I like #3 too with Indy sr heads.
#1 with the 700r4 low first gear & 6.50 I think would be too low even 4.56 I think would be too low. I had a GM 6.2 diesel (turbo) with the 700r4 and 4.10 30x10.5x15 tires and was good for towing (low first) and cruising (OD) don’t think you would use the OD at the track? Have you given any thought to the 200r4 they can be built too. Look at the turbo GN’s #1 would be a killer street/trail Jeep setup I would think tho
It’s funny that you would use the small cc (291) heads with a turbo and the bigger cc (090) on an NA motor. Again I don’t know what pistons you would be running with either one but thinking custom forged with all of them!
#2 with 5.40 gear (remember a 10” wide slick is about 28”-29” tall not 37”+ for Jeep tires) what will that be turning at the lights? At 8000 I come up with 128 mph and I think that does not count for converter slip! 4.56 gear@6500 is about 119 mph, 5.40@7700 is about 119 mph all with a 28” tire.
Run 4.56, Torker w/1” spacer (will it clear the hood?) & thinking a 750 carb.
“You say 360/9” (4.10)” Heck just a stock 360/auto/4.10 for a base I think would be a high 13 car. I know of a SC Hornet that is running high 13’s IIRC and I’m sure it’s a stock auto car.
I would say if you have the parts: 291 heads on a 360 stock lower end block, 292H*/.518 lift cam 2500-6500rpm (think it will fit with no machine work but check!), a beefy 904/3000-4000 stall, 4.10 would be a good base to start from too.
This is my opinion and you know what they say about them, they are like A** Holes every body has one!
If you want to play with some numbers for gears, tires, speed, RPM, ETC. try sites below
http://www.wallaceracing.com/Calculators.htm
http://users.erols.com/srweiss/index.html
We’ll get you on the right track yet
Dave ----