wikd69 wrote:NGK V-Power Stock Nbr: 5034 - R5674-7.
My blower motor is pretty sensitive to heat retention and these plugs are sweet work well for me. Not sure if they'll provide what you need though. I'm running a set of OEM 990 heads (cast iron) so the heat issue will be different if you're using aluminum heads.
Ls7camaro wrote:I had Autolite race plugs, the have the strap cut back, but I am only running a 454 w/MSD ignition, I was gapping at .050, but someone in a different forum said, I should close it to .030.
Hey Wickd69, I have the GM 990 heads, can you tell me pros / cons of these heads in a different room or email me, I don't want to steal the string.
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