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gr99gt · 07-05-2001, 01:45 PM

I need to get a new set of plugs for my 89GT. I am planning on going with Autolites but I am not sure which ones to get and what gap to use. I believe the AP25's gapped at .054 are what I was using when my stang was stock but I would like to know if I should change plugs or gaps with my new mods. Thanks

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Chrome Yellow 99GT -Flowmaster DF 40 series mufflers, Steeda tri-ax shifter, Steeda sport springs, Tokico HP shocks/struts, K&N w/ cut silencer
Black 89GT -Cobra intake, E-303 cam, 1.7 roller rockers, rebuilt/balanced short block, 75mm Pro-m, 65mm TB, BBK headers, BBK h-pipe, Flowmaster Am.Thunder, TrickFlow valve springs, K&N, 190 pump, adj fuel press regulator, hurst shifter on T5, MT 26x8.5x15 ET Drags, 3.73 or 4.10?

07-05-2001, 01:45 PM	#1
gr99gt Registered Member Join Date: Jan 2001 Location: Austin, TX, USA Posts: 16	which spark plugs?? I need to get a new set of plugs for my 89GT. I am planning on going with Autolites but I am not sure which ones to get and what gap to use. I believe the AP25's gapped at .054 are what I was using when my stang was stock but I would like to know if I should change plugs or gaps with my new mods. Thanks ------------------ Chrome Yellow 99GT -Flowmaster DF 40 series mufflers, Steeda tri-ax shifter, Steeda sport springs, Tokico HP shocks/struts, K&N w/ cut silencer Black 89GT -Cobra intake, E-303 cam, 1.7 roller rockers, rebuilt/balanced short block, 75mm Pro-m, 65mm TB, BBK headers, BBK h-pipe, Flowmaster Am.Thunder, TrickFlow valve springs, K&N, 190 pump, adj fuel press regulator, hurst shifter on T5, MT 26x8.5x15 ET Drags, 3.73 or 4.10?