![]() To see what the 1.7s give you, divide the lift by 1.6 and then multiply by 1.7. For example, my '86 5.0's stock cam lift is. Your cam card will tell you how much lift it provides with a stock rocker. ![]() ![]() All in all it is a good upgrade.you may not "feel" anything in the butt but its nice peace of mind to know things are right.especially if you are going to spin the engine tight at all. If you don't have screw in studs I would say forget about them.if you do I would recommed you to get ARP studs.check out their site for info about the 7/16" studs they make. Valve cover clearance most likely will be a problem as well.will need taller covers. Also check for spring bind as mentioned above.and for piston clearance because the valve will be opening more. If it is you may need different length pushrods. I think the spec is that it should not be closer to the edge of the valve tip than. You need to make sure the roller end is in the middle of the valve when the valve is completely open. The stock rockers can be off due to the ball and socket arrangement. My take is that they keep the rocker in perfect 90 degree alignment with the valve stem.that can be an issue with the stamped steel rockers.
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