do you need to change jets with a 1" hvh spacer?
 

Just curious if it throws it off enough that you need to change jets with a 1" hvh spacer.

Re: do you need to change jets with a 1" hvh spacer?
 

I doubt it especially on stock 500HP's. The jetting is on the rich side to start with.

Re: do you need to change jets with a 1" hvh spacer?
 

According to the guys at HVH you generally have to go down a size or two. The Super Sucker smoothes the flow of air and increases the signal to the carb.

Re: do you need to change jets with a 1" hvh spacer?
 

Since the HVH design increases the air velocity, it should pull more fuel. If the engine was tuned properly before you should be richer with the HVH Spacer, so you may need to go down a jets size or two.

Re: do you need to change jets with a 1" hvh spacer?
 

I had to jet down a few sizes after I installed mine, but these were put on FRESH motors with better heads.

Dave