JoeH,
Ok that makes sense, I can get my computer to give 17.91 at 74mph for your truck, guessing the weight, area, and CD. The engine program I wrote gives 174hp gross, 146hp net, and 109hp rear wheel.
If I use a bone stock 250/"155" hp instead, the same truck runs 18.36 at 72mph so that is the gain I calculate from your homemade 3*1v and the cam.
Questions:
1. When you said you tried headers that ran the same but were "too big", what was too big, ie what what the primary diameter and lengths if you know?
2. On the homemade 3*1v, was the whole intake fabbed or did you just mill the stock iron ends flat, and then what did you use to mount the two end carbs? (I am thinking of making one myself!)
thanks again
