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Discussion Starter · #1 ·
trying to find out the correct parts needed for my 1985 - 305 v8 ? prefer ac delco but like recommendations. are the correct plugs r43 or r45 ? suggestions for wires,cap and rotor. on a budget and its my daily driver. thankyou for any suggestions !!! have a great summer !
 

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the higher the number the hotter the plug burns. I run ac delco they work fine for my needs as far as a stock motor daily driver
 

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I run autolites just like woody, always seemed to get the best performance out of my Chevys with autolite platinums
 

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AC R25TS is the stock plug. The R43s are for the high compression engines like the 302, some 327s, 350-350HP, etc. They had 10.5:1, 11.0:1, and 11.5:1 compression ratios. If yours is stock, it probably has 8.5:1 or 9:1 CR.

Jack
 
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