I purchased a LFP 4# quick change pulley setup for my 2003 Mustang Cobra.
I have a 2.93 billetflow upper and a 100mm idler pulley and switched to a bigger Alternator pulley 3.50". LFP had sent me a Gates belt with a 1-3/32" x 79.5" OC, this was TOO SHORT. I wanted to share that I did mount the idle pulley on the upper whole of LFP's aluminum mounting bracket.
I was able to go to the local NAPA and get the correct belt length of 1-3/32" x 80-1/8" OC.
I wanted to post this in case someone else ran into belt size issues.
I found this chart to be incorrect in my case, probably due to the alternator change and the relocation of the idle pulley on the LFP bracket.
I have a 2.93 billetflow upper and a 100mm idler pulley and switched to a bigger Alternator pulley 3.50". LFP had sent me a Gates belt with a 1-3/32" x 79.5" OC, this was TOO SHORT. I wanted to share that I did mount the idle pulley on the upper whole of LFP's aluminum mounting bracket.
I was able to go to the local NAPA and get the correct belt length of 1-3/32" x 80-1/8" OC.
I wanted to post this in case someone else ran into belt size issues.
I found this chart to be incorrect in my case, probably due to the alternator change and the relocation of the idle pulley on the LFP bracket.
Last edited:
