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Edelbrock says "do NOT use Edelbrock"

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  • #16
    My second spring is mounted in the typical Avanti spot...at the throttle bellcrank, stretched to the rear valve cover bolt. It actually works better than the two springs at the carb because I can use lower tension springs and get full closure.

    The position of the carb spring is at the upper hole now. The present adapter for the 700R4 TV cable is different than the one in the picture and I had to move the spring upwards.

    On my GM stuff I run the spring within the spring, it works well with a GM throttle cable.

    I had an incident, when I was a kid...63 Tri-Power Bonneville, center carb closed but at least one didn't. Good thing it was back in "the old days", before locking steering columns, threw it in neutral and shut it off, without disaster. I'll never forget hurtling down a side street in a 4,000 pound land yacht with the girl I thought I was going to impress screaming and then looking at me like I was the biggest idiot in the world when we came to a stop. (G)

    ErnieR

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    • #17
      Strange that they would not recommend a carby for supercharger use.
      I bought a #1406 recently and in the owners manual it has a little section on blown engines which states " Two model #1405 carburetors should be used on engines with positive displacement superchargers such as GMC 6-71 blowers or equivalent".
      It even suggests a calibration as the starting point for tuning.
      I realise that it may not be a fair comparison to the typical Stude setup, however it proves that the carby is suitable for supercharger use.
      I assume they will not recommend anything because it's going on a Studebaker motor and not the typical Ford/chev/etc application that they have done all the R&D for.
      That said I will be putting my Carby in an R3 airbox and onto my Avanti.
      pb

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      • #18
        Thats the difference between the drawn through and the blow through. A
        GMC 6-71 blower is a draw through, the carb has the fuel air sucked
        through it, thereby not needing to be pressure sealed. The Paxton is
        a blow through, which forces pressure into the carb, and requires that
        it be pressure sealed or leaks will occur :

        6-71:



        Paxton:



        Tom

        quote:Originally posted by 63r2
        I bought a #1406 recently and in the owners manual it has a little section on blown engines which states " Two model #1405 carburetors should be used on engines with positive displacement superchargers such as GMC 6-71 blowers or equivalent".
        It even suggests a calibration as the starting point for tuning.
        I realise that it may not be a fair comparison to the typical Stude setup, however it proves that the carby is suitable for supercharger use.
        '63 Avanti R1, '03 Mustang Cobra 13" front disc/98 GT rear brakes, 03 Cobra 17" wheels, GM alt, 97 Z28 leather seats, TKO 5-spd, Ported heads w/SST full flow valves.
        Check out my disc brake adapters to install 1994-2004 Mustang disc brakes on your Studebaker!!
        http://forum.studebakerdriversclub.c...bracket-update
        I have also written many TECH how to articles, do a search for my Forum name to find them

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        • #19
          I think the first concern that comes to mind in using any carb, behind a blower, is will the float collapse or distort..

          Bob Johnstone
          64 GT Hawk (K7)
          1970 Avanti (R3)

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          • #20
            I've found a good bit of help here. http://www.superchargerhelp.com/

            Somewhere I have all the mods necessary to use an Edelbrock in a blow-through without the airbox. I'll post it when I come up with it again.

            Jim

            _________1966 Avanti II RQA 0088______________Rabid Snail Racing
            Jim
            Often in error, never in doubt
            http://rabidsnailracing.blogspot.com/

            ____1966 Avanti II RQA 0088_______________1963 Avanti R2 63R3152____________http://rabidsnailracing.blogspot.com/

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            • #21
              Well, it took me long enough, but I ran across some info on carb mods. There is more, and as I refind it I'll list it.

              Here is an oldie but goodie

              http://www.vs57.com/carb.htm

              and another discussion forum

              http://www.superchargersonline.com/forum/

              Jim

              _________1966 Avanti II RQA 0088______________Rabid Snail Racing
              Jim
              Often in error, never in doubt
              http://rabidsnailracing.blogspot.com/

              ____1966 Avanti II RQA 0088_______________1963 Avanti R2 63R3152____________http://rabidsnailracing.blogspot.com/

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