Pulley Dimensions?

Reply Subscribe

Thread Tools

Search this Thread

Dec 16, 2004 | 12:54 PM

Whaler

Thread Starter

New User

Joined: Dec 2004

Posts: 5

Likes: 0

Pulley Dimensions?

What are the dimensions of the upper and lower blower pulleys on an 02' Lightning and do you measure them from the outside edge of the pulley. I just bought this truck used and the boost is 10 lbs. I thought that 8 lbs. was the max. The truck appears to be stock.

Dec 16, 2004 | 04:09 PM

Silver Streak

Postmaster

Joined: May 2002

Posts: 3,241

Likes: 3

From: Broken Arrow, OK

The stock gauge isn't very accurate and the boost you get will vary a lot depending on weather conditions.

Dec 17, 2004 | 05:00 AM

sigma

Senior User

Joined: Sep 2003

Posts: 452

Likes: 0

The stock crank pulley is 7.5 inches and the stock blower pulley is 2.93 inches. As mentioned the factory boost gauge is not very accurate.

Dec 17, 2004 | 07:55 AM

Whaler

Thread Starter

New User

Joined: Dec 2004

Posts: 5

Likes: 0

Do I measure outside edge or from the grooves of the pulley?

Dec 17, 2004 | 12:55 PM

nthe10s

New User

Joined: Dec 2004

Posts: 5

Likes: 0

From the outside edge - the lower is 7 7/8" , the upper is 3 1/4. The lower is most commonly changed. And yes the factory boost gauge often reads to 10lbs.
Hope this helps.