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holley for boosting....... maybe
https://slantsix.org/forum/viewtopic.php?t=41949
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Author:  Volare4life [ Sat Sep 18, 2010 8:14 pm ]
Post subject:  holley for boosting....... maybe

hey guys as some of you know i had got a edelbrock carb 1405 600cfm carb for free from a buddy of mine who very foolishly bought a holley 80457-S reman carb trying to solve his "excessively rich" problem, dumb i know, silly slowmaro owner haha, any way he couldn't get the car running right, and kept messing with it until he gave up and called me, so i told him i would swap out his carbs, i keep the holley and he gets his old edelbrock back, swapped them, played around with the eddy, his timing, and found a few vacuum leaks and fixed them.

so now i have a holley 600cfm single feed inlet vac secondary, non float adjustable square bore straight leg electric choke carb. before i even contemplate selling, can i make this carb work on a boosted motor ??

I would like to change from vac secondaries to mechanical

is a single feed inlet suffiecent ??

can it be converted to a double pumper, and is a double pumper overkill ??

i am assuming the removal of the electric choke is easy enough, its florida i never get cold enough to matter lol

or should i sell it for what i can, and put my money towards a 390 ??

-Mike

Author:  1974duster kev [ Sat Sep 18, 2010 10:17 pm ]
Post subject: 

Vacuum secondaries can't go mechanical they have different drilled and designed to run vacuum secondaries unless theres some mod you can do i'm not sure

I dont think that carb would like seeing boost pressure becauxse of the vac secondaries also

Kev

Author:  DusterIdiot [ Sat Sep 18, 2010 10:32 pm ]
Post subject:  Time to hit the books...

You'll need to bone up on the Holley carb using one of two books on them...The Emanuel book does have a section on how to modify the holley for use with boost (blow and draw through).

80457 isn't a bad carb, I use one that has been modified with annular boosters in the hpak duster...used to be only my drag carb...but it's serving daily driving duty at the moment...

-D.Idiot

Author:  Joshie225 [ Sat Sep 18, 2010 11:35 pm ]
Post subject: 

You would have been much better off with the Edelbrock for blow through use than a vacuum secondary Holley. Studebaker used AFBs on most of their Supercharged cars.

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