1971-72 Master Chassis Bolt Kit, 307/350 Disc Brakes
A 1971–1972 Master Chassis Bolt Kit for a 307 or 350 Small Block with Disc Brakes is a highly thorough, factory-correct hardware collection used during frame-off restorations. It replaces all the critical structural and component fasteners underneath the vehicle, featuring period-accurate head stamps, dimensions, and OEM finishes (like silver zinc and black phosphate).
Because the “307/350 Small Block with Disc Brakes” setup spans several General Motors lines from this era, these kits—primarily manufactured by industry-standard brand AMK Products—vary slightly in piece count and application between the Chevelle (A-body), Monte Carlo (A-body Special), and Nova (X-body)
What These Kits Typically Include
A master chassis kit typically consolidates between 330 and 360 separate fasteners, individually organized into labeled application sub-pouches:
- Front Disc Brakes: Grade 8 single-piston caliper mounting bolts, splash shield screws, brake hose retainers, brackets, and the brake proportioning valve/pressure switch hardware.
- Suspension & Steering: Upper and lower control arm alignment bolts/nuts, control arm bushings, front stabilizer/sway bar brackets and end links (with rubber), shocks, steering gear box-to-frame bolts, rag joint hardware, idler arm, and pitman arm fasteners.
- Drivetrain & Small Block Mounts: 307/350 small-block-specific engine frame mounts, transmission crossmember and insulator bolts, driveshaft U-bolts, and 10-bolt or 12-bolt differential rear cover hardware.
- Chassis & Fuel Plumbing: Fuel tank straps, fuel lines/brake lines frame clips, fuel filler neck cover screws, parking brake control/cables, and the accelerator lever support.
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