Forum: Performance Modifications

Just finished this tank for a shop that's installing it in a 90% drag and 10% street car. Its 25 gallons with a -12 feed and three -8 returns.

I am getting ready to put my engine in, its a 5.3. i have reworked the heads, new cam cam bearings, rods and lifters, almost ready to put it all back...

Anyone one here build custom fuel cells? I need one for my 03 sierra and would like to have it mounted in the spare tire location. Can someone point...

as some of you know a blew the 5.3 and bought an LY6 6.0, well, today as i was cleaning the engine and checking the block/ rotating , i found that...

Does anyone run dynatech race mufflers? if so how do they perform and would you recommend running them? I went to commerce last weekend and a 70...

thinking about finally getting around to working on the truck. Haven't had the time or money lately, but looking to update my exhaust. right now...

Hi my name is Jake i live in Denver,CO and have a 2005 Yukon 4wd with the 5.3 in it. Ive already did a flow pro muffler, Volant CAI, and a custom PCM...

Finally paidoff my truck. Yaay! Now the fun begins....working with vengeance racing on a heads/cam/tune/stall package. Trick flow 220cc heads, vrx3...

I have an xer273hr14 and my Justin is can I run 7.375 pushrods wit 581/592 lift?

Ok, I'm getting ready to purchase a set of LT's from Calspeed, my question is should I run the 1 7/8" primaries or the 1 3/4" for my setup. My...

So I picked up a complete lq4 and I'm swapping the pistons and rods with the flat tops from a lq9 and will be running some l92 heads should I mill...

Just ordered some 4.56 front and rear for the truck, I have the rear and the rear install kit but the fronts were not in stock. Both are motive brand...

I'm going to use a nnbs intake with 42 lbs green top injectors from a lighting Wuts fuel rails should I use. Cus I tried using the my stock ones from...

I was looking for piston rings sizes are 1.2mmx1.5mmx2.5mm 4.00"/101.6mm bore this is for LY6/LS2/L76 so agine are DNJ rings good they are at...

I'm looking to buy a set of Longtube Headers for my 09 GMC 5.3L before I install a cam in a couple months. I'm thinking about going with the LPP...

Was talking to my dad today about getting his old car back on the street for him. 1972 Dodge Dart Anyways he was talking about what he had done...

Where can I buy a 160* thermostat for my 06' silverado? I tried buying one from summit but the damn thing doesn't fit. Suggestions?

Will the ls3 heads go onto an lq4 without needing the pistons cut? Iv seen the pistons with heads and they are fly cut from the factory. Any insite?

So I am thinking about going twin turbo, but just wondering how I should run my boost gauges. You guys that have twin turbos, how do you run each...

so ive been doing some research on cams for my 6.0l but it got me thinking what is the biggest cam you can run in these motors with out having to fly...