water pump pulley combos

[e-chal]

Bought the Mancinni alum high vol. pump and housing special (mre6900khv) and this came with the 6 blade (a/c) water pump with a backing plate spot welded to the back of the impeller. Going into a 451 engine with no a/c in car (1971 Challenger) and 26 in. alum rad, with shroud and viscous drive 7 blade fan. Should I use the non a/c combo of pulleys or the a/c water pump overdrive combo of pulleys? Car is strictly street driven with "enthusiasm".

[Chryco Psycho]

the factory AC pulley system will not work without the AC , my recommendation would be to use the non ac pulley set but you can talk to Mancini & see what they recommend , maybe their system would work without the AC pump

[e-chal]

Sorry Chryco about slow response. Talked to Mancinni as you suggested and they told me the same thing as you have said. Thanks