Got around to updating my 6bt before putting it back in my 55.2 GMC. Working between our weekly snow storms, I put in new governor springs to upgrade RPM before defueling occurs. Removed and replaced tamperproof screws. Took the AFC apart to slightly increase rack travel, inserted next step fuel plate to match manual transmission HP rating. Replaced valve springs to match the governor RPM increase. Replaced head bolts with studs which requires removing part of the rocker arm pedestal to allow room for nuts. Adjusted valves after all else.

Ed
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Last edited by EdPruss; 02/19/2022 11:58 PM.
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