Re: 1966 GMC 305 V6 Service
Sludge not bad for a few decades.
I didn't touch inside pan; just propped it up over night.
Only possible sludge issue I saw was rocker arm shaft which can easily be serviced after removing valve covers.
In the future I will verify rocker arm flow every time I adjust lifters.
In the past only adjusted lifters about once per decade or two.
|