Timing and Spark Plug Gap for 350
October 31st, 2007, 10:23 AM
#1
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Timing and Spark Plug Gap for 350
Hello all,
I recently converted the 350 engine in my '73 Delta 88 to a Pertronix electronic ignition. I need to set the timing and my repair manual says to see a sticker in the engine compartment, but the owner before me had removed all stickers in a repaint effort. Does anyone know what the proper timing setting is for my car? Also, I want to put a new set of spark plugs in, but I don't know what the gap should be set at?
Thank you all in advance,
Chris
I recently converted the 350 engine in my '73 Delta 88 to a Pertronix electronic ignition. I need to set the timing and my repair manual says to see a sticker in the engine compartment, but the owner before me had removed all stickers in a repaint effort. Does anyone know what the proper timing setting is for my car? Also, I want to put a new set of spark plugs in, but I don't know what the gap should be set at?
Thank you all in advance,
Chris
October 31st, 2007, 03:06 PM
#2
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I believe it is 17 or 18 degrees below top dead center @1100
gap for a 307 is.060
I would think they are the same.
I'd go with that on ACDelcos
If you're using Champions id go .040
gap for a 307 is.060
I would think they are the same.
I'd go with that on ACDelcos
If you're using Champions id go .040
Last edited by J-(Chicago); October 31st, 2007 at 03:55 PM.
October 31st, 2007, 06:19 PM
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Oh for sure! In '69 the gap was .030 and the advance was only about 8 btdc. Just shows that the engines will run well with varying settings depending upon the distributor and the junk loaded on top of the manifold for smog regs.
November 1st, 2007, 08:41 AM
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Thank you all for your help! I will try out the plugs gapped at .035 and the timing at 12 degrees BTDC tonight. This is all very new to me, and I am bumping my way around this car. Thanks again.
Chris
Chris
November 1st, 2007, 03:37 PM
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November 1st, 2007, 04:43 PM
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No reason to.
That "junk/crap/etc" has nothing to do with the spark advance/plug gap, or the power output of that engine.
Might be an oversimplification, but, advance requirements are determined by cylinder pressures (compression ratios) and the plug gaps, by fuel mixtures.
Norm
That "junk/crap/etc" has nothing to do with the spark advance/plug gap, or the power output of that engine.
Might be an oversimplification, but, advance requirements are determined by cylinder pressures (compression ratios) and the plug gaps, by fuel mixtures.
Norm
November 3rd, 2007, 08:23 AM
#11
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Nothing to do with the distributor.
Increase in gap was because of the change to lean mixtures that were used to meet emissions standards.
On a pre '74 factory engine, .032" or .045" will work fine. '74 and later will need .045" to run satisfactorily.
Norm
Increase in gap was because of the change to lean mixtures that were used to meet emissions standards.
On a pre '74 factory engine, .032" or .045" will work fine. '74 and later will need .045" to run satisfactorily.
Norm
March 6th, 2009, 11:30 AM
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March 6th, 2009, 06:10 PM
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