anyone kno the max lift for the centerbolt iron stock L98 heads? car is an 87 formula350 with the stock heads and cam etc, intake work done as well as complete exhaust and chip etc...

wanted to throw in one of these cams for some extra kick.... but idk what the stock max valve lift of the stock heads are...i have 1.6 aluminum roller rockers as well i would like to stick on but the extra lift with these cams might be a prob.

CRANE Powermax emissions legal cams
1.) factory hydraulic roller for 87-89 corvette and F-body w/350tpi
270-104224 270/276 duration .452/.465" lift RPM 1600-5400

2.) mid and upper range torque and HP for 305HO and 350TPI w/3.73
270-114132 270/276 duration .440/.454" lift RPM 1600-5400

3.) Serious performance for modified 305 5-spd and 350 w/3.75
270-114142 272/284 duration .454/.480" lift RPM 1800-5600

 

Its about .480" lift for stock heads with 1.5 rockers.

 

factory hydraulic roller for 87-89 corvette and F-body w/350tpi
270-104224 270/276 duration .452/.465" lift RPM 1600-5400

so throwing 1.6's at this cam would not work... aghhhhhh! does anyone kno the lift of the stock L98 cam and adding 1.6's to it will get me wat lift?

 

Duration and LSA will have a MUCH larger effect on the operation of your engine than peak lift will. Adding 1.6s to a stock cam will add a few hundredths to your lift and a handfull of horsepower. Yes, you can use 1.6 rockers with the stock cam, no problem. But changing the duration and LSA of your cam (even if the lift is identical) can have a FAR more dramatic impact on your engine's output and operating RPM range, with proper tuning.

 

so it would be smarter to just throw in the new cam vs, adding the 1.6's to my stock cam?
obv i wouldnt be able to run the first crane cam with 1.6's bc i dont have enough valve lift with the stock head spring, so the first crane cam and 1.5's will be ok...wat kinda hp numbers increase should i be looking at?