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Maintenance / Correct spark plugs
« on: February 16, 2018, 12:48:21 AM »
I'm replacing some old spark plugs and I'm not sure which ones to buy. 350sb with '69 3927186 heads. A couple years ago I had a mechanic do some work and he put in Autolite 26 plugs. They show a reach of .46. The auto part store recommended AC Delco R45TS which has a .433 reach.
Everything I read on the internet says the reach for that head is 3/8.
Can someone recommend a plug? Should I pay extra for platinum plugs?
Thanks.
Everything I read on the internet says the reach for that head is 3/8.
Can someone recommend a plug? Should I pay extra for platinum plugs?
Thanks.