How can I get more power from a 428CJ?

[undy]

Originally Posted by ERA427

I haven't checked my air filter - it's one of this giant ovals with the black and aluminum fluting on top that says "COBRA." I'll see if K&N makes one for those.

I found the CFM rating for the K&N oval filter to be a bit lacking for a "healthy" FE so I made some changes to mine. I modified the lower lid to set lower and accept a taller filter element ( 2 1/4" vs the 1 7/8" standard one) I also had my local machine shop cut the top lid to install a late model GM K&N filter(3.0L V6). I chassis dyno'd the car before and after the modifications and picked up 14 RWHP from the changes, a significant improvement.