T56 Information - First Generation Camaro Swap - Page 16 - Team Camaro Tech
Transmission & Driveline Transmissions and Differentials

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post #226 of 234 (permalink) Old Dec 27th, 19, 01:59 PM
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Re: T56 Information - First Generation Camaro Swap

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Originally Posted by EVL SS View Post
Is a new t56 magnum(not a LS model) and a 4:11 rear a good match or should I be closer to a 3:73 - 3:90 range? The tires according the the specs are 26.5" tall. Nitto 555's
4.11 with 26.5 tire - two Chevy Magnums listed

The Tuet-7477 6th gear is .63 and will run 70MPH at 2,300 RPM

The Tuet-8277 6th gear is .50 and will run 88MPH at 2,300 RPM

1968 Standard Coupe, LS1, T56
2007 Tahoe, Z71, Cold Air & Tune
2001 Silverado, Z71, TSP Cam, Cold Air & Tune
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post #227 of 234 (permalink) Old Dec 27th, 19, 02:06 PM
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Re: T56 Information - First Generation Camaro Swap

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Originally Posted by really_n0b0dy View Post
4.11 with 26.5 tire - two Chevy Magnums listed

The Tuet-7477 6th gear is .63 and will run 70MPH at 2,300 RPM

The Tuet-8277 6th gear is .50 and will run 88MPH at 2,300 RPM

The first choice Tuet-7477 with .63 sounds pretty good. Thanks! My highway cruise to work is short and I never really get over 70-75mph.


I just wonder if 1st gear would be really short?

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post #228 of 234 (permalink) Old Dec 27th, 19, 02:25 PM
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Re: T56 Information - First Generation Camaro Swap

You can find the ratios here: https://en.wikipedia.org/wiki/Borg-W...6_transmission

Here's an online tool to calculate your options:Gear Ratio Calculator

1968 Standard Coupe, LS1, T56
2007 Tahoe, Z71, Cold Air & Tune
2001 Silverado, Z71, TSP Cam, Cold Air & Tune
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post #229 of 234 (permalink) Old Dec 27th, 19, 08:10 PM
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Re: T56 Information - First Generation Camaro Swap

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Originally Posted by really_n0b0dy View Post
You can find the ratios here: https://en.wikipedia.org/wiki/Borg-W...6_transmission

Here's an online tool to calculate your options:Gear Ratio Calculator
Thanks, good information. I just wonder if anyone could tell me their experience with similar gearing and if 1st gear would be really short?

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post #230 of 234 (permalink) Old Dec 27th, 19, 10:12 PM
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Re: T56 Information - First Generation Camaro Swap

I had a T56 in my 72 Chevelle with 3.73's and 1st was useless. It reminded me of a granny gear, lol....
If I took off from a dead stop, it would seem like less than a second and I was shifting from 1st into 2nd.

Brett....
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1969 Code X-66 SS 396 - RS Conversion - TKO600 - 3.73 Posi - Paint Code 71-LeMans Blue
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post #231 of 234 (permalink) Old Dec 28th, 19, 12:48 AM Thread Starter
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Re: T56 Information - First Generation Camaro Swap

I had an Aftermarket T56 (2.97:1 first gear) with 4.11's and that was a short first gear - 12.2:1 overall gearing. I've had a 2.66:1 T56 in front of 4.11's (10.93:1 overall gearing - roughly the same as a wide ratio Muncie and 4.11s) and that was pretty decent, but with a lot of engine or a heavy foot, you need to be careful starting from a light. Now I've got a 2.66:1 T56 in front of 3.70s (9.86 overall gear ratio) and couldn't be happier. Anyone who thinks of this combination as a granny gear has never experienced a granny gear.

With a T56, I'd concentrate much more on 6th gear usability. An old school relatively high performance SBC/BBC won't be happy cruising at less than 2,000 RPM (plus or minus 100 RPM). An LSx will be happy down to about 1,400 RPM. My advice for a car meant to be a driver is to figure out what speed you think you'll be cruising at, where your engine is happy, and then back into the rear gear ratio.
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post #232 of 234 (permalink) Old Dec 28th, 19, 03:03 AM
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Re: T56 Information - First Generation Camaro Swap

The T56 I had was one I found locally from a guy for $750. Back then I had no knowledge of the different gear ratios and I must have gotten one that was just not compatible with what I wanted it for. Granny gear was just a colorful reference to how short it was.

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post #233 of 234 (permalink) Old Dec 28th, 19, 08:29 AM Thread Starter
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Re: T56 Information - First Generation Camaro Swap

Quote:
Originally Posted by Brettallen59 View Post
The T56 I had was one I found locally from a guy for $750. Back then I had no knowledge of the different gear ratios and I must have gotten one that was just not compatible with what I wanted it for. Granny gear was just a colorful reference to how short it was.

Brett....
LOL, I assumed as much. Some of the early LT1 T56s had 3.36:1 first gears. My 2.97 first with 4.11s was short. Granny gears are in the 6.5:1 range. Couple those ratios with a 4.11 or so rear in a truck and you have a true Granny gear. You would walk faster (almost) than the truck would move at redline in first - a little under 17MPH at 6,000RPM.
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post #234 of 234 (permalink) Old Dec 28th, 19, 08:30 AM
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Re: T56 Information - First Generation Camaro Swap

Quote:
Originally Posted by Mkelcy View Post
I had an Aftermarket T56 (2.97:1 first gear) with 4.11's and that was a short first gear - 12.2:1 overall gearing. I've had a 2.66:1 T56 in front of 4.11's (10.93:1 overall gearing - roughly the same as a wide ratio Muncie and 4.11s) and that was pretty decent, but with a lot of engine or a heavy foot, you need to be careful starting from a light. Now I've got a 2.66:1 T56 in front of 3.70s (9.86 overall gear ratio) and couldn't be happier. Anyone who thinks of this combination as a granny gear has never experienced a granny gear.

With a T56, I'd concentrate much more on 6th gear usability. An old school relatively high performance SBC/BBC won't be happy cruising at less than 2,000 RPM (plus or minus 100 RPM). An LSx will be happy down to about 1,400 RPM. My advice for a car meant to be a driver is to figure out what speed you think you'll be cruising at, where your engine is happy, and then back into the rear gear ratio.

Ok, thats good to know. I haven't picked up the tranny yet but, I will very soon. I have a 4 series reared with a 4:11 in it. I need to tear it down to inspect and rebuild it so, maybe I will re gear it.

I am running a 383 SBC and I won't be on the highway a lot. If I take my car to work, I am on the highway for less than 10min and normally do about 70-75mph max. This will be only 2-3 times a week at the most.

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