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how high can u rev??

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Old Jul 25, 2004 | 04:46 PM
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78_ford_F150
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how high can u rev??

How high can u safely rev a 351m that is stock i have been shifting at 4000 is this safe.
 
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Old Jul 25, 2004 | 09:15 PM
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you can go that high for a shift, but i wouldnt think you would need to since alot of the power is down low. I would say make a little accomodation to stay on the lower side of 4000 with a stocker if you dont need to be up there. Try 3 to 35
 
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Old Jul 26, 2004 | 08:57 PM
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Thanks its just that when i shift that low with my c6 (in a race) it takes longer to get my speed up my motor has no power but that is why i started a build with a 400.
 
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Old Jul 27, 2004 | 11:07 PM
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You can spin a stock 351M to 4500-5000 rpm pretty easily. They are tough and hold up well. To make it better you can fix the timing chain and add a bigger carb with a better exhaust and it will really wake her up. Keep it under 5500 if you like your rods and valves in one piece. The stock exhaust valves sometimes lose their heads above 5K rpm.

good luck and beat it like you stole it.
 
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Old Jul 28, 2004 | 06:16 PM
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74 F100 351m
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mine is NOT stock it will spinup to 6000.
 
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Old Jul 28, 2004 | 07:42 PM
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kool thank
 
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