boese1978

Currently running a Holley St Avenger 670. Build is stroked and bored 350 to 380, aluminum heads, full roller, 3.42 gears etc. Very very happy with the Holley, bolted it on and very very little additional tuning was needed and it has worked well for me. just re reading notes from Mark from way back when I built it, his comment was the 670 is a little small. Wondering what would be a good "moving up" choice? How much "seat of the pants" diff could be expected by moving up in CFM? Looking for easy, out of the box swapping.