What's the fan belt configuration for a 72 LS-5 with PS, AC, Alt
11-10-2001, 11:49 PM
#1
Racer
Thread Starter
What's the fan belt configuration for a 72 LS-5 with PS, AC, Alt
I recently purchased an LS-5 with turbo 400, PS, PB, AC, Alt. It doesn't have an emissions air pump (may have been pulled years ago). The belts were arranged: crank/water pump/ps pump, ps pump/alt, water pump/AC, nothing on inside crank and water pump, and nothing on outside crank. Should it have an idler pulley? If so what is the part #. Any help or ideas?
Phlash 72 LS-5 Conv
:confused:
Phlash 72 LS-5 Conv
:confused:
11-11-2001, 08:32 AM
#2
Burning Brakes
Member Since: Jan 2000
Location: Columbus, IN USA
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Re: What's the fan belt configuration for a 72 LS-5 with PS, AC, Alt (Phlash)
Plash, I am looking in my assembly manual for 454, this is how it shows a 454 with PS & AC.
Back groove: crank, water pump, idler
Next groove: crank, water pump, (back groove) PS
Front groove: water pump, AC
Front groove: PS, Alternator
I don't know the part # for the idler pulley but Dr. Rebuild has it in the catalog.
Hope this helps.
Back groove: crank, water pump, idler
Next groove: crank, water pump, (back groove) PS
Front groove: water pump, AC
Front groove: PS, Alternator
I don't know the part # for the idler pulley but Dr. Rebuild has it in the catalog.
Hope this helps.
11-11-2001, 11:08 AM
#3
Race Director
Re: What's the fan belt configuration for a 72 LS-5 with PS, AC, Alt (Phlash)
Many LS5's came without the idler and it works fine anyway. I don't know what GM's plan was for the idler. Most original LS-5's I've seen didn't have it.
The inner groove on the crank & w-pump has a short belt. It's a little tricky finding the right length, as there is no adjustment. You find the right belt, and it is tightened when you tighten the bolts holding the w-pump pulley. Works fine, though.
The inner groove on the crank & w-pump has a short belt. It's a little tricky finding the right length, as there is no adjustment. You find the right belt, and it is tightened when you tighten the bolts holding the w-pump pulley. Works fine, though.
