1971-1972 Master Chassis Bolt Kit, 307/350 Drum Brakes
1971-1972 Master Chassis Bolt Kit, 307/350 Drum Brakes ; 1971–1972 Master Chassis Bolt Kits for Small Block (307/350) engines with Front Drum Brakes are highly specialized undercarriage fastener packages designed for concours-level restorations and frame-off builds.
Manufactured primarily by AMK Products to meet strict factory standards, these kits supply roughly 85% of all original chassis fasteners. They utilize factory-accurate head markings, original dimensions, correct thread pitches, and original chemical finishes (such as black phosphate, silver zinc, or cadmium plating) to satisfy strict judging guidelines. Purchasing a pre-packaged master kit saves builders at least 20% compared to buying individual hardware sub-kits.
What the 337 to 346-Piece Kit Includes
The underlying fasteners arrive divided into individually sealed, clearly labeled sub-bags categorized by functional mechanical zones. Depending on the precise manufacturer layout, a standard small-block drum kit averages between 337 to 346 total pieces covering.
- Front Drum Brake & Master Cylinder Hardware: Brake booster flange nuts, front brake plate assemblies, brake line brackets, brake hose retainers, front wheel cylinder mounting bolts, master cylinder mounting hardware, and pushrod bolts.
- Suspension & Steering Systems: Pointed bolts and locknuts for the upper and lower front control arms, rear control arm bolts, sway bar insulator brackets, end links (including rubber bushings), idler arm, pitman arm, steering gear/box-to-frame heavy bolts, and front/rear shock mounts.
- Drivetrain & Small Block Details: Factory-spec 307/350 small block engine-to-frame thru-bolts, frame-side engine mount bracket hardware, transmission crossmember and insulator bolts, differential cover bolts (10-bolt specific), axle retainer plates, and rear driveshaft U-joint hardware.
- Fuel System & Underbody Assemblies: Gas tank mounting strap hardware, fuel vapor line clips, fuel filler neck cover screws, parking brake assembly cables/controls, and accelerator linkage supports.
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