Professional Products Powerforce+Plus Harmonic Damper Small Block Chevy 383/400
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Powerforce+Plus SFI Dampers
Small block Chevy engines have used three different timing pointer locations. Pre-1969 engines have the TDC mark 2° to the left of the keyway centerline. 1969-85 dampers have the TDC mark 10° to the left of the keyway centerline. 1986-92 dampers have the TDC mark 40° to the left of the keyway centerline. Professional Products' small block Chevy dampers use the 10° TDC position. 6.75" models have two TDC marks; one that is 10° and another that is 40° to the left of the keyway. If you have a pre-1969 vehicle, you can use one of the aftermarket bolt-on timing pointers for correct timing mark alignment.
Specifications:
Do I need the counter weight for 1299 or I'm I okay with buying just the balancer
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