sounds really expensive to me, but banging through the gears with a freshly built 455 would be worth it.

is there like an article i can read that will have step by step what i've got to do? i'm sure i'm not the first to want to do this. how about getting the equipment? i know i can't find anything at a junk yard- i've looked. this is a new idea which i haven't really thought through so any point into the right direction would be appreciated.

thanks

sounds really expensive to me, but banging through the gears with a freshly built 455 would be worth it.

is there like an article i can read that will have step by step what i've got to do? i'm sure i'm not the first to want to do this. how about getting the equipment? i know i can't find anything at a junk yard- i've looked. this is a new idea which i haven't really thought through so any point into the right direction would be appreciated.

thanks

If you have a '68-'72 GTO you're in luck, OPG sells clutch linkage kits consisting of NOS and repop parts - complete. Finding a good Muncie isn't too hard on the internet. Buy a new bellhousing, clutch, shifter and flywheel. Lots of people sell four speed pedal setups on eBay. Get the factory manual and enlist the help of a good transmission shop. Its worth it - you'll substantially increase the value of your car. If you have a pre'68 vehicle you'll have a hard parts hunt for the clutch linkage but it's not impossible. Hydraulic clutch linkages are also a possibility.

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by robocop:
Hydraulic clutch linkages are also a possibility. <HR></BLOCKQUOTE>

but don't i have to do a lot of fabrication on the chasis for that? i think i was watching the show "trucks" when they did that but it was a while ago...

it's a 67 tempest. sorry, i'm kind of a newbie at this, but Muncie is the manufacturor of the actual transmission itself?

hyd clutches are easy but not cheap.Tom

I thought that hydraulic clutches weren't available for these cars.
I own a '68 GTO 4 speed and I can't seem to get used to the heavy mechanical operation of the clutch. It is the one thing I really don't like about my car. What's needed to convert it to a hydraulic setup......

hyd clutch is not easyer to pushin,it just get rid of the linkage.You mount a M/C on the firewall,the rod goes to it from the cluth pedal.You use a expandable hyd throwout bearing on the nose of the trans,a hyd line goes from it to the M/C.No fork or any mech. linkage at all.Tom

i bought a set up on ebay to convert my 350TH to a 4 speed in my 66 lemans. i think you could probably buy all the parts you need out of catalogs but i think that would get pretty expensive. a couple of things to remeber.. i had to remove the drivers side front fender so i could weld the little bracket to the frame for the z-bar and i had to do some floorboard modifications for the shifter and firewall modifications for the clutch linkage. the original crossmember and the drive shaft didnt need any mods. also, if you are running headers you will probably find that the clutch z bar will hit it. alot of headers claim that they will work on 4 speeds but the only one i could find that would work were the hooker super comps. hope that helps, you can e mail me direct for more details of you like. [email protected]

and yes, it was worth all the trouble to be able to bang through the gears with a 4 speed.

I converted my '72 LeMans from an auto to a manual last summer. Yeah, it was some work and took a couple bucks, but it is so much fun to run through the gears now.

Even though I installed a 5spd, I still installed a mechanical clutch (Centerforce DF) and Lakewood scattershield that are the same exact components used for 4spd cars. I bought most of the parts I needed to do the conversion from Performance Years (the company that sponsors this forum). PY didn't have the pedals I needed, but I think they offer a set that would fit your car along with just about all the other linkage you'll need.

I've got D-port heads on my car and run Doug's headers and have no clutch linkage clearance issues.

Good luck!

Ditto to Robocop above. I converted my 71 gto
to a muncie m-20 wide ratio over the winter
and attention to detail is a must, especially
when it comes to the clutch linkage. The Pontiac
Restoration Guide 1964-1972 was a great help
along with all the advice from this site. Your right, there's just something about throwin' 4
gears around listening to a good ole 60-70ish
oldie but goodie on a sunny afternoon. There's a song in that somewhere.

Good Luck



Good Luck