Re: DZ Spark Plugs?
 

Sam --Rob did performance comparison tests on the dyno and he said he saw the difference with the NGK's performance.I've got an electronic ignition so I can open the gap or file back the ground rod a bit and my unit will fire pretty hot.----- I've got no complains with AC, BUT dynos don't lie, Rob said it performed super. I did however find that the AC 44 or 45 did keep a "STREET TUNE" longer than the NGK IN MY CASE-- also AC 43 is a little too cold if your not gonna blow out the carbon now and again....----------I would guess Rob would be able to give you a number for your Z............ https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: DZ Spark Plugs?
 

Thanks Joe. I am thinking about using some of my NOS AC 44's for the street. (AC's look better) I have been using Autolites with good results. Maybe the NGK's are even better??!! Need to get the right heat range for the NGK. Thanks!

Re: DZ Spark Plugs?
 

Here is what NGK shows for the '69 Z28: CLICK HERE

I'm personally not up on the small block NGK plugs, but our dyno guy should be...

Re: DZ Spark Plugs?
 

Yeah they do look better--guess it's a sentimental thing........ https://www.yenko.net/ubbthreads/imag...mlins/grin.gif

Re: DZ Spark Plugs?
 

Thanks Rob! Sam

Re: DZ Spark Plugs?
 

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Thanks Rob! Sam

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I second that thanks! https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: DZ Spark Plugs?
 

Marlin/ Frank...what jets are you running front and rear ?

Re: DZ Spark Plugs?
 

NGK https://www.yenko.net/ubbthreads/imag...iggthumpup.gif

Re: DZ Spark Plugs?
 

www.rockauto.com/ 3332/XR5 NGK $1.61 each, comes in 4 pack.

Re: DZ Spark Plugs?
 

[ QUOTE ]
www.rockauto.com/ 3332/XR5 NGK $1.61 each, comes in 4 pack.

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never heard of them..John you order from them on a reg basis???