What is the main benefit of an 8-groove pulley?

An 8-groove pulley offers more belt surface area than a typical 6-groove or V-belt setup. This helps prevent belt slippage, ensuring your accessories like the alternator and power steering pump spin consistently with the crankshaft.

How does the pulley diameter affect accessory speed?

A larger diameter pulley, like this 7.48-inch one, spins accessories slower than a smaller pulley at the same engine RPM. This can be useful for ensuring adequate charging at idle or preventing over-spinning of certain components.

What material is this pulley made from?

This crankshaft pulley is constructed from aluminum, which makes it lighter than a cast iron equivalent. This can contribute to a slight reduction in overall engine weight.

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Specifications

Brand: ATI
Part #: ATI917139
UPC: 800157081071

ATI Shell Assy - 7.48 - Alum LW - 8 Grv - Chevy Frt 3/8 Bolts

Name: ATI Shell Assy - 7.48 - Alum LW - 8 Grv - Chevy Frt 3/8 Bolts
Brand: ATI
SKU: ati-ati-shell-assy-7-48-alum-lw-8-grv-chevy-frt-3-8-bolts-t14-361248
Price: 403.88 USD
Availability: BackOrder

$403.88

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ATI 7.48" aluminum crankshaft pulley for Chevy V8s with 8 grooves and front 3/8" bolts. Improves accessory drive efficiency.

Key Features

Fits Chevy V8 engines with front 3/8" crankshaft bolts.
7.48-inch diameter pulley.
Features 8 grooves for accessory drive belts.
Lightweight aluminum construction.
Designed for front-mount accessory drive systems.

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About this part

Product Details

If you're working on a Chevy V8 and need to drive multiple accessories, this ATI crankshaft pulley is a solid option. It's a 7.48-inch diameter pulley with 8 grooves, designed to handle the belt load for things like power steering pumps, alternators, and A/C compressors on the front of the engine. The aluminum construction helps keep the weight down compared to a cast iron pulley, which can be a small advantage in overall vehicle balance.

This pulley is well-built and features 8 grooves, giving you plenty of belt surface area to reliably turn your accessories. It uses 3/8-inch bolts for mounting to the crankshaft, a common size for many Chevy V8 applications. Because it's a larger diameter, it will change the speed at which your accessories spin relative to the crankshaft. This can be beneficial for certain setups, like ensuring your alternator spins fast enough at idle to keep the battery charged or keeping your A/C compressor engaged effectively.