Re: R45TX spark plugs
I dont think there is a R45TX he must have thought it was.
http://www.acdelco.com/parts/sparkpl...tification.jsp
That will help you find out what your plug is.
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73
1992 Camaro RS 305 TBI
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