spread bore and square bore
#1
#3
Lets try that again.
A Square bore carb has all 4 throttle plates basically the same size Such as a Holley 4150/4160 or and Edelbrock/Carter AFB/AVS
A Spread bore carb will have 2 small throttle plated in the front and 2 large ones in the rear such as a Carter Thermoquad, Quadrajet, or a 4350 Motorcraft.
A Square bore carb has all 4 throttle plates basically the same size Such as a Holley 4150/4160 or and Edelbrock/Carter AFB/AVS
A Spread bore carb will have 2 small throttle plated in the front and 2 large ones in the rear such as a Carter Thermoquad, Quadrajet, or a 4350 Motorcraft.
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