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Dwight Southerland · 02-06-2014, 06:52 PM

Yes . . . what some are doing.

Back in the day of modifieds, they would use the body of a Holley list 4224 660 cfm carb fitted to an 850 double pumper base plate. The carb body would be reamed from the bottom to match the 1 3/4" size of the throttle bores. Voila! The new "blended" carb would flow in the 750-775 cfm range, but keep the small venturis for crisp throttle response and high quality fuel atomization for under 300 cu in engines. I suspect the difference between a 1.686"/1.093" carb and a 1.686"/1.186" carb would not be as great as one would fear.

02-06-2014, 06:52 PM	#380
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 2,001 Likes: 64 Liked 780 Times in 194 Posts	Re: Some "Dime Rockets" for the 4TH! Yes . . . what some are doing. Back in the day of modifieds, they would use the body of a Holley list 4224 660 cfm carb fitted to an 850 double pumper base plate. The carb body would be reamed from the bottom to match the 1 3/4" size of the throttle bores. Voila! The new "blended" carb would flow in the 750-775 cfm range, but keep the small venturis for crisp throttle response and high quality fuel atomization for under 300 cu in engines. I suspect the difference between a 1.686"/1.093" carb and a 1.686"/1.186" carb would not be as great as one would fear.