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Old 01-29-2018, 08:43 PM   #18
NC_John
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Join Date: Jul 2013
Location: Rockwell, NC
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Re: Longbed driveshafts

Quote:
Originally Posted by PGSigns View Post
John what max rpm did you use? Predicted rpm at 160 at 1 to 1 or the max you plan to turn your engine? My little calculator shows 8770 in 4th gear and a bit over 7000 in 5th for 160
Jimmy
They came up with 8755 rpm. Not sure what calculator they used.

I ran an online calculator I found to figure out theoretical top speed and it was over 240 mph. I think I used a max rpm of 6,500 rpm and even with the 4.56 rear, the double overdrive (0.50 6th gear) sets it up for bonneville. I'd probably need 1,200+ hp to get THAT kind of speed out of this big brick so figured 160 mph was reasonable (if I was stupid enough to try to get going that fast).
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