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Old 02-21-2013, 03:50 AM
Don Meyer's Avatar
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which T5

I just bought a GM crate motor(260 hp) for my 65 Biscayne.

I currently am using a Muncie m20 behind the engine, but it needs a exta
gear.

There are lot of T5 versions out there....I need to know which one to purchase
& what changes I have to make to install it. I have read several articles on the T5, but am to the point of confusion as to which one to buy & how to install it.

Please help

Don
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Old 02-21-2013, 05:33 AM
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I bought one and put it in my 50 that's been about three years ago can't remember what year it was.I think there are some years that you don't won't. I think mine is a 1989 ? I really did not give you much help.
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Old 02-21-2013, 09:50 AM
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A T5 in that heavy car will break pretty quick if you abuse it any. The best ones are from the 3rd gen Camaro with the 305. These were never put behind anything larger than the 305 because they could not handle the torque of a larger engine. The S10 T5s from the 2.8 and 2.5 were much weaker than the V8 transmissions, so don't even consider one of them. The 4.3 transmission might be a little stronger. You should really look into one of the after market transmissions like the Tremec or some of the others that have just been released.
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Old 02-21-2013, 10:23 AM
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It is unfortunate but there are not a lot of choices for a manual unless you go aftermarket..most of the ones in the boneyards are just not up to the job in anything but a light car..Just my take..

Sam
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Old 02-21-2013, 11:05 AM
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There is an outfit called Rockland Gear that may be able to help you..

Sam
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Old 02-21-2013, 11:07 AM
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It's Rockland Standard Gear in NY.

G Force makes after market gear sets and cases for the T5 to make it stronger, but it's not cheap.
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Old 02-21-2013, 01:20 PM
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Thanks for the advice......I think I will try the Z28 t5 & see how it holds up.
I am now 74 & have slowed down quite a bit in my driving speed so maybe
it will hold up.

Can I use my current alum bell housing, clutch & flywheel & just replace the disc?

The only other option I am aware of is the t56 which I have heard would cost $3000
to install.

Thanks Don
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Old 02-21-2013, 01:46 PM
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The G-Force and AstroGear T-5 upgrades are gonna be $3k when it's all tallied up, and they are (usually) based on the Ford case pattern. If you can find a Z-28 T-5 with the 2.95 low, it should work. If not, Mustang T-5's are much cheaper and are just as strong. The front case pattern and input splines are different, but there are ways to make it fit. I have one of the rare Jeep bellhousings with the Chevy block pattern, Ford T-5 pattern, and straight-up mounting position instead of the 15 Camaro "roll".

Russ
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Old 02-21-2013, 01:50 PM
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Yes, you should be able to use your bellhousing and a 26 spline clutch disc. I haven't actually done that swap myself, but I think that is correct. You might find some usefull information here. http://www.thirdgen.org/techboard/tr...ns-drivetrain/
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Old 02-21-2013, 08:37 PM
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aluminum bell housing? Be careful.Why not spend the money for a tko 500? and a scattershield?
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Old 02-22-2013, 06:51 AM
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I can not find a used tko 500 or t56 which would I can afford. My wife is
watching......

Don
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Old 02-22-2013, 08:23 AM
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what about a gear vendors tailshaft over drive?
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Old 02-22-2013, 08:29 AM
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The problem with a just dunking a camaro T5 in is your shifter will come out at an angle towards your knee and there won't be a speedo drive. You really need a 'hybrid T5'.

This has the S-10 mainshaft (output) and tailhousing for the proper perpendicular shifter location and mechanical speedo drive. This would be coupled with the Camaro V8 internals for the 2.95 1st gear and the OD.

Other options:

GM 833OD. This is a 833 4speed with overdrive in the main case. Based off the mopar 833 4speed; this was used in chevy trucks back in the late 70s and early 80s. Came with a Hurst shifter. Make sure you get a GM one and not a Dodge

2.88 1st gear T10 or 2.98 1st gear (custom) Muncie ratio. These will fit in the same space your current M20 came out of. You'll have to change your axle ratio to a 3.08 or 3.23. Bonus: you can reuse your shifter, no modifying the floorpan etc and its still a 4 speed. If you have a 27 spline output on your muncie, you'll have to modify the driveshaft to run the late model T10 (32 spline).

You can also put the 2.98 1st gear muncie gearset in your current Muncie (assuming you have a case in good shape and it has a 1" countershaft)

Ive seen the 833 OD's for under 2 grand, modified T5's are in the $1500 neighborhood (contact Dave Reed "Reed0380" on here), and the 2.98 Muncie gearset will be $800-850 approx depending on options (available from me or any approved Auto Gear vendor - PM me for a list if you like).

Nate
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Old 02-22-2013, 09:07 AM
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Sorry, decided this should go to PM.
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Old 02-27-2013, 04:46 PM
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T-5 question

I have a 69 Camaro with a warmed up 350 in it. I put a T-5 out of an 87 Camaro in it with 3.42 rear gears. I had the original 69 bellhousing modified so the trans bolted to it and the shifter stood up like it should and used the original mechanical clutch linkage. There is certainly a lot of power when I stand on the gas pedal in 1st gear and in 5th the engine is turning about 1600 RPM at 55 and about 2000 RPM at 70.
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