Author Topic: Timing  (Read 824 times)

Offline BadJoey

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Timing
« on: June 22, 2013 - 07:56:18 PM »
My car has a 440 out of a 67 GTX , heads are out of a early 70's police car  . It is 30 over, small cam, small intake , carb is a 780 . After checking the timing it was 7 or 8 BTDC . My chilton shows 3 440 timings 2 of them were 2.5 BTDC and 1 was 5 BTDC . Car also has Mopar electronic ignition . I put it in and set the timing years ago . Did I set it at 7.5 because the electronic ignit or should it be 5 or 2.5 .  Anyone have any input on this .  Car is now set at 2.5 , starts right and sounds more responsive .Thanks for reading this and any help .




Offline Chryco Psycho

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Re: Timing
« Reply #1 on: June 22, 2013 - 11:31:11 PM »
Generally they respond better with 12-16* at idle & no vacuum advance , are you sure the timing marks are accurate ?

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Offline BadJoey

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Re: Timing
« Reply #2 on: June 23, 2013 - 02:22:34 PM »
The plate on the timing chain cover only goes to 10 in each direction .  Maybe a better question would have been .  Is the timing the same for electronic ignition as it is for points ?

Offline Chryco Psycho

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Re: Timing
« Reply #3 on: June 24, 2013 - 01:11:12 AM »
Yes it is
 if you measure 2 3/8" clockwise from the TDC line that is 36* cut or mark a second line there & you can use the scale on the cover

Challenger - You`ll wish You Hadn`t