Flywheel Size / Bellhousing Question

[Valiant1]

Do the 130 and 143 tooth SB flywheels use different bellhousings? If so, how do you tell them apart? Is it correct that a 130t flywheel uses the 10.5" clutch and the 143t uses the 11"? Thanks in advance for the help.

 

[71Scamper]

yes it is true. I am trying to figure out the difference in weight myself.

 

[67Dart273]

You have to understand that a larger/ smaller flywheel has to "move the starter." This means that there is no way to use the smaller wheel in a larger bell

So far as 10.5 --11", there ARE 11" clutches that use the 10.5 cover bolt pattern. These are variously referred to as "scalloped," 10.9, 10 7/8, and 11"

You can identify the originals by seeing the disc lying in the upturned cover. The cover has mounting ears that come UNcomfortably close to the disk

To my knowledge, these were first used in things like the 70 B bodies. My 69 383 RR had a "real" 11" clutch, while my '70 440-6 car used one of these "fakes."

Here:

http://www.forabodiesonly.com/mopar/showthread.php?p=1969798974

 

[d55dave]

I could be wrong, but I believe that small blocks only used the 130 tooth flywheels, although some had, as mentioned above, a "scalloped" pressure plate allowing the use of a larger disc on a 130 tooth flywheel. Interestingly enough, the same P/N 130 internally balanced wheel was used in early dakotas (V6?) although I think it had a 131 or 132 tooth count. It fits the old bellhousings without any problem.

 

[67Dart273]

I don't know what tooth count, but the pickups used larger wheels, so I'd guess that if you ran into a pickup / van bell built for an OD A833 that might be a "situation." The "real" truck 4 speeds of course had a different bolt pattern.