General Category > Quadrajet Carb Talk and Tips

Base setting for throttle angle

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Cliff Ruggles:
Doubt if you'll see too much reading on the subject as for the most part the range of adjustment is very limited and there are only two options for the approximate starting point......Cliff

Pav8427:
Cliff, since this is a somewhat tunable feature. Do you think for this application, what I have will be usable? Or would you suggest a few degrees more or less?

Cliff Ruggles:
Having a later opening point is most advantageous for towing and possibly Marine applications with big CID engines. 

For most other applications it's really nothing to worry about. 

My daily driver (1974 Ventura) has a 455 engine in it and I have PLENTY of available throttle on the primary side for "normal" driving w/o the secondaries and my carb has the more common linkage that opens them earlier.......Cliff

Pav8427:
Sounds good. I will leave it where its at. Thanks.

Frank400:
In my opinion, it does not matter much on a street car.  What I mean by there is I'm either cruising in town up to maybe 40 mph, on the primaries, either cruising on the highway between let's say 55 and 70, still on the primaries, and when I go on the secondaries, I smash it to full throttle and it takes a fraction of a second for my foot to go to the floor, so it doesn't really matter if the secondaries open after 35, 45, 55, or even 60 degrees of primary travel.

   On a boat or a truck carrying heavy loads, that's an entirely different story...

     Frank.

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