67-69 Firebird TECH Includes 69 TA.

          
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Old 04-17-2020, 11:04 AM
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67400firebird 67400firebird is offline
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Default 67 400 Factory Timing Specification

Anyone know the amount of timing added by the centrifugal weights in the distributor from the factory?

And is it all in by 3k RPM?

My car runs great, I'm double checking everything this spring. I changed over to an MSD distributor last year and am reviewing what I did to compare with the factory.

thanks

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Old 09-04-2020, 02:04 PM
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67400firebird 67400firebird is offline
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Originally Posted by 67400firebird View Post
Anyone know the amount of timing added by the centrifugal weights in the distributor from the factory?

And is it all in by 3k RPM?

My car runs great, I'm double checking everything this spring. I changed over to an MSD distributor last year and am reviewing what I did to compare with the factory.

thanks
I probably should have searched the forums for an answer before posting, turns out it's 26-28 degrees for a 67 400.

Reference:
https://forums.maxperformanceinc.com...11#post6158811

I've got the closed chamber heads, using the red stop bushing for 28 degrees at the distributor, 11 at the crank.

I was running the green stop bushing with 23 mechanical and 17 at the crank. It seems to run better using the factory specification at 1 degree less total than before, just FYSA in case you read this post.

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