rikhek

iTrader: (1)

The dyno graph after tuning the LS1 in my 2001 Corvette with the following mods is provided below. Results were 414 hp and 384 ft.-lbs.

TSP Stage 2.5 5.3L heads;
TSP 228R cam (228/228 .588/.588 on 112 LSA);
TPIS longtube headers, X-pipe & Random Tech high flow cats;
K&N FIPK;
Powerbond 25% underdrive pulley

Comments are welcomed.

Rick

allngn_c5

iTrader: (3)

I like how your torque curve holds above 350 rwtq all the way to your limiter. Nice mild combo, and your valve springs will thank you for not going over .600 lift. Please post some video and/or track stuff. I'd love to see that combo kick some ***.

rikhek

iTrader: (1)

Thanks for the comments. It's a relatively mild package and tune. Car sees a lot of open track usage (i.e., road racing). Lots of sustained high RPM runs (i.e., 30 minute sessions). I do no drag racing hence my setup.

You picked up on a key criteria I had. Namely, keeping the lift below .600 for the valve train & spring longevity. Also went with the 5.3l heads based upon my usage. Shorter runners for low end power out of the turns.

Rick

99zman

iTrader: (23)

wheres the low end Tq? should be at least at 350 at 3000 or 3500? nice hp though.

allngn_c5

iTrader: (3)

Glad to see a combo put together for a specific purpose. Mine was for topend. I see you went for auto X'ing and the choices make it clear. Good result for your purpose.

rikhek

iTrader: (1)

NO autocrossing!!! BAD, BAD, BAD!!!! I run road courses for 30 minute sessions or about 30 - 35 miles per session. Autocrossing is maybe a 1 mile run a handful of times a day during an event. In other words very limited total seat time.

For example, Friday I ran seven sessions for a total of 218 track miles at Hallett Motor Racing. Apples and oranges comparison with autocrossing.

www.hallettracing.net

Rick

P.S. Just having fun. Autocrossing isn't all that bad, if you're a girl......

allngn_c5

iTrader: (3)

Whoa, take it easy bro, I guess I misread. Road courses like World GT racing. Ok I got it. I too would prefer that type of racing. Like you said, seat time.

venom ws7

iTrader: (13)

Nice numbers with CATS and very mid H/C Setup.

Stock TB???

Why didnt you take it pass 6000rpm it seems the car still holding the power???

Oh Congrats man,

allngn_c5

iTrader: (3)

They did take it to 6200 rpms and it does look like its about to dip.

What springs are you using ?? Stock or did you upgrade ??

Sales2@Texas-speed

iTrader: (5)

Looks good, Rick! I think she'll perform how was was intended to when you hit the course! Let me know if I can help with anything else down the road

rikhek

iTrader: (1)

Yes, stock TB. I don't know why he didn't stay in it. It pulls and makes power to redline which is set at 6,700. I wasn't there when it was on the dyno. I'll ask my tuner tonight. I imagine he'll say it had peaked and as such he let off.....

Rick

rikhek

iTrader: (1)

From the Texas Speed website:

The PRC Stage 2.5 Cylinder Heads Feature:

Brand New GM 5.3l Based Cores
Smaller Combustion Chambers For 10.75:1 Compression
Stainless Steel 2.04"/1.575" Valves
PRC Double Spring Kit Complete With
Springs, Titanium Retainers, Seats, & Seals

Rick

gnx7

iTrader: (28)

Spin that sucker to 6600rpm+ and port the stock TB which should result in 430rwhp+ easy.

A friend had a near identical combo and made that kind of power.

With rod bolts in a stock '99 shortblock I spun my motor to 7100rpm routinely for 20K miles with no issues and hundreds of miles road racing at local tracks. (AFR 205's and TSP 233/239 cam) '00+ motors came with better rod bolts....

rikhek

iTrader: (1)

Rev limiter is set at 6,700 as suggested by Texas Speed. On the track I shift at 6,600.

What's involved in porting the TB?

Rick

ls1toy

did you use the cometic .40 head gasket? Also do you have the ls6 intake manifold? I have the same combination with the cometic .40 headgasket+ported fast intake manifold+bluemaxx throttlebody.

3rdgentug

iTrader: (23)

im also guessiin your an m6 car ?

rikhek

iTrader: (1)

1. Stock OEM head gaskets.

2. Yes, it's a 2001 so it came with the LS6 intake manifold.

3. Intake and TB are stock, untouched.

Rick

rikhek

iTrader: (1)

Correct, M6.

Rick

2002 SS HUGG

I'm looking at doing the exact same combo, 228r lsa112 cam and same heads. Got 02' SS so I have the Ls6 intake. Just trying to do some research before I take the plunge. Great numbers!