Spark plugs for Indy EZ-1 Heads

Posted By: Mopar_Mike

Spark plugs for Indy EZ-1 Heads - 02/03/13 08:40 PM

Just finishing up my build and want to know what you guys are using for spark plugs in your Indy EZ-1 Heads.

My engine is a 505 stroker with 11.5.1 compression.

Thanks!

Posted By: afxcoronet

Re: Spark plugs for Indy EZ-1 Heads - 02/03/13 08:45 PM

I've had luck with the NGK 5671A-8 stock number 4554. Currently running the NGK NGK 5671A-9 stock number 5238 with 13-1 alky motor. Both have worked great for me.

Curtis

Posted By: 1stBxMopar

Re: Spark plugs for Indy EZ-1 Heads - 02/03/13 11:22 PM

Autolite- AR3910

Posted By: CHAPPER

Re: Spark plugs for Indy EZ-1 Heads - 02/04/13 12:45 AM

Quote:

I've had luck with the NGK 5671A-8 stock number 4554. Currently running the NGK NGK 5671A-9 stock number 5238 with 13-1 alky motor. Both have worked great for me.

Curtis

Using the -8 in mine. 493" EZ-1 13.5:1 on gas. Tried the -9 first, but it liked the -8 better.

Posted By: 383man

Re: Spark plugs for Indy EZ-1 Heads - 02/04/13 07:08 AM

I am using Autolite AR-3935's on my 10.6 comp 493. Ron

Posted By: rebel

Re: Spark plugs for Indy EZ-1 Heads - 02/04/13 07:41 AM

AR3934X

Attached picture 7574575-2012-10-1120.42.20.jpg

Posted By: 383man

Re: Spark plugs for Indy EZ-1 Heads - 02/04/13 07:52 AM

Quote:

AR3934X

Never used that plug as the AR-3935 plug us just one short ground strap. Bet they are not to cheap ?? Ron

Posted By: rebel

Re: Spark plugs for Indy EZ-1 Heads - 02/04/13 08:28 AM

Quote:

Quote:

AR3934X

Never used that plug as the AR-3935 plug us just one short ground strap. Bet they are not to cheap ?? Ron

wouldn't know the price Ron. i was part of the test program for these plugs, i have a carton of them. i won't be buying plugs for the next decade.
i was using the std AR39.. series plugs before these & these plugs are awesum.

Posted By: mosweethemi

Re: Spark plugs for Indy EZ-1 Heads - 02/06/13 06:43 AM

Hello I see were you ran the AR3910 in your EZ1 heads did they do ok . I have a 500" 440 with the EZ1 heads can you tell me what heat range this plug is good for ? My engine has around 11-1/2-1 will they work ok? Thanks mosweethemi