Quote:
Originally Posted by tc
Well, I used information I read on this forum using the search function to set the 041 cam ICL. . I think 109 ICL was on the cam card and that is what I set it at. Been a few years but I think I used a 1 1/2 or 2 degree cam key ( I made my own ) to arrive at that 109. Also, I know the chain had about 1 degree slop, so I needed to take that slop out with the cam key and the cam was off a little.
As stated before, the cam has plenty of low end, but does not pull at the high end ( last half of the track ) compared to my old cam. Picture of car with a 428, using the 041 cam, 670 heads ported by me, 9.7 compression ratio. This car is a blast to drive around town, especially from a stop light!
Hey, what were you saying about lifters and 7000 miles? I thought I read that from one of your posts.
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After some more reading and memory searching I have come up with this: 1968-70 RA4 T 308/112 .470 87 320/115 .470 # 9794041 cam. I believe that the Melling factory did this : 115-112=3 divided by 2 = 1.5 +112 = 113.5 ICL. So "straight up" installation of the 041 cam I bought has the ICL built into the cam outright. Thus, one lines up the dots at 12 o'clock on top of each gear, with the piston on top dead center of the compression stroke.
Someone said to Degree the cam first , then install the 041 cam at 109 Degrees ICL. Thus, I will set the Crank pulley using the #4 setting giving me 4 degrees at the cam. Looks like this 109.0 +4=113. Also I might get the roller 1.6:1 inexpensive rockers and Rhoads Variable lifters. Using the 1.6 not 1.65 rockers should leave me without spring issues at the lower pockets having to be modified? Am I forgetting anything?
Also, I Installed the 041 cam a few years ago With new Johnson lifters , timing Gears (first set) semi adjustable, chromemoly HD push rods and 7/16 hardened rocker screw in studs from Butler and new gaskets. I bought the melling 041 cam through Butler set up from the factory as stated above so all I had to do is install it with dots at 12 o'clock each. I now have about 7,000 miles on these new parts over about the past 5 years.