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01-16-2016, 12:37 PM
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#9 |
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Senior Member
 
Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 7,066
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Re: small block to big block?
I went from a 250 to a 402. Bought all of the big block specific parts and just shortened the stock driveshaft to 59.5 inches. Used the stock mounting location also. It was straightforward and not difficult. Mine has a TH400 trans. I already had a 3-row radiator and the engine runs at normal temp and has not gotten hot once. I have not hauled a load with it or pulled a trailer so I cannot speak to those conditions but I don't believe it would overheat. Good luck with your swap.
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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