They were probably 58cc. combustion chambers with somewhere around 160-170cc intake runners.
Jeremy
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86 c-10 383 w/ sportsman II heads comp 286h cam Edlbrock RPM Performer intake Holley 750 th350 w/2400 stall 3.73 gears with powertrax No-Slip posi unit. Just broken in good. Will get a 1/4 time this week.
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