[Formulabruce]

2.60 rear gear. Can't find any info on that, but I know they tested 2.56 in 73 and 4. Of course Pontiac had the best MPG on any 350 by 76 with the 2.41 gear.

[bird72]

I am guessing 2.56. A big torquey engine can work with tall gears, where a revving smaller engine will bog more (IMO). I have 2.73 and calculated 150mph plus at 5200rpm, if I remember correctly. 2.56 has to be 160 / 170mph kind of stuff. If I wasn't lazy I'd go to an online calculator.

[Mr Anonymous]

I primarily played with Gbody (essentially 78-88) and they came with a crazy bunch of tall ratios. 2.14, 2.29, 2.41, and 2.56 were very common. If youre being measured by grams per mile on emissions, by God just spin that bitch slower, right? Well, 2.56 with 200-4R is crazy, its like 1.7:1! I made money for college by buying these cars blown up, and swapping in some common v8s of whatever origin. Friend of mine did the same, and we ended up with some hilarious combos. My personal favorite that we did together was a 2.14-geared car coupled with a 403 out of a 79 olds 98. With a minor amount of engine freshening and a head swap, and a mystery torque converter, it was on paper the worst possible combination of parts. Reality was that it was a blast to drive, and on the highway late at night, it was like ludicrous speed from Spaceballs. I think we went plaid a couple of times.

[fiedlerh]

The car is local to me. The owner would display it at our local car show every year, but Covid has cancelled it for the last couple of years. I assume he still has it, but I don't know him personally. He is big into racing Vipers nowadays. It is unique in that it has a Delco Engineering light sensor of some kind (for the headlights?). Maybe some else remembers more details about it.

The big problem I recall was the radial tires that tended to come apart at high speeds. The sign board says 3.08 rear end, but who knows what it had back then.