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Ford Racing Catalogue Web

IGNITION, FUEL SYSTEMS AND ELECTRICAL DISTRIBUTOR GEARS DIAMETER PART NUMBER MATERIAL COLOR OUTSIDE INSIDE APPLICATION M-12390-G Cast Iron Green 1.421" 0.531" All 351C/351M/400/429/460 engines. a140 M-12390-H Bronze Bronze with 1.421" 0.531" All 351C/351M/400/429/460 engines. a140 Green Stripe M-12390-L Polymer None 1.249" 0.531" 302 EFI/all 351W all camshafts. MATERIAL SELECTION NOTES: • Cast iron gears are compatible with cast iron camshafts (hydraulic or solid flat tappet type). • Steel gears are compatible with billet steel camshafts (hydraulic roller tappet type). • Bronze gears can be used with either cast iron or billet steel camshafts. They are usually recommended by manufacturers of aftermarket billet steel solid roller tappet camshafts. Since the bronze is softer than cast iron or steel, it will wear at a faster rate. • Polymer gears are compatible with all camshafts. IMPORTANT INSTALLATION NOTE: a140 Distributor gears do not have pre-drilled holes. See instructions on page 223. M-12390-G shown BRONZE DISTRIBUTOR GEAR POLYMER DISTRIBUTOR M-12390-H GEAR FOR 302/351W • Fits 351C/351M/400/429/460 point, Duraspark® and EFI M-12390-L distributors with .531" diameter shaft • Fits 302 EFI, 351W EFI, point and Duraspark® distributors • Recommended for billet steel mechanical roller camshafts with .531" diameter shaft • Bronze is softer than cast iron or steel, it will wear at a faster rate • Compatible with cast iron and billet steel camshafts NOTE: Distributor gears do not have • For “extreme duty” race engines pre-drilled holes. See Distributor • Excellent wear characteristics Gear Instruction Sheet. NOTE: Distributor gears do not have pre-drilled hole. See Distributor Gear Instruction Sheet. 1986-1996 EFI V-8 DISTRIBUTOR CAP AND ROTOR KIT M-12106-B302 • Fits 1986-1996 V8 EEC/TFI distributors • Compatible with Ford Racing ignition wire sets • Aluminum terminals For important information about the proper usage of performance parts, please see page 14. 224 Techline (800) FORD788 See pages 286-292 for important safety, emissions and warranty information.


Ford Racing Catalogue Web
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