Monte Lauer
Active member
I have both 4bbl manifolds, square and spread bore, for my 345. I am dropping in another 345 and I don't know which manifold I want to use. The new motor already has the square bore on it. Since this Scout is used for just driving around, no wheeling or towing, would the spread bore benefit me? Will I see a noticable difference in gas milage? I am ready to drop in the new motor and I don't want to change out manifolds unless it would greatly benefit me. Also. If this helps : 345, edelbrock 600 cfm, auto trans, 3.07 gears, 33" tires, highway driver.
Sorry if I put this in the wrong section, but a carb does bolt to the manifold.
Sorry if I put this in the wrong section, but a carb does bolt to the manifold.