MSD SBC/BBC Pro-Billet Small Diameter Distributor - Iron Melonized Gear (Requires MSD Ignition Control)

Features:
Advance weight pins are staked and tig welded to the plate
Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
Special oil tract improves lubrication to the distributor and cam gear
Will not accept a vacuum advance canister
Polished steel shaft is QPQ coated and guided by a sealed ball bearing and extra long sintered bushing
O-ring seals can be added to modified blocks to improve oil pressure control• Must be used with an MSD 6, 7, 8, or 10 Series Ignition
No CARB Exemption Order Number
CNC machined billet aluminum housing is 3/8” smaller in diameter and 7/8” shorter than conventional Chevy V-8 distributors with the “points” type cap
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
Adjustable slip collar mounting flange for engines with modified deck heights
Easy-to-adjust mechanical advance with supplied springs and stop bushings
Supplied with small diameter HEI style distributor cap and rotor (will accept 8441 Cap-A-Dapt)
Nylon pads ensure smooth operation of the advance weights

Specs:
Part Number: MSD-8570
Distributor Cap Included: Yes
Distributor Cap Style: Male/HEI
Distributor Cap Type: Small Cap
Ignition Coil Included: No
Ignition Module Included: No
Computer-Controlled Compatible: No
Trigger Style: Magnetic
Advance Type: Mechancial
Ignition Box Required: Yes
Mechanical Tach Drive: No
Slip Collar: Yes
Distributor Gear Material: Iron
Distributor Gear Rotation: Standard
Distributor Cap Color: Red
Housing Material: Aluminum
Housing Finish: Natural
Marine Use: No
Notes: mall base diameter for clearing tunnel rams, blowers, and tight clearance firewalls.