I have a '59 3/4 Chevy 4x4 with the 235, and with the 4.57 gears, the little six is all it needs, easy to maintain and it'll cruise at 55-60 comfortably
The '66 K20 w/ +.040 but otherwise stock 283 winds up and runs out of steam pretty quickly, with the 4.57's again,but drives just fine
The '66 4x4 Suburban with Goodwrench 350 long block and stock "283" intake and exhaust manifolds w/ 3.73 axles is by far the most "powerful" of the bunch. Those 67 extra inches and easier ratio make a ton of difference.
But, we have a 1963 292 equipped K10 w/ 456 Tony and cannot wait to drive that Big Six and see how it goes...
I think I'd stick with and enjoy the 235 in yours, were it mine...
