Original: $89.99
-65%$89.99
$31.50The Story
Dyno testing our 5.5" underdrive pulley on a near stock L36 showed 3WHP gained at 6k rpm. In car testing shows only a 2 deg increase in operating temps over stock. Higher gains are possible depending on your engine combination. Pulleys are available in a high gloss black anodized finish.
- 8% underdriven
-
dyno proven horsepower
-
lightweight design saves a pound of rotating mass
-
increases water pump life expectancy
-
better fuel economy
One size larger than stock belt recommended.
Does NOT fit HBody cars because of their front engine mount. Bonneville, Park Ave, & LaSabre.
Ā
Water pump pulley: 115 in/lbs.
March 2025 update: New design to match our ZZP water pump pulleys from other markets. New weight is only 0.55lbs.Ā

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Dyno testing our 5.5" underdrive pulley on a near stock L36 showed 3WHP gained at 6k rpm. In car testing shows only a 2 deg increase in operating temps over stock. Higher gains are possible depending on your engine combination. Pulleys are available in a high gloss black anodized finish.
- 8% underdriven
-
dyno proven horsepower
-
lightweight design saves a pound of rotating mass
-
increases water pump life expectancy
-
better fuel economy
One size larger than stock belt recommended.
Does NOT fit HBody cars because of their front engine mount. Bonneville, Park Ave, & LaSabre.
Ā
Water pump pulley: 115 in/lbs.
March 2025 update: New design to match our ZZP water pump pulleys from other markets. New weight is only 0.55lbs.Ā

















