Forum: Performance Modifications

So with a mild cam, tune, 3K converter, and high flow cats will my truck pass a sniffer test? Any cams to look for that will pass and what to tell...

Anyone ever used this turbo from turbonetics Gonna be using for street/track use but really just To make a bunch of noise... Any thoughts on it?

Long story short I bought an ls3 tb without researching and thinking they were all the same. Some people have gotten lucky and had 0 issues. I'm not...

is there any possible way that a cam (cam shaft) can be bent?

What's up guys! I'm brand new here and I've spent all day reading! I want to do a cam swap on my 4.8l crew cab! But I'm in California where if you...

Been primarily a F..d guy most of my car driving life but don't nail me to the wall yet. :) Owned many mustangs along the way with my most current...

I've hot an lq4/4l80e. 222/226 597/598 113 with a stock verter. Its a dog down low till about 3k. I have aset of 243s i want to put on. Should I...

Just comparing prices for 3" stainless exhaust piping. It seems its better off to buy a builder kit than individual pieces most places I've looked....

would i be able to run this cam with a stock bottom end ? Top end is so far 706 heads Ls6 springs Ls7 Lifters it says 10.5:1 CR i believe the 03...

So I bought some used 243 heads with 27k miles on them with the yellow springs that came off a Vette. The heads look damn good, my ? is how do I tell...

I am considering a CAI for my 2013 Sikverado Z71 w/5.3 liter engine. Are these worth it or are they just something flashy under the hood to make a...

I just swapped a 5.3l into a 98gmc. I installed an aeromotive 340 stealth pump, a-1000 pressure regulator, and 60lb/hr injectors. I prime the system...

i got a 99 6.0 with iron heads cheap to start my build, i have a set of 317s available. is the swap worth the gains or should i just save the money...

As you can see my fuel cross over line is sticking out to far and the alternator is hitting it. Am I just missing something or do I gotta get a damn...

I am currently in need of a new muffler on my truck, and I am in debate as to what to get. I was looking at a Flowmaster Super 40 Deltaflow priced...

I plan on taking the exhaust off my blazer in favor of straight headers. How long of an exhaust pipe do I need to have after the collectors so that...

01 reg cab short bed, stock ls1, 3k stall with 373 gears. Has headers with off road y pipe magnaflow muffler. Truck intake with 42lb injectors....

bought a new set of 50# injectors from a member on here from a 12' camaro. he said they would work and they look like they will. im in the middle...

Hey guys I'm running into a little problem I install a supercharger on my 2000 gmc sierra regular cab 5.3 engine and the street tires that I have...