NCRS leadership should take note here. I join the ranks of disgruntled members who wait on their magazines. What would it cost to raise the issue before the powers that be and increase the membership by 3$ (or whatever is needed) to get these magazines out First Class?
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1965 Holley Carb.
I would like to determine what the original carburetor for my 365HP motor should be. The "NCRS Pocket Spec Guide" shows it to be "List 2818-A" , and the "NCRS Judging Guide" shows "List 2818-1".Tha car was built in May 1965, so I know the "list" number should have a suffix, but which one of these numbers should be stamped into the air horn? Also, need to know the procedure for adjusting the choke rod for this carb. The Shop Manual Supplement 1965 has no spec. listed, and the diagram in the rebuild kit is rather ambiguous, stating, "disconnect choke rod at choke lever and hold choke valve closed. Center line of hole in choke lever should be parallel to bottom surface of throttle body or 1 23/32" distant from this surface." I understand the 1 23/23" measurement, but how can the centerline of a hole be parallel to anything??? Any suggestions or better methods appreciated. Thanks in advance.
Joe -
Re: 1965 Holley Carb.
I'm not an expert on these, but my understanding is that when these carbs were supplied to Chevy, they also had the GM part number stamped above the list number on the air horn: "3849804".
I'm not looking at the diagram of the choke lever, but I'd assume that an imaginary line passing through the center of the lever pivot shaft and through the center of the hole in the end of the lever is what needs to be parallel to the bottom surface of the throttle body.
I have a booklet put out by Chevy in 1966 about adjusting Holley 4-barrels on the car. It has several adjustments for choke linkage. One is that when the choke butterfly valve is held closed, and the disconnected exterior vertical choke rod (the rod coming from the choke thermostatic spring unit on the manifold) is pulled/held up to its highest travel, the bent-over end of the choke rod should touch the choke lever one rod diameter above the top of the hole in the lever; ie, the lower rod diameter should just touch/miss the upper diameter of the hole. In other words, when the thermostatic choke rod end is then inserted into the choke lever hole, the rod will not be quite able to reach the top of its travel (it will be one rod-diameter below full extension) because the choke lever reaches the fully-closed position first.Comment
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Re: 1965 Holley Carb.
Joe - I have a spare induction setup from a 65 365HP that was on my 67 when I bought it. It has the GM P/N 3849804 on the top line of the air horn, the LIST 2818-1 on the second line, and the third line is a 482 for 1964, August, 2nd week. Email me off the boards if you have specific questions...CraigComment
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