Like to have some suggestions on a new cam for our 409 SBC. It is a G M block,bottom end good up to about 7600-7800. It has Motown 220 irons with Harland sharp 1.5 &1.6 roller rockers.It is topped off with Motown intake MSD and a 750 Quick Fuel. Comp. is 12.5-1 on VP 110.We are running a 5.83 in the rear but rumors are 600. for our 1/4 mile clay with a lil banking. The track is UMP sanctioned and usually good bite up until Summer then it will slick off some. We would prefer to buy only cam and lifters so keep this in mind on your sugg.