Small block 289 dual quad intake

[pbf777]

Seems like the Carter carbs would be rev limiters too.

I would think over 9oo cfm for a 289 would be sufficient-

     In most instances (3258 & 59S ) the AFB carburetor utilizes an "Auxiliary Air Valve" on the secondary venturis, this regulating air flow volumes regardless of the mechanical linkage attached secondary butterflies' positioning and this is intended to solve the problem of possible excessive carburetor capacity potential; but if not with some tuning effort, will also often limit the engines performance capability to some degree.   

      And of those carburetor types which require an air pressure differential function in order to perform the work of operating throttles, generally these will provide less performance potential.   

     Scott.     

[427heaven]

This project I am more interested in originality then all out performance. Just in the few years of the early 60s to the mid to late 60s pandoras box was opened and performance was on a rocket ride. Thanks to those that responded!

[shelbydoug]

Any way you look at it, it's super cool. Wear a bungee over your toupee so it don't get sucked off!

[427heaven]

No toups here... Picture 70s rock star... blown fly away, wind blown hair at full throttle blast in an open roadster. MAYBE semi rock star!

[Royce Peterson]

     In most instances (3258 & 59S ) the AFB carburetor utilizes an "Auxiliary Air Valve" on the secondary venturis, this regulating air flow volumes regardless of the mechanical linkage attached secondary butterflies' positioning and this is intended to solve the problem of possible excessive carburetor capacity potential; but if not with some tuning effort, will also often limit the engines performance capability to some degree.   

      And of those carburetor types which require an air pressure differential function in order to perform the work of operating throttles, generally these will provide less performance potential.   

     Scott.     
[/quote]

The thing is, single 4V ratings will not be the same as an 8V rating for the same carburetor. I don't know the formula off the top of my head but the number is less.

[427heaven]

My guess if SHELBY thought that they were good enough for Chryslers 413 Max wedge engines, they should work well with his high strung 289s?

[pbf777]

My guess if SHELBY thought that they were good enough for Chryslers 413 Max wedge engines, they should work well with his high strung 289s?

    My guess is that it was more a case of what was available, reasonably applicable and affordable (cheap!  ); and as 1963 was Chrysler's last hurrah with these carbs, so there might have been some leftovers available at Carter languishing in the warehouse with no apparent destination that might have been had at a discount? 

    B.T.W. These #3258 & 59S's were for the 1962-63 383 & 413 c.i.d. engines with the "Long-Ram" & "Short-Ram" (still "long" )  over the valve cover, left & right, intakes (also known as: Plymouth's "Sonoramic Commando", Dodge's "D-500 Ram Induction", and over at Chrysler "Ram Induction"); the "Max-Wedge" 413's utilized the #3447 AFB's, and were approximately 600 C.F.M. carbs. 

    Scott