Re: Building a 350 Vortec motor
Will do... I believe that was the plan Sunday anyway. My family will be on board and i'm sure my wife, 4yr old, and 20 month old don't really want me testing out WOT with them in it anyways....
As for timing adjustments, we're going out with a mechanic friend of mine and his family. He recommended setting my timing while underway to make sure everything is right at higher throttle points. Does this sound correct?
Nope sounds like a old way of timig a vacum advance system...It worked well for that system...The T5 is all electronic no fly by the seat of the pants..
http://www.boatfix.com/merc/Servmanl/16/16B4R2.PDF
Thunderbolt IV Ignition
Timing
1. Connect timing light (91-99379 or similar) to No.
1 spark plug. Connect power supply leads on
light to 12 volt battery. Refer to ?Specifications?
for cylinder numbering and location.
2. Connect tachometer to engine.
3. Start engine and run at normal idle speed.
4. Aim timing light at timing tab, located on timing
gear cover and crankshaft torsional damper.
IMPORTANT: GM engine timing marks (on tab)
are in 2-degree increments. MCM and MIE LH engines
will have ?A? (Advance) mark to the left of
?0.? Timing must be set on the ?A? side of ?0?
(Top Dead Center).
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b
a
a - Degree Marks
b - Timing Mark
5. Adjust timing by loosening distributor clamp and
rotating distributor body as required until timing
mark on damper or pulley lines up with the mark
on tab specified in ?Specifications.? Tighten
clamp and recheck location of timing mark.
6. Stop engine and remove timing light.
