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Re: 70s/80s K10 Blazer or Suburban Axle Swap to '63 C20
Sounds like a cool project! The suburban is a 73-80. I suspect the blazer is an 81-87 but that's just a guess. For gearing, I would expect they're probably both 3.73 because I've had a 73 blazer, 88 suburban and an 86 Jimmy with a 305 (the others were both 350s) and all three had 3.73 gears. I'm sure other ratios were available though.
The rear axle won't just bolt up unless your 63 has leaf springs instead of the trailing arm suspension. I think there's an excellent thread on here somewhere where someone did a conversion on a 60's suburban.
Good luck!
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65 C20 Fleetside longbed, 350, turbo 400, 8-lug disc brakes, power steering, air conditioning - Totaled by a guy running a red light. Pulling parts off the carcass for my next truck
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