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BRUCE PARSONS · 05-06-2010, 08:23 PM

[QUOTE=Travis Miller;186147]Bruce, rocker arm ratio is very simple to check. One only needs to know two numbers. Cam lift read at the lifter and valve lift read at the retainer. Simple math gives the ratio.

That will not give you the true rocker ratio. That will only give the ratio as ran. As you know cam base circle, lifter seat height, pushrod length, and valve stem height figures into the sum. I suppose you have all the "stock" dimensions for that too. You'll need to have an "off the car tool" to check the rockers the right way...not the NHRA way.

05-06-2010, 08:23 PM	#6
BRUCE PARSONS Banned Join Date: Jun 2004 Posts: 32 Likes: 0 Liked 0 Times in 0 Posts	Re: Rocker Arms [QUOTE=Travis Miller;186147]Bruce, rocker arm ratio is very simple to check. One only needs to know two numbers. Cam lift read at the lifter and valve lift read at the retainer. Simple math gives the ratio. That will not give you the true rocker ratio. That will only give the ratio as ran. As you know cam base circle, lifter seat height, pushrod length, and valve stem height figures into the sum. I suppose you have all the "stock" dimensions for that too. You'll need to have an "off the car tool" to check the rockers the right way...not the NHRA way.