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06-19-2016, 02:28 PM | #1 |
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Join Date: Jan 2015
Location: Lancashire, UK
Posts: 299
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270 GMC engine valve lash adjustment
Would you adjust the valve lash on the 270 GMC when hot or cold? I've found 2 guides one suggested adjusting when hot and one suggesting adjusting when cold. Both guides say Exhaust valves at 20 thou and inlets at 12 thou.
Which way do you do yours?
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my rides 59 GMC Apache fleetside http://67-72chevytrucks.com/vboard/s...d.php?t=684337 68 VW Westy camper |
06-19-2016, 02:54 PM | #2 |
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Join Date: Jun 2006
Location: Idaho
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Re: 270 GMC engine valve lash adjustment
My memory is running temperature. I have the original tool my grandfather and dad used for adjusting GM six valves, a combo wrench / screwdriver affair. An old valve cover with the top cut off helps keep the oil at bay too.
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1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project |
06-27-2016, 02:17 PM | #3 |
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Join Date: Jan 2015
Location: Lancashire, UK
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Re: 270 GMC engine valve lash adjustment
thanks fella, sorted now , runs sweet
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my rides 59 GMC Apache fleetside http://67-72chevytrucks.com/vboard/s...d.php?t=684337 68 VW Westy camper |
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