I just wanted to put down a few notes for folks here that are considering a 4 speed swap on their montes. Last year, I bought a car that I felt would be perfect for a project, just like I wanted. It was a 72 bench seat, 350 4bbl, th350 transmission car. I wanted to convert it to a buckets, console, big block, manual transmission. While it is far from being completed (if there is such a thing), I feel that one of the major steps has been accomplished: the installation of the Muncie 4 speed. I also have the bucket seats in and have a real good lead on a 454 that could be mine in the next few weeks. Anyway, I wanted to give a list of parts that I needed for this project, just in case someone wants to take this project on:
bolts for transmission to bell housing
bolts for bellhousing to engine
bolts for flywheel to crank
clutch, pressure plate, throw out bearing, line up tool
bolts for pressure plate to flywheel
(3) bolts to bolt shifter linkage to transmission
brake and clutch pedal as well as rubber pads for them
upper clutch push rod
frame mount for z bar (specific for monte carlo)
frame side z bar pivot ball
engine side z bar pivot ball
3 pc z bar plastic bushing with retaining clip
clutch adjusting rod with swivel
clutch rod boot
clutch rod boot retainer
push rod return spring
clutch fork boot
clutch push rod clips
4 speed hump for console
clutch return fork
console boot retaining ring
console trim screws
console wiring harness
console extension harness
console mounting brackets
flywheel inspection cover and bolts
Here are a few parts that I will need but have not acquired:
floor shift steering column
speedometer without PRNDL
neutral safety switch
backup light switch
There may be other things but it is drivable at this point
Here are a few things to consider:
I am a mechanically inclined person but am not a mechanic. I spent about a week doing this work, after work and 2 of the days were full days working on the car. I think I could have done this project in 4 full days. Now that I have gotten most of it done, I could probably do it again in 3 days.
Don't buy flywheel and clutch until you get your bellhousing. The bellhousing will determine which flywheel and clutch you can use.
Make sure your frame mount for z bar is for a first generation monte carlo. All other a bodies used a similar but different bracket. Our cars need a specific one. The clutch linkage kit I bought came with everything for a Monte, and I still got the incorrect bracket.
As far as transmissions go, there are a lot of options with gear ratios, etc. I would recommend talking to someone that can help you decide what you want. My car has 2.73 rear end gear. I opted for a 2.54 first gear in my Muncie. It operates nicely. I have good power in all gears. It probably wont be a tire burner. I might would go with a 2.90 first gear if I could.
As far as shifters go, I bought the Muncie but before I installed it, it was recommended that I get a Hurst. Ground Up offers a Hurst competition plus shifter with a Muncie handle. This is what I bought to make it look correct. There are probably other vendors as well.
When positioning the hump in floor, install bellhousing, mount shifter (not the handle) to transmission and stick it up to see where to start cutting the floor. You will need to have cross member in as well to get proper position. I cut a small enough hole for the shifter to not get in the way of existing floor pan. Then, once the transmission will set in its correct location, I bolted on the shifter handle and placed the hump where it needed to go based on shifter range of motion. I marked the perimeter of hump, removes it and cut the hole about one inch inside the perimeter of hump. After welding it in, I used seam sealer to seal the underside and then coated with POR 15 for protection.
I also want to say that I could not have completed this without the great guys on this forum. I ask any of you to add to this thread to make it informative for any of us considering this swap.