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Posted: Wed May 01, 2013 5:18 pm
by blackbird3
HI, JUST CURIOUS IF ANYONE KNEW WHAT THE GM PART # WOULD BE FOR THE W/P,ALT, P.S BELT WOULD BE? I THINK THE CRANK PULLEY IS UNDERSIZED. I HAVE THE CORRECT # FOR THE A/C BELT BUT NOT THE OTHER BELT, #S WORN OFF COMPLETELY. ANY HELP WOULD BE GREAT.
Posted: Thu May 02, 2013 1:09 am
by Blackbird34
My Blackbird was upgraded to the Phase IIX package in 2006. GMMG used Gates belts at that time in my car. My main drive belt Gates part # is
KO60750. The accessory belt is Gates # KO40378. The crank pulley is definately undersized to free up some power. I would assume the same under drive pulley was used on all PH IIX cars but......you never know. Hope that helps!
Posted: Thu May 02, 2013 3:56 am
by NCGuy68
@Blackbird34 wrote:My Blackbird was upgraded to the Phase IIX package in 2006. GMMG used Gates belts at that time in my car. My main drive belt Gates part # is
KO60750. The accessory belt is Gates # KO40378. The crank pulley is definately undersized to free up some power. I would assume the same under drive pulley was used on all PH IIX cars but......you never know. Hope that helps!
Good info Blackbird34.
Another way to measure the approximate lenght of a belt is to use a cloth measuring tape or even a strong, thick piece of string. The resulting lenght can many times be cross referenced to a GM belt number. A NAPA store or local GM dealer can usually find a GM number that matches the 'found' lenght.
Posted: Thu May 02, 2013 4:11 am
by NCGuy68
OPS, I can't spell tonight..... :doh: .
That should be 'Length' as in 'Belt Length'.
Posted: Thu May 02, 2013 1:13 pm
by blackbird3
THANKS FOR THE INPUT, I CAME UP WITH THE SAME # FOR THE A/C BELT, I FIGURE BOTH BELTS ARE CLOSE TO 80MM SHORTER THEN STOCK. I WILL MATCH UP THE K060750 # TO GM. TOM