CRG Discussion Forum

Camaro Research Group Discussion => Maintenance => Topic started by: rockphil on June 08, 2009, 08:00:19 PM

Title: Points Gap and Dwell Setting for 302 Engine
Post by: rockphil on June 08, 2009, 08:00:19 PM

Does anybody know the proper points gap and dwell setting for a stock 69 Camaro 302 Engine using the 1111480 distributor?

Title: Re: Points Gap and Dwell Setting for 302 Engine
Post by: 1968RSZ28 on June 08, 2009, 11:16:49 PM

Quote from: rockphil on June 08, 2009, 08:00:19 PM

Does anybody know the proper points gap and dwell setting for a stock 69 Camaro 302 Engine using the 1111480 distributor?

The 1969 Chevrolet Chassis Service Manual states the point dwell setting should be 28-32 degrees (30 degrees preferred) for the 480 distributor.

Paul

Title: Re: Points Gap and Dwell Setting for 302 Engine
Post by: rockphil on June 08, 2009, 11:45:05 PM

Thanks Paul - does the manual state what the gap should be in order to achieve the recommended dwell setting?

Title: Re: Points Gap and Dwell Setting for 302 Engine
Post by: Stingr69 on June 09, 2009, 12:08:59 AM

.019" is the setting. The 30° or .019" is for most all of the single points distributors that I have worked on.

-Mark.

Title: Re: Points Gap and Dwell Setting for 302 Engine
Post by: 1968RSZ28 on June 09, 2009, 01:56:10 AM

Quote from: rockphil on June 08, 2009, 11:45:05 PM

Thanks Paul - does the manual state what the gap should be in order to achieve the recommended dwell setting?

No, there is no specification for the point gap in the '69 Chassis Service Manual for V8 engines.

I do have a 1968 Sun Electric Corporation tune-up chart for the 302 and it states the point gap should be .019" for new points and .016" for used points.

Remember, if you have a dwell meter and can set the dwell at 30 degrees then the point gap is perfect, no matter what the specification is!    :)

Paul   

Title: Re: Points Gap and Dwell Setting for 302 Engine
Post by: rockphil on June 09, 2009, 02:16:27 AM

Thanks Mike and Paul - I'm switching out my distributor to a rebuilt original 480 - just wanted to make sure I get it right...

Title: Re: Points Gap and Dwell Setting for 302 Engine
Post by: glenn64vette on June 09, 2009, 05:56:43 PM

Back in the 60's and 70s we used to set the dwell at 26 degrees to increase rpm before point bounce.

Title: Re: Points Gap and Dwell Setting for 302 Engine
Post by: JohnZ on June 11, 2009, 04:40:01 PM

Set the dwell FIRST, then set the timing; dwell changes affect the timing.

Title: Re: Points Gap and Dwell Setting for 302 Engine
Post by: 1968RSZ28 on June 11, 2009, 07:23:32 PM

Quote from: JohnZ on June 11, 2009, 04:40:01 PM

Set the dwell FIRST, then set the timing; dwell changes affect the timing.

Correct.  As the rubbing block wears against the distributor cam lobes, dwell increases and timing retards.

Paul