Need spark plug advice

[Soldier_GN]

So im doing some up grades...putting on some TA ported heads 212 212 cam rockers lifters...the whole deal....

my current set up is 60-1 turbo running 91 with alky...im looking to go about 22 23 psi on it

Was looking for dome advice about which dpark plug would best work for me...the paper from TA had many choices and nit sure which to use...

This is a street car mostly with ocassional track passes...just looki g for the best performing SP out there....

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[TLIMITED]

If the paper from T/A listed a A/C R42TS or Autolite 23's those should be the best.

 

[Soldier_GN]

Autolights 3924's

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[getdowngranny]

NGK YR5 or equivalent recessed tip plug.


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[turbo nasty]

NGK gets my vote

 

[Nick Micale]

Autolights 3924's...............

I would not run that plug as it has an extended or projected tip, especially with e-85?

The TA heads require a 3/4" reach plug, as some of the other plugs mentioned here are for stock heads and not proper.

Autolite AR 3933 or even a colder AR 3932 is what I use with e-85 in a similar build, and have used them on TA alum heads for years when running with 116 octane as well.

 

[SHADOWII]

ar-3934 w/race ported TA hds,212, 91 & alchy here.

 

[Soldier_GN]

^^^ thts wht the paperwork from TA said to use too...just wanted to pi k some brains and see what others were working with

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[SHADOWII]

Your cylinder pressures, temps,etc, will dictate your final plug choice. As Nick has stated earlier, his choice was a colder plug for better performance.I have lower compression, 7.75~, which will allow me to use higher boost levels.
On my iron heads I use the NGK's.