SEL777
One of 101
Ok, I will do my best with the limited info I have. Brandon may be able to shed some more light on the topic if needed. We ran check with Tuner Pro on SAT, however we did not save the file for review. The one run we did was from a 10 MPH punch to about 60-65 or so. Knock shows 0 through 1st gear then, jumps to 3 at the 1-2 shift and climbs to around 6. Same on the 2-3 shift, knock shows 3 and climbs to around 6. The truck was last tuned 4/05 with Taylor wires, NGK UR5's, Napa copper cap and rotor, AC Delco fuel filter, and GM PVC valves. The only mods to the truck are a Johnson pump hotwired, I/C scoop, hare line delete and, a Gilbert shaft. We just installed an eletric AM Boost gauge and it looks like I'm right at 15 PSI. I know I have an issue with the front diff bushings and the rear u-joint is in need of a rebuild. Could the suspension be causing this knock? If it is not related to the suspesnion then, any ideas on a place to start would be greatly appreciated. I also have more tuning stuff I need to install: AFPR and a new 255 LPH FP. I will be getting the suspension issuses resolved before the NATS along with new shocks and a rear sway bar.
I read pages of knock related items for tuning help but I did not see anything close to the specific things I am seeing. TIA
I read pages of knock related items for tuning help but I did not see anything close to the specific things I am seeing. TIA
