M-code A-body question

I’m working on my GTS, installing some 440Source heads, changing camshaft, getting rid of the leaking beat up 187 pan for an 893 pan, a few other things. I have the correct driver’s side engine mount bracket, but the engine that is in it is a 75 C-body 440 and it is not drilled by the oil pump for the M-code bracket to bolt to, so it’s been using a 383 mount. Correct 440 manifolds, original power train is long gone. My brain could be fading but, why could they not use the 383 mount bracket?...

M-code A-body question
Author: admin