You can keep them going for decades.
I’m stalled at the TBI/Vortec stage of Cheveolet, and my best most reliable stuff still has carbs with HEI’s, but I’m not above dropping in a points distributor if we have an EMP attack.
Old Chevys Rock!
“Old Chevys Rock!”
I drive a 65 Chevy PU with 1,469,000 miles on it and a 36 3 window Chevy coupe with a 350 small block, 400 trans, power stearing, disc brakes, electric windows, and air conditioning!!