okay, i've been searching all over and i haven't found what i need. how far should the rod on the clutch master for a ls1 t56 travel? as in how much should the rod still have left of travel with the clutch fully disengaged? i am suspecting that is my problem, i bled the clutch last night and i still cant get it to release. there might be another 3/4 of an inch or so i think i can get out of it if i move the attachment to the pedal down a little so it has more travel. anyone else had this, should i move the pin or do i just need to bleed it more? thanks,

 

Which pedal did you use?

I'm using 4th gen pedals in an '82. I don't know what all firewall changes occurred over the years, but I had to lengthen my rod in order to get full pedal travel, which also means full MC travel.

I could still use a little more travel and have considered trimming the internal stop, but I'll hold off on that for now.

 

https://www.thirdgen.org/forums/ltx-...h-gen-t56.html

 

How are you bleeding your hydraulics? I found that using a mityvac was the best way for me, it only took about 30 seconds to do it.

 

using the thirdgen pedals in a 91, with the master from the t56. i looked at both master cylinders side by side, and i couldn't see any difference at all. they looked identical, the size of the rod end hole was the only thing that was different. thats why i thought it'd bolt right up.

bleeding using a remote speedbleeder from lamonte. dont have a mityvac, and i guess i was hoping to avoid ordering one and waiting to get it here. not something i can just pick up in this town

 

are you making sure that you have a good solid stream coming out with no air once you think you are completely bled? make sure that you have fully shut the bleed valve prior to releasing the pedal, also need to make sure that the fill tank doesn't run dry. with the speed bleeder you should be able to do it without the vac fairly easily. generally you can tell you are getting good bleed as the color of the fluid will change from the old black to the new and as long as you don't re-suck in air it should work for you

 

7/8" min 15/16" max is the oem spec.

Verify this by using a black magic marker and mark the side of the piston of the master cyl. Pump the thing a bunch of times and the seal will wipe clean a section. Thats your total piston travel

 

went and messed with it a little again at lunch. i definitely have it bled, theres clean new fluid with no air whatsoever coming out of the bleeder. all the discussions on the board that i have found seem to indicate that putting the 4th gen peg on the 3rd gen pedal should make the 4th clutch master work. i just cannot get it to work. i guess tonight i will see if i can move the peg and get a little more travel. i'll measure it and see if its within spec, but i'm guessing it must not be or i'd be driving the car today.

 

i am at a loss now. i bled it a little more again, clean fluid with no air at all coming out. the travel on the master is just shy of an inch, so thats out too. now i am beginning to suspect theres something wrong with the clutch itself. not sure but maybe i did something on the assembly i wasnt supposed to. before i go with tearing the trans back out, anyone have any other thoughts? i am confident its bled and the pedal is ok. just doesn't want to release. help??

 

i have found a few discussions on ls1tech about a shim for the hydraulic slave. has anyone else found this to be an issue mating an f-body t56 to a truck motor? at this point i am expecting to tear it back apart to check the measurements. just wondering if anyone else has run into that as a problem?

 

You should just go buy an adjustable clutch master cylinder imo. I have a 5.3/T-56 combo with 4th gen pedals and an adjustable clutch master cylinder and it works perfect!

 

well, if someone chimed in and had the same issue i probably would, but thats a spendy piece to buy in hopes that it will fix the issue. if it didnt work i'd still be chasing down another problem with 340+ doewn the drain.

 

It was just a suggestion..... $340? that is pretty pricey, mine was about half that from Jegs.

http://www.jegs.com/i/Ram-Clutches/7...oductId=859334

 

BlueZee28 has the LQ4 tuck motor with the f-body T-56, he is also using 4th gen pedals and an adjustable clutch master cylinder, I would PM him.