Carburetor Help??!?!?!?!?!

Remember, the stock '60 Valiant setup was a 3.55:1 rear axle and a 23.7" tire diameter, which meant the 170 engine was turning 3021 revs per mile in 3rd gear with a manual transmission, about 3500 revs per mile in 3rd gear with an automatic. Split the difference for purposes of this conversation and call it 3300 revs/mile.

That's 3300 rpm @ 60 mph, 3850 rpm @ 70 mph, and 4400 rpm @ 80 mph (remember also, many Western states had no daytime speed limit on the interstates back then).

The 170 is happy to rev. It's just prevented from doing so by small intake and exhaust systems and a tiny camshaft in the stock '60 installation.