When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Lol people are struggling to make 650 on forged blocks and on 15psi!!! The most I have ever seen on a stock block is like 500 somthing to the wheels by BIG BRI.
Plenum is basically a manifold, Its the sliver piece which has the strut bar going over it, upgraded plenum allows for more air in because there is more room with the upgraded plenum.