Truck Bellhousing and Muncie M20

[Thetransporter2007]

The Gbody bellhousing pivot ball is rotated about 3 degrees counterclockwise. You can see the larger pad cast into the 697 to accept either pivot location. That and the G-body-specific fork with the jog in it are there to clear the floorboard. The typical G-body Chevrolet '606' housing only fits a 153-tooth, 12-3/4" flywheel (right). For 1978 only, I think, there was a '697' casting that fit the 168-tooth 14" flywheel (left). The 697 will fit a 12" clutch. Sorry to say, though, that they are really, really hard to find. However, the overall casting is the same as a standard GM car bellhousing for a 14" flywheel, - you could use the matching straight fork and put a big dent in the floorboard for clearance.

What size flywheel and clutch kit are you running?

If you abandon the approach you are using now, and that curve fork is not useful...let me know. I might buy it from you...

Sounds like you mean one of these “697’s?

1966-1982 Chevrolet GM# 464697 V8 Aluminum 11" Bellhousing | eBay

This is for One Used Original Chevrolet Aluminum Bellhousing, (Bell Housing), (GM Part Number 464697, GM Group Number 0.683) Fits 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 and 1982.

www.ebay.com

I think the pivot ball needs to be moved to the lower flat portion inside if we are going to use the curved clutch for then though from what I’m seeing?

 

[Dayzedandkonfuzed]

If you want to change everything, this is what I did. Along with a 3rd gen Camaro clutch master cylinder. The hole in the firewall for cruise is a perfect location for the master, but will require reinforcement.

 

[ssn696]

Looks like that will work. You may want to epoxy a threaded plug into the old hole or weld it up.

For that price plus labor, perhaps a safety bellhousing is not much more cost? Just a thought...

 

[Ribbedroof]

Given the scarcity and expense of the OE stuff, along with the potential for clutch/header fitment problems, the hydraulic throwouts look pretty attractive, although I do recall the late great Steve had issues with them.

 

[Thetransporter2007]

Given the scarcity and expense of the OE stuff, along with the potential for clutch/header fitment problems, the hydraulic throwouts look pretty attractive, although I do recall the late great Steve had issues with them.

yeah I have found a few

Looks like that will work. You may want to epoxy a threaded plug into the old hole or weld it up.

For that price plus labor, perhaps a safety bellhousing is not much more cost? Just a thought...

Yeah that's what we were thinking. Or pay a machine shop to fill it for us. I thought about the safety bellhousing but the one we were pointed to was almost $600! If you have any cheaper that may work let me know 🙂. Otherwise I am still open to opinions on this idea we have. 🙂