LS T56 Hydraulics Modified vs. stock

[almcbri]

I am reading various websites about t56 hydraulics being modified. What is modified on the LS1 T56 throwout bearing and the LS1 T56 hydraulics to work in a first gen camaro?

From what I have gathered the install apears to be pretty straight forward.

[almcbri]

bump :lateral:

[Mkelcy]

I am reading various websites about t56 hydraulics being modified. What is modified on the LS1 T56 throwout bearing and the LS1 T56 hydraulics to work in a first gen camaro?

From what I have gathered the install apears to be pretty straight forward.

The only modification to stock parts I'm aware of is the "drill mod" and it's not specific to first gens - it improves the operation of the hydraulics in stock applications as well. Essentially, the ID of the factory hose is too small, allowing the system to pump up with rapid shifting. The drill mod increases the flow, preventing pump up. Take a look here, it's got the full description of how to do it on a stock car, but along around step 18 or so they get to the drill mod itself: http://www.installuniversity.com/install_university/installu_pages/sophomore_year/drill_master_cylinder.htm

[Z06vette]

So far the only thing I have modified is the rod length of the 4th gem clutch master. ATS made a firewall bracket & offered a shorter rod to replaced the factory rod. The factory rod is crimped on to the clutch master rod. I used a dremel to relieve the crimps & remove the original end. Simply slide the ATS rod end on and weld it in place. I have mocked it up & everything looks like it is going to work. I had to slightly enlarge the firewall opening from the original 4 spd hole. I bolted the bracket on the firewall without the clutch master in it, then traced its shape on the firewall. The only thing I have not figured out is how to cover the opening. The old clutch rod had a rubber boot that attached to the firewall with 2 screws. That wont really work with the new shaped opening that I cut out. Still working on that. Scott

[ErikLS2]

So far the only thing I have modified is the rod length of the 4th gem clutch master. ATS made a firewall bracket & offered a shorter rod to replaced the factory rod. The factory rod is crimped on to the clutch master rod. I used a dremel to relieve the crimps & remove the original end. Simply slide the ATS rod end on and weld it in place. I have mocked it up & everything looks like it is going to work. I had to slightly enlarge the firewall opening from the original 4 spd hole. I bolted the bracket on the firewall without the clutch master in it, then traced its shape on the firewall. The only thing I have not figured out is how to cover the opening. The old clutch rod had a rubber boot that attached to the firewall with 2 screws. That wont really work with the new shaped opening that I cut out. Still working on that. Scott


I'm workin on this very same thing at the moment and what I did about the whole is use a round body plug that you see all over the underside of most uni-body cars. I actually had some in my tool box and one just happens to fit perfectly in the hole I drilled in the firewall. Now I just have to cut a hole in it the right diameter and maybe a little strip caulk around it and it'll be sealed to the body of the clutch master cylinder.

I had also thought of filling the area between the bracket and the firewall with something made out of sheet metal that could have a seal attached to the edge that would press up against the firewall when the bracket was installed. Unfortunately, the little hump from the hole for the speedo cable (which I wont be using anyway but already is painted) would have made it a little more tricky so I just went the other way above.

If I had to do it over again, I would have gotten the bracket earlier and welded it into the firewall. Then the gasket on the mast cyl. would have sealed it just fine.