Master cylinder for a T56?

[Old Nash]

I thought the reason I posted the p/n # for the 5 lug to 6 lug rotor was to buy that rotor and you would have 6 lug all around. I am changing to 14 bolt semi floater and is 6 lug.

I was just making a statement that a GTO shifter has the a 4' forward extending shifter arm from the base like the Mc Leod shifter. I think you need to look at picture of the GTO shifter Yellow Sierra has for sale.and GMM shifter arm. I never intended to use a GTO shifter but "USE" the Tremec T56 shifter and adapt a 4" forward extending shifter arm to it like the Goat. It may not extend shifter far enough forward for the bench seat, but the bucket seats I purchased will solve the problem if it does not.

[ccreddell]

Oh OK, I misunderstood your post on the shifter.

[Old Nash]

The 90's SS454 trucks had a 5 lug 14 bolt rear end and I would find a rear from one of those trucks if staying with 5 lug. The 14 bolt rear I am using is 6 lug and want same pattern on front. The 6 lug wheel/rims as you said gives more choices and easier to find.
The shifter arm will go froward 4" and then will be bent to resemble the shifters that came in the old 4 speed shifters that came in full size chevy cars from late 50' to 60's. They were bench seats (until buckets seats came out) and the shifter came up over seat if moved all way forward.
What year/model did you use when converting from 5 lug to 6 lug?

[ccreddell]

I havent yet done this swap, but Ive done a lot of research on it. That and I was a GM parts guy for quite a few years. I was just passing on the info and experience I had collected. If I recall, they changed the rotor thickness sometime around '91, but I believe that the 3/4T LD 6-lug rotors are all the same from 88-98. You will obviously want to verify this by checking whether the in/out bearing is the same for both. And if you are putting the thicker rotor on an earlier model you may have to upgrade your calipers to the post 91 model.

[Old Nash]

The rotors did change around that time and you are right about checking in/out bearing. You never can get too much info on something before starting project.

[90'rado]

It's not possible to know everything the first time around, no matter how much you research it. Sometimes you've got to stop theorizing and just jump in.

The rotors you'd want to use if you're converting a 2WD 5 lug to a 6 lug would be the C2500 front rotors.

I WAS planning on pulling the 6 lug front rotors off of a 4x4 parts truck that I have laying around, I discovered that wouldn't work however. Because:

The 2WD rotors have the lug-studs pressed in, while the 4WD rotors do not. I have the C2500 front rotors laying in my garage for whenver I can get around to swapping the front over, it looks like they will work, I just haven't had time to swap them, and I'm planning on getting some more use out of the front tires.

I have been looking around for wheels for a 88-98 C2500 (since that's what my truck will be "wheelwise" with the 14 bolt and front rotors both from the C2500), but, I haven't had much luck for some reason, I have no idea why? I've looked at summit, jegs etc.

I also discovered that the wheels from a 97 K1500 tahoe won't work b/c they have too much backspacing, the tire rubs just a hair on the leaf spring. My original plan was to use these factory alloys from the 'Hoe, but hey shit happens right?

[ccreddell]

I have been looking around for wheels for a 88-98 C2500 (since that's what my truck will be "wheelwise" with the 14 bolt and front rotors both from the C2500), but, I haven't had much luck for some reason, I have no idea why? I've looked at summit, jegs etc.

I also discovered that the wheels from a 97 K1500 tahoe won't work b/c they have too much backspacing, the tire rubs just a hair on the leaf spring. My original plan was to use these factory alloys from the 'Hoe, but hey shit happens right?

The reason I said that 6-lug wheels were plentiful is because everything (1/2T anyway) built since '99 uses a six lug wheel. Dont look for 2500 wheels, (theyre ugly anyway), just look for wheels off of a newer truck and youre golden. The offset on most of the factory alloys is such that they usually tuck really well too.

Oh, and if you really want to use the Hoe ones, just use a small spacer.