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Discussion Starter #1
I am contemplating a T5 transplant into my 66. Currently I have 2.80 highway gears but I would like to put in a 3.55 gearset at the same time as the T5. Most of the 3.55 3rd members I am finding are open gearsets. Am I just asking for alot of wheel spin with a lower open gear? Right now the engine is stock but that will change in the future. Any comments?

Thanks
 

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T5 into a 3.55 will not give you much improvement on milage. I don't know what the 5th gear ratio is, but let's say it is .79. then the final drive ratio would be 2.80! You can always go get a posi unit to install your gears. I installed an Auburn unit about 2 years ago, and really like it.

Good luck...



Steve Leslie, 65 coupe in restoration. 302, toploader, A/C, disc brakes, bench seat

http://albums.photopoint.com/j/View?u=1571478&a=12409371&p=45488890.jpg
 

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Same here.. I have the T-5 with 3.55 and the auburn unit.. sweet deal..It cost extra but worth it.. the only draw back is with the 3.55 gears you have to shift out of first quickly..

http://albums.photopoint.com/j/View?u=1582904&a=12044467&p=43545944.jpg
Chris Hunter
65 A-Code Convertible
 

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Discussion Starter #4
Do you have any suggestions on where to look for the best price on an Auburn Pro unit? A quick web search turned up one place that quotes $468 but I am unsure if that is a good price.
 
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I dont' know what kind of power you're making, but trying to run open 3.55's in my Cleveland is just ridiculous. That poor right rear tire spins all the dang time. I can't afford the locker just yet so I'm putting the 2.xx's back in till then.

http://albums.photopoint.com/j/View?u=1617246&a=12411361&p=45146549.jpg

1970 Fastback, 4V 351C, various colors with black interior
 

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The T-5 fifth is .68. Which works out to an effective 2.41 instead of a 3.55. My 3.00 will be effectively a 2.04. Should be good for high speed runs - huh? At least until I upgrade to a 3.55 limited slip unit.



Keith

64 1/2 coupe built around April 30, 1964
was a 260 3-speed becoming a 5.0 5-speed.
 
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I did the T-5 plus 3.55 conversion you're talking about last fall. I got the T-5 version with the 3.35 first gear. With that low a tranny gear, the 3.55 rear end is too low for me- it's too buzzy in first. I'm going to go to a 3.00 or 3.2 rear end. If you want the 3.55's, I recommend you get the T-5 with the 2.95 first. The disadvantage there is that you don't get much lower cruize rpm.

Gene Zierdt
'65 Conv.
302/roller cam/valves/ported
T-5 w/3.55
negative roll, progressive front, 4 1/2 rear springs
Front & rear anti-sway bars
 
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