Re: comparing torque numbers
Unfortunately, today's dyno numbers can't be directly compared with the advertised specs for these engines when they were new. The reason is that the procedure for measuring hp and torque was changed in the early 1970s so that identical engines would produce lower figures under the new system. I believe the specific differences involved the accessory loads and possibly also the exhaust system.
The net result is that an engine rated say, 300 lb ft today will pull harder than a 300 lb ft engine from the 1960s. To get an accurate comparison you would have to re-test a vintage engine using today's methods rather than relying on advertised specs from when the engine was new.
Ray
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