Chevrolet and GMC 's "756" is an aluminum 168 tooth Bellhousing.
 This bell has room for a 12" factory clutch and pressure plate
and has a 5 1/8" center hole for the GM truck transmissions.



     Top view
     The "6263756 " clutch cover uses the Muncie, Saginaw,T-10
car transmission bolt pattern with a fifth hole at the top center.
 Note: car trans require an adapter for proper fit.



     Part#
    The part numbers and GM insignia on my example looks
like the die was hand ground with a pencil grinder.



     Top view
   In this picture the extra trans mounting hole is evident.
This "756" clutch cover has no GM logo on the upper ribs.



   Fork side view
    Clutch fork hole is typical. This view shows Z-bar mounting stud installed.



  Z-Bar mounting stud
      Z-bar mounting stud boss is a drilled and tapped thru hole.



   Bottom view
    In the above view the raised area needed to clear the
Chevrolet and GMC factory 12" clutch and pressure plate is evident.



      Side view
    Here you see the pronounced starter cover used on all
Chevy 168 tooth flywheel bellhousings.



     Inside view
The General Motors Part number 6263756 utilizes
a gravel guard that is larger than the 11" car bellhousings
guard. This guard has a different bolt pattern, but uses
the same 1/4"-20 cap screws (bolts) for attachment.



   Z-Bar mounting stud
Some applications call for the engine side ball stud
for the equalizer shaft to be screwed into the clutch
cover instead of the engine block.



    Inside bolt hole view
Here you can see the (5) five 1/2"-12 threaded holes
for transmission attachment and the single clutch fork ballstud
mounting "boss".