T56 swap? Deal or no deal?

[YellowMACH04]

I've been wanting to do a T56 swap in the Mach for a while now and a friend of mine told me he knows a guy selling one out of a 700hp Terminator. The guy told my buddy its a stock Cobra T56 with a 26 spline input shaft, a Spec stg 3+ clutch, aluminum flywheel and a driveshaft for $1500. I'm told he's getting some kind of built manual trans so I'm not sure if he's including the bell housing or not. Is it a good deal and what else would I need to complete the swap? I know I need some kind of U-joint for the rear end for the drive shaft to work, to extend some wiring for the reverse lights and possibly a bell housing. Is the linkage or clutch fork different?

[JaybTorchedMach]

That's a hell of a deal if it is still in good condition. By the time I was done with my t56 swap I was almost $3k in. You will also need a bellhousing, shifter and crossmember. The cable and fork are the same. I switched the pinion flange because it seemed more solid. If you don't want to open the rear diff, just use the old u-joint from the 3650 driveshaft.

[934vModFox]

I have $1900 in mine with a new clutch

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[YellowMACH04]

Originally Posted by JaybTorchedMach

That's a hell of a deal if it is still in good condition. By the time I was done with my t56 swap I was almost $3k in. You will also need a bellhousing, shifter and crossmember. The cable and fork are the same. I switched the pinion flange because it seemed more solid. If you don't want to open the rear diff, just use the old u-joint from the 3650 driveshaft.

I the 3650 u-joint will fit in the t56 driveshaft? So whats the difference between the two? I dont want to open the rear diff yet.

[626socalstang]

thats a nice deal, if you do get it I would still take it to get a trans shop to get it checked out and your drive shaft balanced. Thats what I did, I got new synchros, and my driveshaft rebalanced (it was way off) with reinforced u joints.

[YellowMACH04]

Originally Posted by 626socalstang

thats a nice deal, if you do get it I would still take it to get a trans shop to get it checked out and your drive shaft balanced. Thats what I did, I got new synchros, and my driveshaft rebalanced (it was way off) with reinforced u joints.

^good idea. What did they charge you?

[JaybTorchedMach]

Originally Posted by YellowMACH04

I the 3650 u-joint will fit in the t56 driveshaft? So whats the difference between the two? I dont want to open the rear diff yet.

Sorry, I miss-typed. If you go that route, you need a hybrid u-joint but use the 3650 flange (which is what I meant to say). The Cobra uses a 1350 joint and the Mach 1330 if I recall correctly. The flange on the cobra is also bigger so the bolts won't line up to the pinion flange on the Mach diff.

[mach1of03]

Napa part number on the box ( 240-0448 ) you only need one for the rear

[626socalstang]

Originally Posted by YellowMACH04

^good idea. What did they charge you?

The driveshaft work cost me $192

[YellowMACH04]

will I need to extend some wires for the speedo and reverse or do I need to get new sensors?

[JaybTorchedMach]

No wires needed to be extended. The reverse lockout you will need to buy a GM pigtail for and wire it yourself, most common is to the brake. The Mach ECU doesn't control the lockout like the Cobra.

[YellowMACH04]

was just updated: trans has 58K on it, never rebuilt other then input shaft and is supposed to shift like new

[626socalstang]

Depending on how you drive your car, you might want to get it viper spec'd, mine came viper'd I called a trans shop to see what the kit goes for and they quoted me $1600 installed.

[JaybTorchedMach]

The T56 is a solid transmission. The 10-spline is usually what goes on them so you should be fine. For peace of mind get someone to inspect it.