I know there has been much on the forum about doing the manual to hydraulic conversion.

I just completed my second conversion and it is the easiest by far.

I purchased a new bell housing and clutch fork for a 1984-88 corvette, a new flywheel, pressure plate and clutch pack for the same. This takes a 10.4 inch clutch as the bell housing will not fit over the larger clutch. I went to a tremec at the same time so I needed the 26 spline. I installed the trans and motor as one unit today.





I purchased a slave cylinder for the 84-88 corvette along with the hydraulic hose assembly and push rod.

I purchased a clutch master cylinder for a 85-89 chevy ¾ to 1 ton truck.

The hydraulic hose assy will bolt right up, just need to carefully bend the metal part to conform.

You will need to shorten the push rod on the master cly, install and measure the distance to the clutch pedal, cut out the section and weld back. This was 1 inch on my 74 and 1 ¼ inch on my 69.

The clutch master cylinder will mount where you took the clutch rod out. You will have to drill the two holes out, taking care not to drill the fuse box.

You will also need a reservoir for the hyd (brake) fluid. I got one off of a Honda at junk yard for $1.00.

Everything fits. If you have power brakes you will have to remove the power brake booster until work is completed. I would rate this a 4 out of 5 on how much mechanical ability you will need. Not saying I have a lot, but I am ASE certified for over 35 years. I think most of you should be able to accomplish this.

 

Thanks for posting this added insight into how to make this conversion.

Some of us are not ready for the Tremec instal (myself included)....how about doing this with a 4 speed Muncie or Super T-10?

Does this bell housing work for a 4 speed also?

The GM truck bellhousing also has the flange for the hydraulic slave cylinder but the hole for the trans is too big for the stock Muncie or T-10. The trans will bolt up to it but I would guess that the front bearing would not last too long in case the alignment was a bit off.

Joe

 

Yes, it will work for T-10 20 or muncie.

 

I forgot to mention that you will have to replace the starter as well. One for 84 vette, but this is a pretty universial fit. Over 150 GM applications. I took one off a wrecked 86 camaro, auto or standard same thing.

 

I made the hydraulic clutch conversion on my 79 when I switched from a 350 auto to a T5 manual 5 speed. It was a simple conversion. I would suggest using an adjustable clutch fork pivot stud to make sure you can get enough adjustment to fully release the clutch.
Bernie