Chuzie's '77 Project

[chuzie]

So for today I did some backtracking. Why? Well because I completely forgot to accomplish some of the upgrade mods that are typical on a C4 rebuild. Last night I assembled the High/Rev pack and forgot 2 important things. 1.) Install a 5th friction plate instead of the stock 4 and 2.) drill some holes in the drum for faster oil evacuation.


Here is the stock 4 pack with the thick plate at the top and measures about .850


Here is a set of 5 plates with a steel at the top replacing the thick one and it measures .843. No since I planned poorly I do not have an extra pressure plate and 2 new steels for this mod so I used old ones for the measurement and went ahead and ordered the new ones from Transtar today and they should be here in 2 days. I probably would not have a issue using a couple of the old steels but the old pressure plates were obviously deteriorating and that is unsat for an overhaul. I think I can wait a couple more days for new parts.

Here is the return cooler line in the rear of the case. The typical mod is to clean it out with 5/32 bit and then ream it out with a 3/16 for a larger passage.

So once again I removed the one way outer hub to accomplosh the other 1/2 of that rear mod is to create a 1/16" oiling hole in the case to feed the #9 thrust washer which is notorious for getting spun. The oil is supplied from the same return line in the case that was reamed. I also completed the mod by drilling a 1/8" hole in the thrust washer so it lines up with the hole in the case. You can't tell in the pic but it is chamfered.

This is the #9 thrust washer with the 1/8" hole drilled to match the 1/16" hole in the case in the pic above.

This is the REV/High drum that I had all nice and assembled yesterday. Today I took it back apart because I forgot to drill my 4ea. 5/16" holes. Oh, joy! Now I get to clean it again. looks like I get to make another trip to buy some solvent. The holes were drilled on four sides and directly in the middle of where the clutches would rest.

Also ordered my stock TC today and should be here tomorrow. $45.00 ain't too shabby!!!

When I get done I will post all my references for the build as well as the mods because God knows I ain't doing this stuff on my own!

More to come...