73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: tigwelder on November 11, 2013, 07:10:33 am
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tuning my 85 K20 . what are the best spark plugs to use ? it has a 350 with auto. came with factory dual exhaust and stainless exhaust manifolds . was told when I got it that it had 2 air pumps when new but are long gone. i have been driving truck for 3 years runs good .time for tune up before the snow hits.
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AC delco here... 6- 44ts and (2- 45ts in the valve leak cylinders). Couldn't get any better. :-)
What's under the hood??? If you have to ask maybe we shouldn't race...