GM HEI Distributor Vacuum Advance Block-Off Plate - Clockwise Rotation SALE-ELIGIBLE OEM alternators will work but

OEM alternators will work but some aftermarket alterantors are too deep and will contact cylinder head

Bolt And Washer Included: No

Secure Crankshaft Damper Retention

Plug Clock Rear View Main Mounting Ear at 6 O Clock: 2 o'clock

• Verify your existing pump uses the banjo-style reservoir before ordering

GM HEI Distributor Vacuum Advance Block-Off Plate - Clockwise Rotation SALE-ELIGIBLE OEM alternators will work butLock out the vacuum advance on your GM HEI distributor with this direct bolt on block off plate from Top Street Performance. Designed for standard clockwise rotation TSP and GM HEI distributors, this plate installs in place of the vacuum advance canister, eliminating unwanted timing variation for racing and performance applications where fixed timing is required. No welding, drilling, or modification needed it bolts directly into place for a clean,