Idon't think the problem is the cam in itself as I have owned and still own both cams. The Mopar cams from the days gone by are just that dinosaurs.The 284 -292 all pull like crazy on upper end and are good race cams they are not good on the street. I know as I drove one for close to 20 years. Can they be made to work YES, but right now I'm using a Racer Brown custom grind that to say the least is fantastic. has all the bottom end and high end I want and pulls right to 6500, it can also break the tire loose from just flooring it in 1st and sec gear.and actually gets a legit 14mpg. The 292 and 284 are lucky to get 8-10mpg on a good day. As I said use them if you got them but face facts the new generation of cams are far better. And with fuel at $4.30 a gallon I still want to drive my car just my 10 cents