Hope you get that carb setup working properly. I am kinda in the same boat. I have a 67 Barracuda Fastback with mid 1971 year 340 4-Spd that I just purchased a few months ago. I know that there are all kinds of variables used to choose a carburetor CFM properly depending on CID, RPM, Cam Grind, Heads, headers, Tranny and Intake etc but can anyone tell me what carb/cfm bore size came factory on these engines?
I read somewhere about some dyno runs that were being done on one of these little monsters and the article mentioned using a 800 CFM carburetor and according to the HP/Torque curve data the little engine was letting none go to waste. They actually printed that they were getting just over 400Hp and 440Ft-Lb of torque at 3800 rpm with no changes to the lower end. I was thinking of installing a 280H Comp cam (around .480 lift), headers, Edlebrock Performer Air Gap Dual Plane intake and 800-850 Holley Dual-line twin pump square bore carburetor. Would this bee too big of a carburetor? I ran a 750 Holley (Vac Secondary) square bore on a little 350/.040"+ Nova and it seemed to make good use of the flow with a similar setup.
I hate to pay $600.00+ for the new 850 cfm Holley and it be too much. I hear these are high winding little motors with stock 4.020" bore and 3.35" stroke, forged crank/ beefy rods. This is my first Mopar car, so I really don't know much about them. Would appreciate any insight. I will drive this car on occasions to cruise town just me and the wife. I'm sending her to paint in a few weeks (The car), haha.
Thanks
