Go long tubes. Not many people on this site run shorties for a reason and most people on this site are putting down some impressive numbers. Also like mentioned previously 400rwhp out of a LM7 (5.3l) will require more than $1000 and likely be bottle or force fed. (nitrous or turbo, supercharger)

 

Ok i am brand new on the site i am about to put LONG TUBE headers on my 2002 silverado 1500 put i just do not know what to do after the headers i was thinking about Straight pipes to 10 Series but then i worry about losing power i want the most power out of it plz help

 

Wow lol...

To the OP, First step would be to decide what your over all power goal will be and plan accordingly.
If your goal is 400rwhp than that cam may possibly get you there with proper supporting mods but really isn't the best choice. If your goal is higher you would be wasting money on a cam that would never get you there. The best bang for the buck would be a better cam and tune with a free flowing exhaust.
Post your long term goals so that we can offer you a specific hitlist of items.

Armuguy, Help us help you by starting your own thread

 

by the end i would like to hit 1000HP not to the wheels but 1000 to the motor, plan on getting a twin 76MM turbo to go along with what i have, plus more

 

 

What is this power chip that is listed in your signature? Also ditch the TB spacer and sell it on ebay, put the proceeds to future mods.

 

The ACD Chip he's got listed is 3 resistors in a fancy box that goes between the MAF and MAF Harness. AKA a joke (A bad one too). ACD actually calls the MAF an Air/Fuel Ratio Sensor (my word, I thought that was what Honda called their linear O2S)

Basically, I would HIGHLY recommend that ed01sierra takes NO further advice from whomever is suckering him into wasting his money. You just don't go for dual 76mm when you're using a (pointless) resistor mod that your O2S are negating anyway. Learn more, spend less.



TL;DR--- ed01sierra is gullible

 

Need a good cheap set of heads that will make a big difference?

 

Thats funny **** right there, I don't care who you are... LoL


Seriously tho, listen to everyone else... don't go with shorties. From what i understand shorties offer about as much gain as stock manifolds.

If I had $1,000 to spend, since I'm already custom tuned, have long tubes, & exhaust...

I'd either beef up my tranny for the future or cam & stall at the same time.

 

"Cheap" and "Big Difference" ain't happening. Stick with whatever you've got already, as it's cheap and it makes a big difference when you have them.

You've heard it already- $1000 isn't going to get you terribly far unless you put a decent cam in. Anything else, plan to spend $2-5 grand on to make big differences. Heads really don't matter as much if you're planning on boosting it, exhaust really doesn't matter if your planning on boosting it (why pay money for something you're taking off anyway?). Save your money, do your research and spend it where you need to spend it.

If you're going with boost, save for some forged rods and pistons.