The 15% pulley works fine with the stock belt. Can someone tell me the size of the shorter belts needed with 17 & 19%? Even better -- can someone pass on some part numbers?

Thanks, Tom

 

I think everyone is using the NAPA 25060535 belt. Lots of discussion on the topic here is one link:
https://www.northamericanmotoring.co...mp;topic=24869

 

>>I think everyone is using the NAPA 25060535 belt.

Eric from Helix13 is using the NAPA 25060535 belt for 17% (optional) and 19% (required) reduction pulleys.
Replace the belt in about 25,000 miles.

 

Thanks all -- I knew I could get a quick, authoritative answer here

Tom

_________________

Tom Clark, Clarksville MD: CR '02 MCS

 

FWIW, I've used that NAPA belt -25-060535 with both the 15% and 19% pulleys with great results.

 

I use the same as Andy....

 

I've actually been using the NAPA 25-060539 belt with good results. I had two of the 535 belts shred, both on the track with a 15% pulley. I haven't had an issue with testing using the 539 belt on the 19% shredding.

That doesn't mean anyone else is wrong - just my experiences :smile: .

Hope that helps!

Randy