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Re: 90 454SS vs 94 Lightning - TrucksTV
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Originally Posted by speedracer326
It had the Rudy package. Remember how the LT1 Caprices/Impalas varied by up to 30hp from the factory? Some were cut better than others. . .
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Depends on how the tolerances stacked up. Some vehicles just flat run stronger than other identical vehicles. I've seen TBI trucks leave the factory with fuel pressure in a 9-14 psi range!
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1983 G20 Conversion Van, 383 TPI, 10.5:1 compression, Custom Reed Roller cam, Ported 906 Vortecs, Doug Thorley Tri-Y headers, dual 2 1/2" exhaust, 4L60E, 3.08 gears. 7427 PCM in MPFI Mode
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