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#32030 03/22/2002 7:44 PM | Joined: Jan 2001 Posts: 687 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 687 | What's a safe rpm range for a stock (meaning stock cam/rods/crank plus headers and 4 bbl. intake)? I'm looking for a range that you could safely drive for 2+ hours with no worries (i.e. cruising rpms).  Thanks! -ftyler | | |
#32031 03/22/2002 10:23 PM | Joined: Jan 2000 Posts: 1,586 Extreme Gabster | | Extreme Gabster Joined: Jan 2000 Posts: 1,586 | GM lists the governed speed in the 3700-3900 rpm range.Bet there are plently of 292 powered C-50 farm trucks run wide open down the road for a few hours at a time.Probably something in the 2500 rpm range is easier on the engine. | | |
#32032 03/23/2002 5:40 AM | Joined: Jan 2002 Posts: 17 Apprentice | | Apprentice Joined: Jan 2002 Posts: 17 | If the 292 has a fiber timing gear (stock in lots of 292's to keep them running quieter) I definitely wouldn't want to run it over 2500 RPM for an extended run; I don't think I would run it much above 3000 RPM for a short run if the gear is old because it is so easy to shell it out. I would much rather hear the gear noise of a steel gear than that sickening sound of silence when a fiber gear looses it's teath and the engine quits when the valves and oil pump quit working.
PS. Massey Fergeson used the 292 engine in their 410 combine which ran the engine at a constant 2500 RPM.
Kenneth L. Hollingsworth
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#32033 03/23/2002 5:05 PM | Joined: Apr 2000 Posts: 81 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2000 Posts: 81 | I don't my rpm but I drove a, 292 179 miles home the day I bought it. At around 60 mph for at least 3 hours! She was singin pretty good but there doesn't seem to be any new noises coming from the motor. Of course this motor was rebuilt about 10 years ago, so I don't how stock she is as far as the timing gear goes. 
If at first you don't succeed, get a bigger hammer.
1941 Pontiac business coupe
1947 Chev Coupe
1969 GTO ragtop
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