For a basic 318 that should be a good one. Thanks for posting. Did you notice an increase in performance? How does it idle? Videos? Did you add anything to the combo? What is your combo? Sorry, a lot of questions but they will be asked I'm sure.
idles like stock with just a hint of lope, awesome vacuum, lots more midrange. It is just a stock 318 with an old holley street dominator intake and an Eddy 600 carb, but runs very strong
If you're talking about Summit K6900, my results are the same as yours. Stock bottom end and heads 74 318 with duals off manifolds. Performer intake with 600 Eddy. Pulls 2.76 gears fine although I'm stepping up to 3.55 in the near future.