Quote:
Originally Posted by nUcLeArEnVoY
That's what's irritating because this stuff is so inconsistent. I do know that the front plate spacer is longer than the rear plate one that I'm inquiring about.
I found in another thread that it's 0.25" so screw it, I'll just go with that. Lol
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.25" thickness is correct for the rear SPACER.
Have many multiples original Pontiac V8 pumps & PS brackets & just looked at a '71 & a 77 with original brackets still attached.
Front & rear SPACERs & mtg PLATEs are the same for PS pump mounting on '71-79 traditional Pontiac engines with the 10 SI alt. The small spacers alone are also the same for '77-79 301's w 10SI alt.
Front & rear mtg PLATEs are the main difference between the 301 pump mounting, easy to swap.
Factory 80 amp (27SI) Alt/ PS setups, as well as later '80-81) 12 SI alt setups incorporate different PS mtg parts.