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2000 Pontiac Grand Prix GTP

K

kappa67

Member
Have a question:
I am driving now with a 3.4 pulley....I have no knock nothing only when I push te pedal to the metal then I have 5-8 or so.
Thats all good.
If I go to a 3,3 pulley will this be the same or will I get KR at normal driving?
 


A 3.3 pulley means more boost and potentially more KR. I would sort out the 5-8 degrees you're seeing first before going smaller.
 
you need headers and a tune. 5-8 degrees of kr is piston chipping area for sure. if its knocking on heavens door with a 3.4 what makes you think a 3.3 would be better? stock 3.8 would be best right now till you get more mods.
 
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