leanlow

Hello, I am new here and just started working on the performance part of my turck. I have a 99 chevy Z71 5.3, We are going to get the Sts turbo and meth. injector for it along with high flow converters and headers. We are about to pull the engine out to get balanced but here is where it gets funky for us. We are wanting to pull the most power out of it as possable.
My question is that i need help with is
1. What heads will give us the most power
2. What pistons, rockers, lifters.
3. What cam.

I need as much help as possible that anyone can give me, we are building this engine to get as much out of it as we can. Please give sug. on products your rec. or that you have used. Thanks for the help in advanced.
I have attached a pic of the truck we are doing the work on

gonzo 6.2

iTrader: (8)

Big truck big tires,you need cubes,start with atleast a 6.0 and think about making it into a 408

litreddevil

iTrader: (4)

Nice Truck I Would Go Soild Lifter,and Some 317 6.0 Heads Unless U Plan To Go After Market.what R U Looking To Spend. This List Can Get Very Long.
All Bolt Ons With About 8:1 Compression Need More Power Turn Up The Boost And Then Keep Turning Up The Boost.

leanlow

We are wanting to get this big truck to the 12s and we have about 15,000 to do it plus a few. So bring on the list, we are pulling everything out of the engine compartment and building from there. I would like to keep the 5.3.block and maybe bore unless someone knows where i can get a 6.0 block to build off of.

gonzo 6.2

iTrader: (8)

Since you have a decent budget,I suggest you try not to reinvent the wheel and take notes from those here that have had to pay the price for all of us to learn from.I dont know if STS is the way to go and we all know the 4L60 will not take the kind of power you can afford.Learn from this guy would be my suggestion. http://www.neufamily.org/truck.html

02sierraz71_5.3

iTrader: (2)

there are guys that have run deep 12's with the 5.3 and sts. I would upgrade to the bigger turbo, slap on some patriot or dart heads the darts just came out and Im itchin to hear about results the 225 flow 300+ at .550

I hope a built tranny is in the budget

2. stock rockers and lifters, an adjustable set is always nice though

3. just a boost friendly cam not alot of overlap somthing around a 224/228 around .56x lift higher lsa around 116. Which ever heads you get I would just send the specks out and have the cam matched to em.

4. High stall

5. get ready to kill vipers, vettes etc...

02sierraz71_5.3

iTrader: (2)

https://www.performancetrucks.net/fo...d.php?t=346623

talk to this guy

F8L Z71

It's totally doable. Just depends on what the guy wants out of his truck.

I was going to turn up the boost and go for an 11 if the tranny held up that night. The only thing that kept me from it was I got a call from Rick@Synergy and Rick @ STS saying not to blow anything up because we had a magazine article pending and if I blew up the truck then no magazine shoot. So I stopped. I had methanol and C16 race gas in the truck and there was no sign of detonation at all at 14-15psi so I feel I had room to push.

If you look at Parish's times back then we were not really that far off in times. He said so himself. The main difference was that I weighed a few hundred lbs more than he did. Obviously he has the better kit but it just goes to show that the STS kit can work quite well when done right.

You guys seen this 9sec STS Twin-Twin yet?

9.88@137.95 on a 1.41 sixty foot
10 pounds of boost and on 93 octane pump gas and built motor

http://forums.corvetteforum.com/show...19&forum_id=86

Video

Ohh, forgot to add. I was running a 226/220-.591/.554-116 cam at that time.

02sierraz71_5.3

iTrader: (2)

DAMN

Wilde Racing

iTrader: (26)

I think the 6.0 is your best choice, but F8L did good with the 5.3 and 6.0 heads. Good pistons, the stock ones are the weekest link, Rod bolts, stud the heads. and you will need to do something with the trans.