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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: tigwelder on January 23, 2011, 09:44:01 pm

Title: timing on 77 400sb?
Post by: tigwelder on January 23, 2011, 09:44:01 pm

what is the timing set at on a 77 K-20 400 sb auto?

Title: Re: timing on 77 400sb?
Post by: Layne on January 23, 2011, 10:51:48 pm

Off the top of my head I think it's 4 degrees btdc