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  1. C

    Advice for swapping out TH400 for a 700R4...

    Ok, I know this might sound crazy to y'all, but I want to take the 3-speed out and put in a 4-speed trans. The RPO tells me the truck originally came with a TH350 (has provisions for a kickdown cable too) but at some point the PO put in a TH400. Why? Anyway, I don't haul heavy loads or tow...
  2. C

    Timing mark on 4.3

    Can some one point me to "0" degrees? It's on a 1986 C10 with a 4.3 engine..

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