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400sb vs 350 4 bolt main?

Discussion in 'Trucks and Trailers' started by -, Oct 15, 2000.

  1. Guest
    Posts: 0

    I have an opportunity to swap my 350 4 bolt main for a sb 400. Would this be a good trade? I know I can get more torque & hp out of a 400, but is it a reliable engine? Will it get crapper gas mileage than a 350? The 400sb is currently in a 75 blazer. Seems to run pretty strong. Let me what you guys think.


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