MSD 6BTM Series Multiple Spark Ignition Controller w/ Boost Timing Master Road Race Seat Built-in ignitor for compatibility with

Built-in ignitor for compatibility with Holley EFI and many other aftermarket ECU's

1975-1981 Chevrolet P30

Lit LCD Odometer

two-piece rear seal when installing the old style crankshaft in the newer style blocks

MSD 6BTM Series Multiple Spark Ignition Controller w/ Boost Timing Master Road Race Seat Built-in ignitor for compatibility withThe 6 BTM is ideal for engines with a turbo or supercharger. Not only will the engine benefit from MSD's full power CD sparks, but there is also an adjustable boost timing retard circuit to prevent detonation. When your turbo or blower forces the air fuel mixture into the engine, the cylinder pressure inside the combustion chamber increases. The result is a great increase in power but this can also lead to detonation that can result in severe engine