Yea 20,000 is good lol. 100,000 on a 350 isnt bad either, it still has a long life ahead of it. Not saying it will last forever just because its a chevy lol..but they do last a good while. Or the ones ive been around have.
1954 Bel Air 4dr 1954 210 4dr 1954 Chevy Bel Air 4dr 235I6/Powerglide 1958 Chevrolet LWB pickup. 235I6/4speed granny 1976 Chevrolet Nova 350/400 4.88's 1976 Chevrolet SWB 4x4 1/2 ton. 350/4speed 33's 1979 Chevrolet SWB 4x4 350/4speed 3/4 ton axles/Tcase lifted, 36's 1981 Mazda RX-7 1996 Ford Ranger SWB Reg. Cab 2.3L/5speed