That's the same plug I'm running the br6. Last year I ran a 210000 mile motor on a 150 shot. Get with your tuner you will be alright.Originally Posted by 06Sierra2
That's the same plug I'm running the br6. Last year I ran a 210000 mile motor on a 150 shot. Get with your tuner you will be alright.
2000*GMC longtubes nelson tune, built trans,trutrac circle d 278 mm stall 373 posi,100 shot of dope and 228 232 588 595 cam.
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