We evaluated the short comings of the OEM optical trigger and incorporated our own trigger wheel and digital encoder. This trigger process is much more reliable and accurate through high rpm.

LT-1 Distributor PN 83811
Addendum PN 83811
LT-1 Distributor PN 8381

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Pro-Billet™ LT-1 Distributor

Finally, an all-out performance distributor to replace the OEM GM LT-1 Optispark! We machine an entire billet block of aluminum down into a precise housing that fits in place of the factory piece. Then, we fill it with a reliable new pickup assembly, a trick timing adjustment mechanism and top it off with an all new MSD distributor cap!
The pickup is an advanced optical encoder, a different style of optical pickup than the OEM. This style pickup has proven to be very reliable and stable through extreme rpm and conditions. The rotor is bolted to a drive assembly that is indexed to the shaft and is stabilized through the use of a large ball bearing assembly.
Once installed, you have the ability to adjust the ignition timing – the only distributor that offers timing adjustability! An adjustment screw allows the timing to be tweaked up to +/-5°. The distributor is equipped with a fresh air vent and has an extra thick mounting surface for the cap to eliminate leaks.
The distributor is supplied complete with our heavy duty LT-1 Cap, Rotor and the components required for installation.

Pro-Billet LT-1 Distributor
’94-’96 Late Model PN 83811

’92-’94 Early Model, supplied with fresh air hoses PN 8381