The firing order is the same for all H.O. 5.0's, from 1982 through 1995.
1-3-7-2-6-5-4-8.
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'90 Black Notch: TFS TW heads, Stage 1 Cam, Street Intake, FMS 1.6 rockers, Kirban AFPR, 24# injectors, C&L 76mm MAF, 70mm Accufab TB/EGR, Tremec 3550, SPEC Stage 2 & Billet Flywheel, Alum DS, 4.10's w/ 31 Spline Eaton, Full MAC exhaust, etc.
286.7 RWHP @ 5100rpm, 313.7 TQ w/stock MAF, Inj, TB, and no tune
Race weight : 3090 # w/ driver
New Best - 12.82@107.9 w/1.74 60'
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