Chevy rocker arms...
#1
Chevy rocker arms...
I've been reading about the chevy rocker arms on Ford 300's. Does anyone have knowledge of this--how much further they allow the valves to open? And what would that translate to if you had, say, a 260 duration cam? With the chevy rocker arms, would it be like having a 262, 264, 266 cam?
Also, for a 78 300, what year and model chevy would the rocker come from. I'm assuming it is a bolt on operartion?
Thanks for the help.
Also, for a 78 300, what year and model chevy would the rocker come from. I'm assuming it is a bolt on operartion?
Thanks for the help.
#2
Join Date: Jan 2005
Location: The Vieux Ford, Kansas
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No change on duration only a change in lift. Say you have .3125 lift at the lobe a stock 300 rocker is 1:1.6 so you have .500 valve lift a BBC rocker is 1:1.72 so you get .5375. I have never done this swap on a 300 before but that is basically how it works, it doesn't change when it opens just how much. There is a good chance you will need custom pushrods to get the geometry right. Studs and guide plates will be required.
-Johnboy
-Johnboy
#3
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It is not something I am planning on using. However, I do find it fascinating that it can be done.
Good point, Dusty, about the wear.
Hey, my build is fine for me...plenty of power when I need it, and decent mpg too. It's everything I wanted. AND THIS TIME THE OIL PRESSURE WILL NOT DETERIORATE!!
Good point, Dusty, about the wear.
Hey, my build is fine for me...plenty of power when I need it, and decent mpg too. It's everything I wanted. AND THIS TIME THE OIL PRESSURE WILL NOT DETERIORATE!!
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