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If the dot on the crank it at 12 O'clock your at TDC FOR BOTH #1 and #6. Remember that the crank goes two revolutions to complete a cycle, and the cam goes one rev for the cycle. The first revolution is intake/compression (IGNITION) then second revolution is power/Exhaust. If the cam dot is up your on the #1 cylinder ign part of the cycle, if cam dot down you on #6 ign cycle.
BUT, that is only really important on a conventional SBC where the distributor can be installed in various positions, and you want to be on #1 TDC/ignition so that you can get the distributor properly oriented ( Basic timing is pointing the rotor at the #1 spark plug).
Since the opti only goes on one way – as long as the dots match up, your opti will get installed correctly.
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
Last edited by Pampered-Z; 04-26-2012 at 01:53 PM.
Reason: Speelin, grahmer, punkuation
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