GM Square Body - 1973 - 1987 GM Truck Forum

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  What have you done to your square lately??

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  Garage
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  1987 454 TBI stalls at idle after a short time

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  87 or 89 Unleaded?

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  Engine & Performance
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  Heavy vibration at highway speed under load

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  Differential & Driveline
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  Bvllsh!t on craigslist.

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