Would these 2 pulleys work hand in hand? If so any ideas what size belt I'd need to install on them?

I have an SLP and am anxiously wanting to install it on the Denali, but worried my TCS and ABS are gonna keep kicking out and in as they were doing on my '08 Yukon??? the OD alternator should help this problem...

Any ideas... thanks

 

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The thing you have to be carfeul with is that one can't be too big, or too small for the other. As for what size belt, that's going to depend on the size of the pulleys.

Might be a tough fit, unless someone else who's done it, or had knowledge comes along...

 

from the speedinc website.

Underdrive Pulley
SLP's new 25% underdrive balancer for 1999-2008 4.8/5.3/6.0 Silverado/Sierra/SUV and 2006-08 Trailblazer SS incorporates a number of high quality features you won't find on any other aftermarket unit and makes up to 4.9 additional rear wheel horsepower and 6.1 ft-lbs of rear wheel torque. Among these features are a pair of extra tall belt retention walls that eliminate the belt slippage issues common with other balancers. Other unique design strengths include a 100% steel construction (other brands use aluminum), integral timing marks and built in puller mounting threads. Includes a new balancer bolt and detailed installation instructions.

Main Belt: Dayco 5060895 or 89.5" Equivalent (When the vehicle is equipped with an Overdrive Alternator, use Dayco 5060882 or 88.2" Equivalent).