Setting timing with a vacuum guage
#1
Setting timing with a vacuum guage
Has anyone had success using a vacuum guage to set their timing on a 65 400 stock engine? If so, what should I be looking for in and any other tips good or bad would be helpful. I have heard pros and cons to this so I'm not sure what the truth is.
#4
If Octane is not an issue what do you think the maximum setting with a timing light might be and if I am looking for maximum HP how would I know when I am there? I have heard the only way to get to maximum HP is to Dyno the engine.
#6
#7
^x2^
More accurate & my preferred method, as well. Nothing wrong with the Harv and/or Glenn method.
The 1965 Oldsmobile CSM should specify/demonstrate the appropriate timing (and method) for tuning the 400 cid engine. Dwell, Timing & A/F mixture. Or, it should be on a label on the fan shroud (if the label is there). If you're after the absolute exact (documented) top HP for the engine then you'll have to use a dyno.
More accurate & my preferred method, as well. Nothing wrong with the Harv and/or Glenn method.
The 1965 Oldsmobile CSM should specify/demonstrate the appropriate timing (and method) for tuning the 400 cid engine. Dwell, Timing & A/F mixture. Or, it should be on a label on the fan shroud (if the label is there). If you're after the absolute exact (documented) top HP for the engine then you'll have to use a dyno.
#9
Engine_Timing.pdf (corvette-restoration.com)
TIMING AND VACUUM ADVANCE 101 (rockridgefarm.com)
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July 5th, 2014 04:12 PM