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454 SS Silverado, anyone remember these?


AWW$HEEET

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IIRC, the reason they had such shitty fuel mileage was that they pretty much suffocated the motor for emissions. I'd bet you could actually gain mileage as well as power (to a point) by opening up the intake and exhaust and tuning it properly.

 

this is very true. With just an Intake, exhaust, and air intake mod, i've seen guys get 15mpg on a regular basis. Which isnt all that horrible, I've seen modern trucks get much worse than that.

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