Thanks for the input, Bill. I think the standard two speed was 6.40/8.72, so with a 9.00-20 tire 55MPH should be about 3,000RPM. Good to know I can spin a 235/261 up to that if I ever get one.
My question I guess, is more aimed at what it takes to actually cause damage. SBC's for example can take 3,500+RPM at cruise, and that can be seen in boats; but a 292 was a one year deal as a marine engine. Normally I'm very easy on stuff, but I really like knowing the limits beforehand so I can determine when I'm actually beating up on it.
Last edited by 66Submarine; 05/31/2013 9:49 PM.
Some of my crap:
1963 C-30 flatbed dually 292/SM420
1965 C-10 LWB fleet 250/column shift 3 speed
1965 C-30 9' stepside 250/SM420/4.10 gears (my DD)
Website I made for my crap:
http://www.66submarine.com