I'm curious what you all are using for master and slave cylinders. Pricing things out at Discount Auto, I saw that the Raybestos master cylinder fits 1993-1995 AND 2001-2002, which happens to be the least expensive unit they sell. I've also read on LS1 boards that anyone replacing their 1998-2000 master cylinder should replace with a 2001-2002 unit for improved design or something.

I guess my question is what is it about the 1996-2000 master cylinders that is different from the 1993-1995 and 2001-2002 master cylinders? OR should I not waste money on an OEM part and just get an adjustable unit?

I guess I should also note that I'm swapping from an auto to a T56. I have thirdgen pedals as well as used thirdgen master and slave to help me mock it all up. Thanks for the help!

 

I'm not sure about the LS1 (1998 +) master cylender, but the only diffrance between the the 1984-1992 and the 1993-1997 was the dia. of the hole in the pushrod, you can use a 1984-1992 master cylender when doing the conversion and you don't have to change/modify your pedels, as you would if you used the 1993-1997 one. The slave cylender is completly identical, and if you whish to change that out use the breakware replacement one, as it is allumnium and will give you a better feel, also remember to drill out the line restriction in the clutch hyd. line, it will give you more accurate clutch action and a better "feel"

 

I've updated my original post with some more information. So the diameter of the hole in the pushrod is different between 84-92 and 93-97. Which one has the bigger hole? Could an 84-92 pushrod hole be drilled out to the size of the 93-97 to work optimally with my T56?

And can anyone chime in and say how the 1998-2002 master cylinder compares to the 1984-1992 and the 1993-1997 master cylinder? I'd like to know the differences in pushrod hole size (which most people on LS1 forums say when replacing masters to perform the 'drill mod' on a 2001-2002 master) and are they all interchangeable as far as mounting in the car? Do the brackets mount to the pedals differently? Thanks for the help

 

I just did the t56 swap in an 88 and used the 82-92 clutch master I had the 93-97 its exactly the same exept where it attaches to the pedal.The 82-92 has a plastic clip that snaps into the hole in the pedal. The clip doesnt fit the 93-97.I dont have a slave cylinder I used the 06' GTO hydrolic thowout bearing and had a braided stainless hose made to go from the master to the bearing

 

i prefer the mcleod master cyl.....

in anycase, it really doesnt matter, they'll all work.
just get the correct slave cyl for your application, drill out the LINE (drill mod is on the line, not the pedal area or master cyl..) and go from there....

 

I know for a fact that the 93-97 style master cylinder will work just fine with a thirdgen. The 98 and newer has a totally different line and slave cylinder, so I don't think I'd even bother with one of those units. Also, the clip that was mentioned on the 93-97 style master cylinder is a lot better design than the thirdgen style that just snaps onto the pedal stud. I looked at my thirdgen pedals, and the slot is already there in the pedal stud to use the clip that comes with the 93-97 style, so I'm going to use that setup on mine. I've read several posts where guys have broken the plastic snap on style that came stock in the thirdgens. The 93-97 style has a nylon bushing in the pushrod hole instead of the brittle plastic clip/bushing, which isn't prone to breakage. I also used the 93-97 braided steel line with an aluminum thirdgen slave cylinder. Check out my post titled "ultimate hyd. clutch linkage bargain style".

 

my origanal master cylender diden't have a plastic clip on it at all, it had a small plastic bushing and used a meatel clip similar to the one on my break pedel, it's only when I had to replace it that I ran into the plastic bushing/clip combo, which I use now but I don't fully trust, did anybody ells have the meatel clip origanally?

 

very cool Pat, I have cut the hole for mine and got my 3rdgen brake and clutch pedals in place but haven't gone any further with the swap. I'm waiting til my friend can help me out with it in the shop he works in. I got a new 93-97 master and slave and still have old 3rdgen ones with the hoses attached, but I should probably go get the braided lines version off a 93-97 model for my swap. and yes I had read your 'ultimate...' setup post... thanks for the info =)