99xcss4
frank'n (truburban) K-2500
this is what the 96+ 4.3 and 305 y pipe looks like
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Yea no. I have the other one.this is what the 96+ 4.3 and 305 y pipe looks likeYou must be registered for see images attach
Mine only has the one down stream 02. By the flange and the 2 above by the manifolds.
I have the answer for the missing o2 sensor see this thread I was told it not easy to find https://www.gmt400.com/threads/strange-5-7-vortec-factory-exhaust-system.62813/My truck is strange.
Thanks found it.I have the answer for the missing o2 sensor see this thread I was told it not easy to find https://www.gmt400.com/threads/strange-5-7-vortec-factory-exhaust-system.62813/
I deleted the vortec box to help some. Did increase a littlesome thing to consider is increasing air flow in the intake tract to the freer flowing exhaust you want to do they go hand in hand the throttle body can be ported as well as the maf sensor sadly there is only one true cold air intake made for these engines that actually sucks cold air in is made by volant it is discontinued on their site but you can get on on ebay and a few other places new there are other small things you can do to get little more power torque and maybe increase mileage slightly
If you want too go into detail Id appreciate it. Its getting straight pipes no cats hopefully that helps looking towards egr deleteyeah getting rid of that box helps to make it simple an engine is an air pump the more are you can put in and force out the better
this is a list of every thing that was done to my former friends truck some of it we did some of it was all ready done when he got the truck
replaced 4l60e with a rebouilt/reman one done by a po
install 4l60e servo upgrade we
replace front and rear diff with one from a 6 lug K-2500 we did
upgrade brake system we did
po installed 6 lift and 35x12.50x15s
full front end rebuild we did
front axle actuator upgrade we did
exhaust system we did
upgrade charging system we did
full emissions delete we did
we pulled the 305 out and put in a mild 350
minor tuning on the pcm we did
I can go into detale if you want on the engine build and pcm tuning