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Plug gap autolites #991974 05/14/11 12:16 AM 05/14/11 12:16 AM
Joined: Oct 2003 Posts: 111 Eldridge, IA H HR5058 OP member
HR5058 OP member H Joined: Oct 2003 Posts: 111 Eldridge, IA	Got my Autolite plugs. One set of 3910 and one set of 3911. Autolite tech guy said that they are pre gapped at 25 and to leave it there. Seems awful tight. What do you all think? 418 CU SB Aluminum heads 12.7-1 compression 112 race fuel Thanks Chuck

Re: Plug gap autolites [Re: HR5058] #991975 05/14/11 12:35 AM 05/14/11 12:35 AM
Joined: Nov 2003 Posts: 6,293 Rock Springs Bob_Coomer master
Bob_Coomer master Joined: Nov 2003 Posts: 6,293 Rock Springs	between .030-.040 is close enough for me.. [color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]

Re: Plug gap autolites [Re: HR5058] #991976 05/14/11 01:13 AM 05/14/11 01:13 AM
Joined: Aug 2003 Posts: 43,123 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,123 Bend,OR USA	Quote: Got my Autolite plugs. One set of 3910 and one set of 3911.� Autolite tech guy said that they are pre gapped at 25 and to leave it there.� Seems awful tight.� What do you all think?418 CU SBAluminum heads12.7-1 compression112 race fuelThanksChuck All of the 3911 and 3910 I have bought and used had .035 from the factory, I gap mine at .045 for pump gas and using a MSD 7 ignition with the proper coil for the race boxes Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Plug gap autolites [Re: Cab_Burge] #991977 05/14/11 02:21 AM 05/14/11 02:21 AM
Joined: Dec 2006 Posts: 3,667 Arizona C Chris'sBarracuda master
Chris'sBarracuda master C Joined: Dec 2006 Posts: 3,667 Arizona	Whatever Autolite says is probably the correct answer. I'm quite sure they have much much more test equipment and dyno time than all of us put together. A really smart Pro Stock engine builder told me that some time ago. I think my NGK's are .028 out of the box. R5671's.. Chris..

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