Which Clutch??

[rb77413]

Ok I have a 77-78 ish OD 4-spd. It is planned to go into a 66 Barracuda. I have the flywheel and clutch setup that fits within the bell housing. (lots of surface rust) I hope the rust can be cleaned up ok. The big thing is what size clutch do I need. The car is a 273. So I think those came with a 9.5 or 9.25 clutch? Would the bigger 10.5 clutch fit? Also I have the bad clutch the came with the flywheel. How do you measure the flywheel? From teeth to teeth or across the area where the clutch rides. A friend of mine brought another flywheel over and it was too big for the bellhousing? How is the clutch measured? The car was orginally a 3 on the tree. I have the floor hump Z-bar and the pedals were already int he car. So this clutch thing is holding me up. The service manual lists it as a 9.5" and all the aftermarket says "w/10-1/2 CLUTCH" .Thanks -Bob

[23T]

Measure the clutch from one side to the other center line

[23T]

Also be SURE to have you flywheel re-faced

[rb77413]

I was checking new flywheels at summit. What tooth count do i need 130 or 143? Whats the difference, other than 13 teeth? If the flywheel I have works, i will deffinately get it resurfaced. -Bob

[23T]

Number 1 starter mesh

[rb77413]

Originally Posted by 23T

Number 1 starter mesh

Duh!! Man brain quit working. Thanks. If I have the wrong flywheel, is there a different starter, or? I know the hemi's had a bigger flywheel, is that the 143 tooth? If so then the 130's should be fairly likely what you will end up with grabbing one from a boneyard?

[perfmachst]

hello, the 273 had a 12" diameter flywheel and 9.5 clutch from the factory.
the 130 tooth/ 13" diameter flywheel is common to 318, 340,383. to install this will require a bellhousing from a 340/360/ 318. the flwheels are measured from outside to outside.the 13" flywheel and proper bellhousing is a bolt in deal. with the O.D. trans, you will need one with the larger center hole in it. you could call mcleod clutch for a 9.5 clutch, drop in deal then.
they show a clutch for a 225 six, should be a bolt up unit. long time ago, I put a six cylinder clutch behind my 273, worked just fine. just food for thought.

[rb77413]

Thanks, wasn't sure if a /6 clutch would have enough grip. The tranny came with the bellhousing. I will have to measure the flywheel to make sure which one I got. Thanks again.

[perfmachst]

hello, you have the correct bellhousing, then it will require the 13"/130 tooth
flywheel and the 10.5 clutch. as for a clutch, I prefer the mcleod B&B hat/with the long fingers. this is the clutch. it's low pedal pressure, has some C/W to help it grab and releases clean. in the 66 car, install a brace from the master cylinder to the shock tower. this will prevent the firewall from flexing. clutch will work much better also. good luck,

[rb77413]

Thanks, just measured the clutch 10.5 across the friction area, and the flywheel is just under 13, like 12 3/4-7/8. Is the brace necessary? Any kind of scrap metal long enough will work right? I have a 1" round tube in the scrap metal pile. Thanks again -Bob