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Old 03-22-2010, 09:17 PM   #1
supercheyenne1972
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402 swap for 350 -bad or good idea?

I have a 402 big block and 400 transmission out of 2-wheel drive 3/4 ton GMC Sierra - truck only has 62,000 original miles. I have 3/4 ton 4-wheel drive frame that is restored. It originally came with a 350 but does not have a motor now. I want to put it back original. Should I trade for a 350 or am I better off selling the 402 and buying the 350 outright. What would you recommend is the better way to go?
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Old 03-22-2010, 09:20 PM   #2
71blksuper4x4
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Re: 402 swap for 350 -bad or good idea?

Personally, you would probably be money ahead to trade for a nice 350 and a 4x4 350 turbo to put in the frame. There is quite a bit of work to get a big block in a 4x4 of our vintage. Trevor
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1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks)
1972 Jimmy (soon to be Hickey cloned)
1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track)
1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank
1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT)
http://67-72chevytrucks.com/vboard/s...d.php?t=624819
1989 V3500 Crew Cab (454tbi, NV4500, np205)
1970 Chevelle SS (LS5 454,th400,8track,buckets,tach)
:2004 Jeep Wrangler Rubicon (daily driver)

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Old 03-22-2010, 09:26 PM   #3
Number98
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Re: 402 swap for 350 -bad or good idea?

Well.... be sure to let me know if you decide to sell the 402/400 combo.
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