Fresh Air Inspector
Well-Known Member
Hello All,
It has been awhile, lots of projects competing for my attention. Currently I'm working on assembling my 1988 318LA engine, this is a roller cam version but NOT a Magnum.
The engine has a Howard's cam (I - 220 degrees, 0.475 valve lift, E - 225 degrees, 0.500 valve lift, both @ 0.50, LSA 112 degrees), Hughes Engines roller lifters (HUG 5006), and Hughes Engines dual valve springs (HUG 1110P, coil w/beehive damper; 120 lb. closed, 300 lb. open). Although Howards recommended 140/145 lb. closed, 350/380 lb. open.
I'm struggling with what to do with the pushrods, rocker arms, rocker shaft and rocker shaft bolts. I don't believe these components will handle the valve spring load, especially the stock pushrods (6.777" length, 5/16" diameter, ?? wall thickness).
So, any feedback from those of you that have been there before. Looking forward to the feedback.
It has been awhile, lots of projects competing for my attention. Currently I'm working on assembling my 1988 318LA engine, this is a roller cam version but NOT a Magnum.
The engine has a Howard's cam (I - 220 degrees, 0.475 valve lift, E - 225 degrees, 0.500 valve lift, both @ 0.50, LSA 112 degrees), Hughes Engines roller lifters (HUG 5006), and Hughes Engines dual valve springs (HUG 1110P, coil w/beehive damper; 120 lb. closed, 300 lb. open). Although Howards recommended 140/145 lb. closed, 350/380 lb. open.
I'm struggling with what to do with the pushrods, rocker arms, rocker shaft and rocker shaft bolts. I don't believe these components will handle the valve spring load, especially the stock pushrods (6.777" length, 5/16" diameter, ?? wall thickness).
So, any feedback from those of you that have been there before. Looking forward to the feedback.
