Is it correct that crane roller rockers were used on 93 to 95 Cobras and would this be a good upgrade? I have an 87 roller motor in my Maverick with e7 heads 2.02 valves with beehive springs and an f303 cam it still has stock rocker arms would like something better I believe the cranes are 1.71 ratio any idea if this will work with an f303 cam and is it worth it?
Yes, the Crane Energizers are one and the same as the 93-05 Cobra rockers. With 2.02 valves, the F303 and 1.7's I'm with Falcenac, you need to check the piston to valve clearance, the 1.7's add .030 more lift at the valve vs 1.6's, they also add a bit more duration too.
Well its worth a try then if they don't work on my Maverick can use on my Falcon it has a stock 5.0 . How does one go about checking the piston to valve clearance?
I ran a set of those Crane rockers on my old P heads. Ordered them from Jegs and when I took them out of the box they had Crane's part number and Ford's part number on them.
By the way, those are 1.72 ratio. Very nice upgrade. I am using them with good results. Clean the threads and the holes, and use locktite when you install them. I have had a couple "walk off" and had to limp home on 6 cylinders. Definitely check clearances, and be sure your springs can handle the extra movement.
