I think you would be better off with the super comp 1 3/4" since you have a 4000 stall and fully ported #48 heads. The other thing is that the 3:42 gears seem like a missmatch. I would go 3:73s. That cam is not a real high RPM cam so the 4,000 stall I believe you will loose alot of power under the 4,000 rpm curve. You are basically setting up your car like mine. I have the same cam with 3,000 stall and 3:73s, street dominator and holley 800 dp, 1.65 roller lifter . I dont have ported heads though and I am doing 12.60seconds on a high temp track. air around 90 with track temps way higher. These opinions are just mine and you need to find out how your car goes once built. when I first built it and was doing 13.7s. Changed to an auto and gained .5 secs so 13.2 . I had a small bog with my car so I changed to a 3,000 stall from a 2200-2400 and then went with 1.65 roller rockers and an 800 DP from a 750 and went down to a 12.92. My last changes were Aluminum rims, and drive shaft and now I do 12.60.
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