186 motor

[jimmy]

i have 2 fc sedans. one has the original 138 motor and the other has a 149 grey motor.  I was thinking of putting a 186 red motor into them both and i was wondering if the 186 will bolt onto the original gearbox.  Do all the old holden motors have the same bell housings?
  If you can help me out i'd really appreciate it.

 Cheers

[Shayne]

Gday Jimmy,
It might pay to double check what you have :-/ because there is no such animal as a 149 grey motor.  Grey motors started out as 132.5 cubic inches, & then went out to a whopping 138 in the FB. ;)

[robbzfc58]

jimmy  grey g/ boxes are one piece..so no seperate  bell housing .a red or blue motor will bolt up to a grey box using cluch & pressure plate from red or blue motor.you need to use the starter motor from a red or blue motor also
 good luck
   trev

[RET]

You'll also need a different front end to suit the red motor engine mounts, most likely a HR one with discs to get rego.

cheers
RET