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MSD

MSD 83603 Distributor

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Key item features

Effortless Installation: Features a simple three-wire connection for quick setup and includes an HEI-style distributor cap and rotor.
Integrated Performance: Equipped with a powerful built-in module delivering a 7.5 amp single spark through high RPMs and a new integrated rev limiter.
Durable Construction: CNC machined billet aluminum housing and base, with a QPQ coated polished steel shaft guided by a sealed ball bearing.
Precision Timing: Offers an easy-to-adjust mechanical advance with supplied springs and stop bushings, plus a vacuum advance canister for improved economy.
Optimized Lubrication: Incorporates O-ring seals for improved oil pressure control in modified blocks and a special oil tract for enhanced distributor and cam gear lubrication.
Stable Triggering: Utilizes a maintenance-free magnetic pickup and precision reluctor to generate stable trigger signals across the entire RPM range.

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Specs

Vehicle model
83603
Vehicle make
MSD Ignition
Vehicle fitment type
Specific
Automotive parts division
Performance
Brand
MSD
Automotive specialty part type
Distributor

Current price is $562.95

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Comparison Overview:
Product	Viewing this item MSD 83603 Distributor current price $562.95 MSD 83603 Distributor	MSD 8386 Distributor current price Now $539.99, Was $716.95 MSD 8386 Distributor 4 out of 5 Stars. 1 reviews	MSD Ignitions 8570 Pro-Billet Small Diameter Distributor current price $511.95 MSD Ignitions 8570 Pro-Billet Small Diameter Distributor	MSD 84791 Distributor current price $562.95 MSD 84791 Distributor 5 out of 5 Stars. 3 reviews	MSD 8578 Distributor current price $549.95 MSD 8578 Distributor 5 out of 5 Stars. 2 reviews	MSD 8528 Distributor current price Now $603.01, Was $635.95 MSD 8528 Distributor 1 out of 5 Stars. 1 reviews	MSD 8552 Distributor current price $716.95 MSD 8552 Distributor 5 out of 5 Stars. 1 reviews	MSD 8560 Distributor current price $562.95 MSD 8560 Distributor	MSD 23843 Distributor current price $562.95 MSD 23843 Distributor	MSD 85787 Distributor, Ford 351W/Steel Gear/Holley Hi-Ram current price $562.95 MSD 85787 Distributor, Ford 351W/Steel Gear/Holley Hi-Ram

Comparison Chart:
Vehicle model	83603MSD 83603 Distributor	8386MSD 8386 Distributor	8570MSD Ignitions 8570 Pro-Billet Small Diameter Distributor	289MSD 84791 Distributor	351WMSD 8578 Distributor	-MSD 8528 Distributor	ElectraMSD 8552 Distributor	8560MSD 8560 Distributor	23843MSD 23843 Distributor	85787MSD 85787 Distributor, Ford 351W/Steel Gear/Holley Hi-Ram
Vehicle make	MSD IgnitionMSD 83603 Distributor	ChryslerMSD 8386 Distributor	-MSD Ignitions 8570 Pro-Billet Small Diameter Distributor	FordMSD 84791 Distributor	FordMSD 8578 Distributor	-MSD 8528 Distributor	BuickMSD 8552 Distributor	ChevyMSD 8560 Distributor	PontiacMSD 23843 Distributor	FordMSD 85787 Distributor, Ford 351W/Steel Gear/Holley Hi-Ram
Vehicle fitment type	SpecificMSD 83603 Distributor	SpecificMSD 8386 Distributor	SpecificMSD Ignitions 8570 Pro-Billet Small Diameter Distributor	SpecificMSD 84791 Distributor	SpecificMSD 8578 Distributor	SpecificMSD 8528 Distributor	SpecificMSD 8552 Distributor	SpecificMSD 8560 Distributor	SpecificMSD 23843 Distributor	SpecificMSD 85787 Distributor, Ford 351W/Steel Gear/Holley Hi-Ram
Automotive parts division	PerformanceMSD 83603 Distributor	PerformanceMSD 8386 Distributor	PerformanceMSD Ignitions 8570 Pro-Billet Small Diameter Distributor	PerformanceMSD 84791 Distributor	PerformanceMSD 8578 Distributor	PerformanceMSD 8528 Distributor	PerformanceMSD 8552 Distributor	PerformanceMSD 8560 Distributor	PerformanceMSD 23843 Distributor	PerformanceMSD 85787 Distributor, Ford 351W/Steel Gear/Holley Hi-Ram

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About this item

Product details

Compatible with Small and Big Block Chevrolet® V8. This product is not created or sold by Chevrolet®. Black Ready-to-run distributors include a built-in ignition module-no MSD Ignition control required.;

This Black Pro-Billet Ready-to-Run distributor is the perfect upgrade for outdated points distributors or bulky HEIs. Simply install the distributor in the engine, connect three wires, the coil and fire it up!

A maintenance-free magnetic pick-up accurately reluctors the module. The increased output of the amplifier easily outperforms stock ignitions and will smooth out the engine's idle, improve starting and provide a much higher rpm range.

The Ready-to-Run features MSD's adjustable mechanical advance which allows you to custom tailor an ignition curve to match your engine's needs. There is also a vacuum advance canister to help improve economy. For positive street performance, the Ready-to-Run is the best choice.

Includes a separate tach circuit that is ideal to reluctor an aftermarket EFI such as an Atomic EFI system.;

Simple and clean installation with only three wires to connect
Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)
Does not require an MSD Ignition Control
CARB E.O. Approved
Now includes build-in rev limiter!
O-ring seals can be added to modified blocks to improve oil pressure control
Special oil tract improves lubrication to the distributor and cam gear
Nylon pads ensure smooth operation of the advance weights
Â Powerful built-in module produces a 7.5 amp single spark through high rpm
Easy-to-adjust mechanical advance with supplied springs and stop bushings
Vacuum advance canister for improved economy (can be locked out)
CNC machined billet aluminum housing and billet aluminum base
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

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Specifications

Vehicle model

83603

Vehicle make

MSD Ignition

Vehicle fitment type

Specific

Automotive parts division

Performance

Warranty

Warranty information

90 Days

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