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need details of the build. are either of them spreadbore. Is your carb spreadbore




Carb and manifolds non spreadbore...
451 B engine with 440 crank 10.5 c.r., Edelbrock performer heads, Mr six pack cam, 750 cfm edelbrock carb.
2500 stall 3.23 rear. 26 inches tires.
Car Dodge Charger 67 weight 4000 lbs.
Actually with the M1 dual plane best ET 13.37 best mph 106.034
Do you think I can have gain with Weiand.