And 8:1 compression. And certainly NOT 31" tires and 4.10 gears with a loose converter. Nobody said it couldn't be "done", but the granny gear 4 speed doesn't like that kind of 5500+ rpm powerband. My motor pulled hard to 6500 which was zero to 50 pretty much in 2nd gear. And then it takes two seconds to shift to 3rd. Or you can try and shift hard and come up off the clutch. But that usually results in a broken yoke on the 12 bolt and at least one sheared off cap on the u-joint.
Don't ask how I know this or how many times it happened...
The Jimmy went like stink with the big cam, the 750 Holley, and the high rise intake, even with the 3.07 gears. At least just using 2nd gear for the stoplight drags, but did not tow well at all and got crappy crappy crappy mileage.
In fact, it went in the truck the same way it came out of my Camaro, but for all the reasons it worked well in the car running 14 flats, it stunk it up in the truck for driveability. But 4.10 gears with 26" tall tires and the super T-10 in the car was a different animal. I "undid" all of those things as noted above, and it made for a pretty good truck motor. Not mud bogger or drag racer, but drive it all the time and tow boats, project cars, tractors, etc.