I doubt it but i have heard that ford used 2 different valves during the late 80s, would mean 2 different push rod lengths..... Which would mean my valves arn't seating (which i will check very soon) Any input on this?
justin you cant just bolt down the rockers and go. you have the cam on the base circle on lobe your adjusting. then you bolt down the rocker till you reach 0 lash. thats when all the slop is take out and the plunger on the lifter has not moved. you tell this by spining the push rod as you tighten the bolt. when the push rod gets some drag on it thats the moment of 0 lash. at this point it should take 1/2 to 3/4 of a turn to seat the rocker arm. if it goes further than 1 turn its going to far. if it bottom out before that then its not far enough. you also need to check the contact patch of the rocker on the top of the valve. it needs to centered. any part of this is not right you will have problems with the valve train.
Ford has one valve for rail type rockers (longer) and one for non-rail rockers (shorter). Do you have adjustable rocker studs or are they the positive stop studs? If they are stock they should be positive stop - torque them down and forget it.
I thought it was a bolt down and go!!!! Torque it down to 20 pounds and run it, why why why!!!!! :sorry: sorry brand new cam
your trick flow cam throws out the its stock factor. if the heads have been surfaced that also effects valve train geometry. here check these instructions http://cranecams.com/pdf/473e.pdf they will help you.
Whatever...you obviously have all the answers...just keep doing everything the same way you have been. Your results so far have been stellar! I wish I was your parts dealer...
I'm concerned about your vacuum reading bouncing as you said in the other post. Ties into valve train issues.
