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OK - SIMPLE QUESTION ABOUT WHICH AUTOLITE SPARK PLUG?

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Post  Wayne Pearce October 20th 2020, 11:45 am

Hey, guys. Street driven 460, CJ hydraulic cam, approx. comp. ratio 10.5 to 1, A429 aluminum CJ heads. What Autolite spark plug would you recommend?

Wayne (SAWDOFF) Pearce

Wayne Pearce

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Post  gt350hr October 20th 2020, 12:20 pm

I'm using 3924 plugs. The aluminum head runs better with a one step hotter plug than an iron head all things being equal. I have a 10.5-1 521 with A 429 heads and aggressive hyd roller. Street driven dual fours on a Blue Thunder dual four intake.

gt350hr

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Post  rmcomprandy October 20th 2020, 4:54 pm

gt350hr wrote:I'm using 3924 plugs. The aluminum head runs better with a one step hotter plug than an iron head all things being equal. I have a 10.5-1 521 with A 429 heads and aggressive hyd roller. Street driven dual fours on a Blue Thunder dual four intake.

YES ... 3924.

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Post  Wayne Pearce October 20th 2020, 6:29 pm

Thanks a lot, guys - got em ordered.

Wayne

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Post  Wayne Pearce October 20th 2020, 6:30 pm

Thanks guys, got em ordered.

Wayne

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