I just bought some spark plugs for my 1985 Chevy Truck and got online
to double check that they were the right ones on AC Delco's website.
They gave me R43TS and the website said that they were correct for a
305 "F"series engine, but I have a 305 "H" series which is supposed to
get R45TS. Will these still work? They seem to be different in the
length they penetrate into the engine. Can anyone help me in the
difference in the engines and/or plugs? Thanks!!
On 27 Aug 2006 13:57:36 -0700, email@example.com wrote:
The only differencebetween them is the heat raqnge of the plugs. 43's
are a bit colder than 45's. If it had 43's in it and they were burning
clean, stick with them but if the were dirty, loaded up or sooty
looking try the 45's
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