I use a 160, I have 10:1 c.r. I had a '83 Bonneville once that ran at 220 and was the way it was designed. After 100,000 miles it ran like garbage and overheated. I dis-connected the computer, put in a 160 and it ran great.
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69 C10 longbed: 357c.i. /TH400/3.73s/AC/ beige primer/saving $ for paint
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