my dad wanted to do a T56 in his '66 gto, but then read that you have to cut and clearance the trans tunnel. he doesnt want to do that, nor do i want to let him do that to that car.

i read something about smaller bodied aftermarket T56, magnum t56? or some kind of tko600 that was used in a 70 camaro swap.

anyone have some experience with putting a banger in a-body without floor modifications? and let me clarify, i dont want to use a 4-speed...im looking for something with atleast 1 overdrive gear

 

Richmond 5 or 6 speed will fit without mods.
TKOs generally need the tunnel cut.
I went a different rout, a T10 4 speed with 3.42 1st gear and a 2.73 rear. Almost like OD. Might even swap out for a 2.56 rear.

 

I went with a T-56 from D&D performance for my 67 GS400. I did have to modify the tunnel but it really wasnt that big of a deal. All you have to do is cut down the center of the tunnel and down to the floor at the fire wall. My brother and I had it done in an hour or so and it looks stock.

 

You can also gain more trans tunnel clearance by keeping the Engine low and forward. Standard or +1" forward mounts.

This might help get more clearance.. but will lead to a different set of issue to work around (oil pan, crossmember, front accessories, steering box, etc, some will a problem and some will not).

Many will use what the call the T-Cut to make a simple cut, spread and fill in to enlarge the tunnel where needed. BRP Hot Rod used this and had it in a web artical on there side in the past.

just a thought...

BC

 

hey what flywheel did ya use with the T10...sachs 1050?

 

Yes, although it's a 26 spline input so a standard LS1 flywheel/clutch would work too.

 

i'm asking cause i'm looking to put a 4spd behind a LQ9 in a 69camaro, i've done all the research, already have the sachs 1050 flywheel but was hesitant to use it due to it being so damn heavy..! although it's going to be 90% street car it'll still see 6500 regularly...is it a bad idea to use this flywheel above 5500 rpm...? I guess I need to get a steel bellhousing..

 

Interesting question, is a thicker, heavier flywhhel more or less likely to come apart?
But if I was dropping the clutch at 6500 rpm, I would definitely get a really good bellhousing.

 

I'm just wondering if the 65lb flywheel would have any i'll effects on some aggressive driving.? I probably won't be dumping the clutch at all really

 

26 lbs for the flywheel, 20 lbs for the pressure plate. Greater rotational mass equals a slower spool up. But coming out of the hole will be an advaantage. Flywheels store energy, so in drag racing the weight will be an advantage.

 

Have you consider the gear vendor under/overdrive with your 4 speed trans?