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  1. 1994 gmc 4x4 350 to 454 swap.

    Chevy Silverado Forum (GMC Sierra)
    Hey guys So I have a 94 gmc 4x4 . With the tbi injectors or throttle body. Anyways at the moment it has 206,500 on the odometer. Lately it has absolutely no guts nuts nadda I start off from the stop sign at a snails crawl.. no power .I've done spark plugs distributiter cap Rotor ,timed it...

  2. TBI 350 Intermittent rough idle/near stall taken out of gear SOLVED(kinda)

    GM Powertrain
    1991 K5 TBI 350 with SM465. One out of five times the idle will seem to fall out when taking it out of gear and coming to a stop. It feels like a misfire. It will correct itself after about 5 seconds, can usually correct it a little quicker by revving. Less commonly, it will do this going...
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