I purchased a Lightning and was told it had an aftermarket pulley, how can you know what size is it? Can you tell by just measuring it?
No beating at all just curious, want to put everything back to stock, was told it had a lower pulley and a throttle body only. Just a weekend if that much if it don't rain.Upper or lower?
Measure it where belt rides and you'll know how many lbs it is.
If you don't k ow what mods are in the truck or the tune and are beating on it, I hope you can afford an engine