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Old 02-08-2016, 09:52 PM   #9
Mike C
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Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,740
Re: Transmission options 69-72 Blazers

Are we talking 4x4's only? My '69 short step is a factory TH350. My '72 3/4 ton C20 Suburban with a small block is a TH350. My '70 GMC C2500 big block was a TH400.

But the TH400 was NOT available in a 4x4 until at least '73 and I think it was actually '77 with the K30. Other than that, they were TH350 and mostly NP203 through the 70's.
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