Good catch on the math.

I was comparing 1.825 (154.6 lbs) to 1.225, instead of 1.255. At the 1.825 that should put me at .095 to coil bind (check me).
Putting the lash back in puts the rocker ratio to 1.619, for whatever reason that makes me feel a little better.


We talked about the XX lobes but I think you did go away from the XX lobes because I was using a 1.6 rocker. I was planning to use the Cranes but I had better adjuster position with the CAT.
I have been very happy with it, I was tickled when it went 119 right off the trailer. I am still very happy with it, it just seems that its not very happy with me.

Machinist said he would have the spacers before the end of the week and I'll start shimming tonight. We have our first test and tune Sunday so hopefully I can have it back together by then and we can see if its happy.

Fast-Where do you shift yours?
I was actually following your dyno graph to try and get to a 4,000 fall back on the 1-2 shift.


Last edited by clovis; 02/23/21 08:14 PM.

'75 Plymouth Duster
Phase I 451 906/590/2-660 10.75/126
Phase II 451 Stage VI/590/1050 9.82/135
Phase III 383 906/Victor-Pump gas 11.30/119

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