Need help with finding correct plugs

[jason87]

I just converted my gn to e85. I need help figuring out which spark plugs to run.

 

[jason87]

It's a 3.8 with forged trw pistons, 60lbs injectors and chip to match. Racetronixs 340 pump. Not sure what else you need to know. Stock style heads ported with bigger valves than stock not sure on the valve size. I would to know part numbers that will work the best if possible. Thanks

 

[CGASTON]

It's a 3.8 with forged trw pistons, 60lbs injectors and chip to match. Racetronixs 340 pump. Not sure what else you need to know. Stock style heads ported with bigger valves than stock not sure on the valve size. I would to know part numbers that will work the best if possible. Thanks

Do you have iron heads? I run AR134.... Non-projected tips help reduce hot spots and detonation.

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[jason87]

Yes cast.

 

[CGASTON]

Yes cast.

AR 134 (Autolites)

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[Boost231]

AR132 run as cold as possible

 

[Eric Stage I]

I don't use any different plug for E85. I have had good luck with NGK's (UR5 or UR6 for stock type heads).
Regards,
Eric

 

[Eric Stage I]

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