The fact that it goes 85 is not an engine electrical problem. The speedometer only goes up to 85. I am sorry if my initial point of speed was confusing. It sounded good in my head but obviously not so good on "paper".The fact that it goes 85 is not an engine electrical problem. The speedometer only goes up to 85. I am sorry if my initial point of speed was confusing. It sounded good in my head but obviously not so good on "paper".
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Here, is what I think you are asking. The TBI intake from a 91 will fit the same size engine from 88 to 95. The Vortec didn't come out till 96 I believe. So if your 91 is the original engine then it is not a Vortec motor. If you want to swap your 5.7 with another 5.7 (5.7 = 350) Then the 88-95 should work, Just double check your sensors and locations as the plugs may be different and or in different locations. I know my 88 GMC and my 94 chevy (both K1500's) were a little different. Hope this helps.
To find the FLASHER on 1994 GMC Truck C1500 1/2ton Sub 2WD 5.7L TBI 8cyl. the Flasher is located:
Front seating area, driver side, under dash, driver side of steering column, mounted in relay bracket
Sound like it could be a clog fuel filter, have you check it, if not remove and check to see if it's clog, replace it if bad, fuel filter is under your truck, on drives side, on inner frame rail.
if your o2 sensor is reading too lean then you have a vacume leak spray brake cleaner on all your vacume hoses one at a time if nothing then spray it around your intake manifold gasket they are usually the culprit
Different computer for sure, and probably a bunch of sensors, distributor, wires , starter, plug - ins, etc. The only way I would ever attempt that is if i had a whole perts truck to pick off of. You'd be far better off to fix the head gasket, sell it, and buy a truck with a V8 in it already, than to try that.
The fact that it goes 85 is not an engine electrical problem. The speedometer only goes up to 85. I am sorry if my initial point of speed was confusing. It sounded good in my head but obviously not so good on "paper".
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