Hey guys can someone tell me what size belt I need for a 2.87 pulley?

 

There are two different non revup belt layouts. The older one has a 93.5 inch belt, and the newer one has a 79.5 inch belt. I think you need to go down to a 93 or 79 depending on your application. I have the 79.5 layout and I'm swaping to the 2.87 pulley this weekend. I'm keeping the 79.5 belt cause I have the GTM pulley mod.

 

I think that I have the older layout is there anywhere on here that I can see what the two look like?

 

Look in the Vortech FAQ thread on page 1.

 

you want the NAPA gates belt #060926

 

Well I just wanted to confirm that the 79.5 inch belt along with the 2.87 pulley and GTM pulley mod is a perfect fit. With out the GTM pulley I would probably go for a belt that is one inch smaller.

 

what size for the belt without the GTM pulley I am getting it soon but for now

 

so do I need a 78 -78.5 size, and who can I talk to about getting that idler to tighten up that 2.87

 

Did you find out which belt layout you have on your vortech?

 

the stock setup for a nonrev, will that work? at least until I can get an GTM idler pulley
https://my350z.com/forum/attachment....3&d=1172256974

 

For your setup most people go with a 93 or 92 7/8 inch belt. If you buy the GTM pulley mod it comes with a 93.5 inch bando belt. By adding the GTM pulley with the 2.87 you won't need to go with a smaller belt. If I were in your shoes I would consider doing the GTM pulley mod now and be done with it. I can tell you this the cars throttle response is much more crisp with this setup.

 

cool thanks for the info I was so confused and vortech isnt really helpful, do you know is it ok to run the 2.87 on the stock blower without over spinning it?

 

At 6600 RPMs (redline for non revup) you will over spin according to vortech, but at 6400 rpms you are fine. Power starts to drop off after 6400 rpms anyways. At least for me it does.