I was just wondering, if I were to swap out my t-5 for a t-56, would I need the T56 sealed master/slave cylinder? And also, would I need to change my flywheel to fit the t-56 clutch assembly or will my old flywheel work fine?

 

Yes you need the slave cyl.

Yes you need the right flywheel. The T-5 one will not work. If you have a 2-piece rear main seal motor (as was stock in 84) you will have to have the $special$ adapter flywheel, forged from pure extra virgin singlesourceum.

 

The master and slave cylinders themselves are interchangable, but you have to have the braided steel pressure line from the 4th gen setup. You can make the steel line fit the 3rd gen parts with minor filing on the fittings, but it would be easier to just spend the $100 on a full LT1 hydro setup, sealed and pre-bled right out of the box. Then you don't have to worry about leaks or air in the lines....it's just bolt-it-on and go.

If you have a 2-piece RMS engine (like me) then sit down before you start searching for flywheel prices. Those 10,000 year old gnomes charge insane labor rates.

 

That was my next question. What if I get the ls1 t56, all the flywheels from jegs and such are for 93-97 t56 (like centerforce) that are for 2 piece rears. Will this work with a ls1 t56?

 

Don't even try to use an LS1 trans. Too much stuff has to be changed. By the time you get the right bellhousing, input shaft, etc. it'll be cheaper and easier to bite the bullet and buy the $400 golden flywheel so that the rest of the LT1 stuff will bolt in.


Since you already have the T-5, you might want to consider the aftermarket T56. It's set up to use the T-5 style clutch and bellhousing, but requires you to shorten the driveshaft and torque arm by 2 inches. It's more expensive than your typical LT1 trans......but then again, your typical LT1 trans is used, and no one drives these cars nicely.

 

Wait wait wait, the ls1 t56 I'm looking at comes complete for the swap, except for the things I need to make the tranfer of course. But you're saying on top of that I'm gonna need a new bellhousing, input shaft, driveshaft, and flywheel???

 

The LS1 bellhousing will not bolt to anything that isn't an LS1 or LS1 derivative (like the 5.3 truck motors.) The input shaft is also different, and the front cover of the tranny case will have to be modified or changed because the mounting points for the hydraulic throwout bearing will interfere with a normal clutch linkage. You could try using the hydro-throwout, but you'll have to take real good measurements and possibly do some fab work to make sure the throwout will operate the clutch fully without overextending itself.....more of a PITA that it's worth IMHO. The driveshaft should work though.


The "complete swap package" is only complete if you're swapping an LS1 car from auto to 6-speed. It won't work for any other type of engine.

 

where did you get those i got my master and slave from kragen and they are not prebled at all and further they are rubber lines

 

Dealer....

Comes pre-assembled (slave, master, & reservoir), pre-bled, with the stainless steel braided pressure line.

 

Yep. Ordered mine from the local Chevy dealer....I think it was $110 or so after tax (almost 6 years ago.) Dal can probably get it cheaper than the local dealer...or maybe GMPartsDirect.

The line from the reservoir to the master is rubber, because it's not pressurized. The pressure line from the master to the slave is braided stainless.

 

I just gotta ask this question. If you can take a LS1 and bolt it to a 700r4, why cant you take an LS1 trans, and bolt it to a "regular" SBC?

 

You can't bolt a 700-R4 to an LS1. You can bolt a 4L60-E to it, if it has the correct LS1-style case, but that's as close as you can get.

 

Yes, yes you can. There are members on here who have. According to what is said, you cant put all the bell housing bolts in, one of them is different, but other than that, it works fine.

 

https://www.thirdgen.org/techbb2/sho...ight=LS1+700r4

There is one of the threads, I cant find the other one yet. Gotta love the . If you read this one, there is one guy there who actually did it, and in the other there were multiple people who have done it. Its no big deal about the last bolt either, its still solid.