Here is my 1967 Chevelle

[Kaboo]

Well, I have given up on my home made mufflers. I am going to get some 3.50 inlet / outlet mufflers. Also going to do the H pipe. I spoke with my engine builder and he told me to make the H as close to the headers as I can. I got a breakdown on my H.P. and torque while I had him on the phone. Top horse is 570 and torque is 511. Best shift point should be at 5500 to 5700 with 533 horse and 511 torque. I have a 2800 stall, and should be making 413 lbs. of torque at that point. My converter should flash around 3400, my guess would be around 450 torque at that point.