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What plugs are you guys running? Ive always been a Autolite (3924) guy, but my engine builder likes the NGK R5671A-7 it is on the motor..... .035 gap, MSD 6AL

N/A 410 Cubic Inches
TFS highports CnC'd- TEA
Super Vic portmatched
Cam HydRoller - 242/[email protected] .050 629I 621E on a 110 1.72's
QF Q850
10.25:1
1 3/4" hooker super comps
35 deg timing
93 octane pump
 

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Use whichever one you're more comfortable reading. Autolites and ngk plugs read differently. The autolite 3924 is a projected tip plug and the 5671a is a non-projected tip. 5672a-8 is a projected tip ngk plug that is comparable to the 3924.
 

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I run the bkr6e ngk gapped at 45 on my 408w with afr205s and same compression on 93 with a super vic and a little more cam then u but I dont run that much timing, 32* lockde out here
 

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-6 or -7 ngk at .030/.032
 
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