I wouldn't do that. The 5.0 motor, with or with out A/C andPS are set up to run a reverse rotation waterpump. That is because the belt coming off of the crank wouldn't have the friction, and under load it would slip...by making an "S" from the crank to the Waterpump, it "bites" the pulley harder...I wouldn't machine grooves...
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Dustin
89 Saleen GT Sport
Supercharged 306
Started her up 6/8/03
Old Motor
Supercharged 347
516 rwhp
553 rwtq
11.249@126.83
1997 Honda CBR 1100XX Super Blackbird
162 hp
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