Okay so I recently went got a 2007 Silverado 5.3 with 243 heads. And then I went picked up a btr stag 1 turbo cam, btr 660 springs. I have ls9injectors, and gauges. Now i have a full on 3 turbo kit. My 5.3 has 170k on it and I need to dod delete ls7 lifters and treys. But manly I just want to know what Parts should I order for the set up I have. Not looking to make crazy power. but I do wanna run mid to low 12.

Where should I run the fed line? Which brand pushrods should i run? Head gaskets? Head studs? Rockers? Fuel pump?

Also will be picking up a 4l80e. So which rebuilt kit should use? What brand torque converter should I go with. Wanting the trans to hold up will be switched to. Lq9 once it’s done or 5.3 blows. Stock crank, forged rod piston, 243 heads. Wanting the trans to hold 600-700+

 

Run the feed line from the just above the oil filter using a oil supply plate they sell.

Stock head gasket will work fine. ARP if you want quality head studs. Stock rockers, no need to replace those but a trunnion kit is a good idea.

Is the truck flex fuel or not? What fuel are you going to run?

At this point you'd be kinda limited by injector, like 500-550hp with 56lb/hr injectors give or take a little.

Research torque converters, a ton of different options out there.

Just a little extra info for here, you can not run a LQ9 in that truck. It's a GEN 3 engine with a different block and it runs a 24x crank trigger compared to a 58x in your truck. It would cost more money to make an older engine work in the new platform. Also the connecting rods in your current 5.3 will handle 800+ horsepower easy, they are the thicking H-beam rods from the factory.

 

Thank you again for the reply truck is felx fuel but in Louisiana E85 is hard to find so I’ll be running pump gas 93. Stock length btr hardened pushrods should do fine right??

 

Not sure of your exact power goal but I took my 06 oem flex fuel pump to over 530rwhp on 93 at 11psi from a Maggie... just food for thought

 

Hey!!!1

 

Ffdp nailed it