what plugs to use
01-28-2007, 07:30 PM
#1
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Engine: 350
Transmission: th350
what plugs to use
what plugs do you guys run with your tpi motors.. ive always used ngks for my 350s but never had a fuel injected one till now... what do you guys recommend.,
01-28-2007, 07:57 PM
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Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
i run the only plug thats right for a GM motor, A/C Delco.
01-29-2007, 12:52 PM
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Of course everybody is entitled to have their opinions and that's what you will get in a topic like this. I ran NGKs UR4 (U grove) and worked super on the stock engine. I run NGK on all my cars with great results. Now with AFR heads I am also running NGKs. AC are good too. Try both and run what you feel are better 
01-29-2007, 07:14 PM
#5
Any good quality resistor plug with the correct heat range and gap location. That leaves out Autolite, Bosch, Split-Fire, and Denso.
AC R43TS (or R45TS, Hotter), AC 41-817 (platinum), Champion RV15YC4 (or RV15YC6 for hotter heat range), Champion 3018, or NGK 2869 should all work just fine.
AC R43TS (or R45TS, Hotter), AC 41-817 (platinum), Champion RV15YC4 (or RV15YC6 for hotter heat range), Champion 3018, or NGK 2869 should all work just fine.
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