Dennis,

I replaced the "hidden screw" on my 3 carbs with a hex head bolt (#12 I think).  When I want to change jets, power valves, etc, I pop out the accellerator linkage, remove the 2 back screws and the under neath hex bolt and remove the crab from the base.  No need to remove the linkage.

POP

POP

Dennis:

I didn't think about it, but after reading your comment I realize that it seems like it's 4 feet from the outside edge of the fender to the center of the engine on my '53 truck also.  The 3-2s I had were on a '56 Ford.

John

John - "The Hoosier Hurricane"

John, no the heads are still at the machinist. He said we have time before columbus, but I'd like some seat time. Have to squeeze it in between our camping trips.



I have a screwdriver bit that fits in a ratcheting box wrench, but you still have to lay on your gut.




  Dennis in Lititz PA

Dennis,

        I wouldn't either right now. I remember the jet change issue, had three '97's on a Pontiac back in the '60's. Even then they were a hassle, and I was much more flexible than I am now!

       You may have hit a combo that works, no, You have hit a combo that works. I have found that most engines will make more horsepower when the jetting is correct, to borderline lean. They actually will lose a little power to the rich side. I don't follow my own theorys with the blower motor. Figure that melted pistons are more important than horsepower in this example. 

Frank/Rebop

Bristol, In ( by Elkhart) 

Dennis:

Way back when I had 3-2s, I had a right angle screw driver that I used to change the jets by only taking off the carb tops, didn't have to remove the complete carb.  By the way, did you get the bigger heads installed yet?

John

John - "The Hoosier Hurricane"

Frank, I won't do anything with it for now. The carbs are so close together, you can't change jets without pulling them. Then you have to nuts with the linkage. It's working good for me, I hate to disturb it. No dead spots on the throttle, so for now no change.

  Dennis in Lititz PA

Dennis,

        I would have thought that the center carb would have been the 51's or actually whatever it originally had. Especially when you think it still has the power valve. Might try that, could help the mileage. The end two would want a couple sizes , or so, bigger than stock, because you eliminated the powervalves and would supposedly need to accomodate that. However, if you're already rich, maybe just lean the center carb a little and see what happens.

Frank/Rebop

Bristol, In ( by Elkhart) 

My thinking was, if I dump 2 more carbs on a 239 I'll give it too much fuel. So I went with the smallest jets I had.



I can't fasten a mirror to look at my exhaust, but I've been told I have black smoke when I tramp on it, so it's getting enough fuel.



It's working ok for me. Don't know.

  Dennis in Lititz PA

Must be magic !! I thought the same as you

55Birdman  Hickory NC

Now that's interesting. I'd have done just the opposite. Leaner on the main carb and richer on the secondaries!

   Wonder why that works?

Frank/Rebop

Bristol, In ( by Elkhart)