I have a 89 305 firebird tbi what would I have to do to use
UPC:036584780564
Cam Style:Hydraulic roller tappet
Basic Operating RPM Range:1,200-5,200
Intake Duration at 050 inch Lift:210
Exhaust Duration at 050 inch Lift:220
Duration at 050 inch Lift:210 int./220 exh.
Advertised Intake Duration:264
Advertised Exhaust Duration:274
Advertised Duration:264 int./274 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:0.480 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:0.480 in.
Valve Lift with Factory Rocker Arm Ratio:0.480 int./0.480 exh.
Lobe Separation (degrees):112
Computer-Controlled Compatible:Yes
Grind Number:CS 264H-R12
I'm going to build a 350 later and reuse this cam

I also might throw 350 vortec heads on the 305 to use later to to help with flow I don't care to loose little compression pump gas car

 

Factory heads won't work with that much lift and its not worth having them worked over to accommodate the lift. You'd have to replace the entire top end, and at that point you may as well just wait a little longer and go straight to the 350.