SBC torquey tbi build or?
Okay, so it's winter and I get these wild hair ideas about giving my old 91 V3500, square body, straight front axle Chevy pickup, a new lease on life with a little more power in the towing department, as I intend to get a tilt deck trailer and haul my 64 Elky to the Vegas strip soon. Truck is rust free and has 125k miles on it. I've driven it long distance ,multiple times, and it has never let me down. It just doesn't have a whole lot of towing pwr being a 5.7 tbi.
Here are some of my options:
1. It's currently a 350 tbi, yeah I know, pretty wimpy in a srw 1 ton 4wd. Should I build a 400 sbc and run the tbi system? I thought about a dart shp block and build a 400 or 421 torque monster? Truck does have a kind of rare combo with 4L80-E and NP205 T.C. The OD makes it nice on the freeway for sure. Will do 80mph with the 4.10 gears no problem, empty.
2. I do have a high mileage,complete but running 91 454 Gen V tbi from a K3500 truck. It would have to be rebuilt, and I would probably just stroke it with a cast 4.25 crank and make a 489/496 torque monster?
3. Find a 12 valve Cummins and do the conversion? Could be pricey, if done correctly?
4. Lastly, and I've been in denial about this one. Sell the truck and step into something more modern, like a 3/4 ton Duramax, Powerstroke or Cummins?
64 El Camino Pro street, 496, T-400, 9" 3.73
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