MSD Ignition MSD8517 Pro Billet HEI Distributor Mag Trigger suit Buick 400-455 V8

MSD Pro-Billet distributors share the same CNC machining techniques as the rest of the MSD distributor line. They feature a housing that is machined from high-quality 6061-T6 aluminum for durability and show-quality looks. Their oversized shaft receives a QPQ coating for friction reduction and corrosion resistance, with the added strength of two sealed ball bearings that guide the shaft accurately at well over 10,000 rpm. An extra-long sintered bushing replaces the ball bearing at the bottom of Chevrolet models. TIG-welded on top of the polished steel shaft is MSD's accurate mechanical advance assembly. The weights are supported by nylon pads that allow the advance to operate smoothly throughout the rpm range. For all-out racing, the advance mechanism can also be easily locked out. To accurately trigger the ignition, a high-output magnetic pickup is bolted to the base. This pickup produces a precise trigger signal that will never vary more than one degree at any rpm. A durable gear is installed for performance applications, and an MSD red cap with brass terminals and race rotor is supplied. They're available in standard and small diameter models for applications with limited clearance, and require the use of a separate ignition box such as an MSD 6, 7, 8, or 10 Series ignition.

• CNC machined billet aluminium housing and billet aluminium base
• Easy-to-adjust mechanical advance with supplied springs and stop bushings
• Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
• Polished steel shaft is QPQ coated and guided by a sealed ball bearing
• Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction
• Mechanical advance assembly can be locked out for crank trigger systems
• Advance weight pins are staked and tig welded to the plate
• Nylon pads ensure smooth operation of the advance weights
• Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)
• Must be used with an MSD Ignition Control
• No CARB Exemption Order Number
• Must be used with an MSD 6, 7 8or 10 Series Ignition

Specs:Application: Buick 400, 430, 455ci V8. Quantity: Sold individually.