $2,000-$2,600.

Last edited by Injuneer; 03-04-2006 at 11:19 PM.
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Old 03-05-2006, 04:04 AM
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Re: Common 4th Gen Problems

Originally Posted by pitbull14218
So when i go to buy one in the future i have to check the t-tops. Do they all have T-tops?
Yes make sure to check the t-tops for leaks when you take a look at some cars. Not all cars will have t-tops, do yourself a favor and get a t-top car! You will not regret it! Makes having a camaro that much more enjoyable. During the warmer months I had my t-tops off almost every day and I never had a need for my air conditioning.
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Old 03-05-2006, 08:59 AM
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Re: Common 4th Gen Problems

Originally Posted by Z28LT1_Just_Nasty
Yes make sure to check the t-tops for leaks when you take a look at some cars. Not all cars will have t-tops, do yourself a favor and get a t-top car! You will not regret it! Makes having a camaro that much more enjoyable. During the warmer months I had my t-tops off almost every day and I never had a need for my air conditioning.
I second that. T-tops are the most enjoyable thing that goes along with these cars. (besides just owning one )

I would strongly suggest looking for a 6 speed camaro/firebird, seeing as the 4L60E has a lot of issues like weird shifting, dying easily, and not being able to hold much power in stock form.
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Old 03-05-2006, 09:31 AM
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Re: Common 4th Gen Problems

93's had "Speed Density" instead of the MAF setup. Also as Injuner said, different T56... If you get a 93 get a M29 which came from the factory with 3.23's. They had nonvented optis and also the gauges are yellow. 93's had single cats
94's had MAF setups, they also had non vented optis. T56's came with 3.42's I have a 94 and love it, my opti has yet to "crap out" and I've got 134k and its still running strong. 94's had single cats
95's had an option for dual cats, I believe dual cat cars come with OBD2? This was the first year for vented optis.
96's had dual cats and OBD2. SS came back out.
97's the interior changed. Amber turnsignals in the rear taillights. Daytime Running Lights.

If you get a A4 make sure it's a 3.23 car. Check your glovebox.

GU2 - Axle Ratio 2.73, Rear
GU4 - Axle Ratio 3.08, Rear
GU5 - Axle Ratio 3.23, Rear
GU6 - Axle Ratio 3.42, Rear
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