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68gmcdude · 05-24-2021, 10:34 AM

I did set the points gap to .019. Just curious, why set initial timing at 10 degrees? I thought timing on these 250's was 0. Also, I forgot to mention that my 250 has the factory California smog pump. The truck is all original so I'm keeping it on.

05-24-2021, 10:34 AM	#8
68gmcdude Registered User Join Date: Jun 2017 Location: Mentor, OH Posts: 126	Re: GMC 250 Inline 6 Tuneup I did set the points gap to .019. Just curious, why set initial timing at 10 degrees? I thought timing on these 250's was 0. Also, I forgot to mention that my 250 has the factory California smog pump. The truck is all original so I'm keeping it on.