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Old 11-13-2015, 09:16 AM   #9
70STOVEBOLT
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Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,538
Re: 250 to 402 swap question

I have now completed the swap. I had a local driveshaft shop shorten and balance the shaft. I have run it up to 4000 RPM with no issues. Not going to be doing any racing with it so high RPM stress will not be an issue.
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast"
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2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear
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