My Teardown @ St Louis.....

Greg Reimer 7376 · 05-03-2010, 07:08 PM

I remember a 283 racer of immense merit from Div.6 years ago talking about how he went through about a hundred stamped Chevy rocker arms to get the 16 that he liked.It never hurts to have an assortment of push rods of every length from .200"long through .200" short in .050" increments. It's unbelievable how much that can affect lift.Lifter plunger and pushrod cup depth can vary by .100" or more,depending on the brand of lifter,as well.A tall lifter combined with a long pushrod could affect the overall height of that part of the valve train by as much as .500" from the extreme of a deep cupped lifter and a short push rod. Try those extremes and see what happens to lift. You might even run past the design limits of the rocker arm slot to further add to the madness,mayhem,and misery,not to mention the issues in teardown.

05-03-2010, 07:08 PM	#30
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,136 Likes: 172 Liked 705 Times in 219 Posts	Re: My Teardown @ St Louis..... I remember a 283 racer of immense merit from Div.6 years ago talking about how he went through about a hundred stamped Chevy rocker arms to get the 16 that he liked.It never hurts to have an assortment of push rods of every length from .200"long through .200" short in .050" increments. It's unbelievable how much that can affect lift.Lifter plunger and pushrod cup depth can vary by .100" or more,depending on the brand of lifter,as well.A tall lifter combined with a long pushrod could affect the overall height of that part of the valve train by as much as .500" from the extreme of a deep cupped lifter and a short push rod. Try those extremes and see what happens to lift. You might even run past the design limits of the rocker arm slot to further add to the madness,mayhem,and misery,not to mention the issues in teardown.