sdiddy

iTrader: (3)

The car cam only put down 365rwhp which is weak IMO. I'm looking to be on the ^ side of 400 na rwhp. Mods are listed in sig. Maybe we can break this down 2 ways...
A) A budget minded way of getting there.
B) Money is not a issue..how do I get there?
I will be throwing it on the bottle SOONER than later, so that's something to keep in mind I suppose, but my 400+rwhp goal is my 1st priority.
I'm thinking heads, UD pulley...

SLOW30th-TA

iTrader: (29)

I had pretty much the same set up as you - LT's, Cats, whisper lid, ls6 intake, with a TR224 cam on a 112 lsa and made around 410 rwhp through my 10 bolt (3.42's) with TR stage 1 heads before I sold the setup. I think some good heads/ cost effective for you would be the Livernois Stage II heads and the UD pulley may help as well.....but the 4.11's are not gonna dyno as high.....but with your suspension parts a hard launch seems safe at the track.

Soul TKR

iTrader: (4)

I have AFR 205's with my 224R cam... it seems to like it a lot...

HWI

iTrader: (2)

Get a bigger cam and an LS6 or Fast intake manifold, you can get over 400hp with that without getting heads.

WSsick

iTrader: (13)

he has a 2002 which means he has an LS6 already.

hows the budget looking for heads? thats a big determining factor

sdiddy

iTrader: (3)

I considered doing this but am concerned with CA smog. I have a guy I use to help me get is smogged now but if he falls through I will need to be able to have it pass smog on its own.

So, I figured heads and pulley would get me really close to 400rwhp without hurting me at smog time (2 yrs from now as I just got it smogged).
Budget for heads would be $1500-2000 max and would love to be able to use them down the road if I ever upgrade to say a 408.

ChevyRyda99LS1

it depends on the dyno too can you try and dyno on a diff dyno, one dyno has me well over 400 on my set up and the other dyno has me right there at 400 get a pully and port your stock heads worked for me.

equandt

iTrader: (2)

LS1tech combo #1

TR224-114
TEA 5.3 stage 1.5 heads
Kooks LT headers
ASP Underdrive pulley

This is about a tried and true combo as there is out there.

Good luck.

HWI

iTrader: (2)

02 had the LS6 intake manifold? This is news to me.

87silverbullet

iTrader: (11)

Yes the 01-02 cars had the ls6.

HTX

iTrader: (1)

wow. dont spend the money on a Fast intake. youll get 20 hp if your lucky. For the same money you could get ls6 stage 1.0 heads from texas-speed and get at least 30 hp. and you dont need a bigger cam if you dont want one. the thing limiting you the most is probably the tune. Smog legal tunes.....

HWI

iTrader: (2)

Should've waited a year.

BIG_MIKE2005

iTrader: (116)

a set of PRC 5.3 heads from TSP would love it. They flow good & bump your comp. I'm running my 224 cam with .581 lift on a 114 with a set of stock cast 5.3 heads worked over by Bo White & milled .018". It has never been tuned or dynoed, but it has suprised alot of people on the roads when tested. I'd say if I had at least a LS6 intake & solid tune it would be close to 400rwhp. The low end torque the 5.3 will give you with the extra comp will also keep your butt-o-meter happy everytime you take off from a stop. I can shred tires thru third no problem even from a roll.

LivernoisMotorsports

iTrader: (1)

Slow30th-TA Thank you for recommending our heads!

sdiddy, I had a 1999 Corvette with our stage 1 heads and 224/228 114 LSA cam, CAI, LS6 intake, LT Headers, Z06 catback, and 4.10 gears and I made 420 RWHP / 390 RWTQ.

400 RWHP would be easy with a set of our stage 2 heads and your existing mods.

These heads can be found here

Let us know if you have any questions. I have these heads on the shelf, ready to ship.

Thank you

Regards,

Rick LeBlanc
Livernois Motorsports

Sales2@Texas-speed

iTrader: (5)

Thanks Mike! We've got a special going right now on the PRC cylinder heads! Check out our website or sponsor's section for complete details. To save a few bucks and still easily hit your HP goals, you could go with the Stage 2.5 5.3L heads. Or for a few extra HP, the Stage 2.5 LS6 heads would take good care of you as well!

The major difference between the two is that the 5.3L head has a smaller chamber so you get a bump in compression without milling the heads like you'd have to with an LS6 to achieve the same compression. They flow within just a few CFM of each with very close to the same size ports.

Let us know if we can help

sdiddy

iTrader: (3)

Would you suggest ordering a UD pulley also? I've been hearing negative things about them. Many people are stating that the 10 hp isn't worth the risk and to just stick with the stock one. How long would it take to get either set of heads from TSP (92345)? Which would be the better route? I'm guessing the 5.3's considering they won't need to be milled? What kind of hp difference are we talking between the two? Thanks!

Sales2@Texas-speed

iTrader: (5)

I like the UD pullies. They're usually worth about 6-8rwhp on the average street/strip car. As long as your belt driven accessories are doing their jobs now, you typically won't have any issues with them after under driving the crank. They do have over-drive alternator pullies available if you'd like though as well!

Lead time currently on the stage 2.5 5.3or LS6 heads is 5-7 business days!

sdiddy

iTrader: (3)

Which would be the better route? I'm guessing the 5.3's considering they won't need to be milled? What kind of hp difference are we talking between the two? Thanks!

Dave 96TA

iTrader: (10)

It's a ~$250 used part, don't sweat it.

BIG_MIKE2005

iTrader: (116)

I'd say with your low lift on that cam (I believe thunder grind is .563 instead of .581) I'd suggest the 5.3's all the way man. You don't have a cam that required good head flow over .600 lift. If you did I would suggest the LS6 heads to let it breath more up top. But for that cam grind you'd probably be happier in the end with the bump in comp & extra torque down low from the 5.3's.

If you had a bigger cam & wanted more peak power the LS6 heads would be a good route. I'd go as far as to say with this cam & the 5.3 heads you would make more power under the curve & have a broader torque band which would come on very early.