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

 

Thats my exact H/C combo thats being installed. Good Numbers. Got a Vid?

 

ls1 intake i imagine?

 

Considering the cats and FIPK, those numbers are not bad...is that a locked automatic or a 6 speed?

 

Congrats on the numbers!

 

How does does it drive on the street? I would like to hear your thoughts on how it performs now, compared to before the heads and cam. It must be fun, and I bet it pulls like a ****.

 

are those all your mods? m6 or a4?

 

I would say thats a auto

 

Rick has an M6 and he uses his car on road race tracks for HPDEs and track days.

 

sounds pretty good to me, although i would have expected the torque to be a bit higher. what was the compression?

and was that with an ls1 or ls6 intake?

my guess would be 425rwhp solid in an Fbody, which is right around the typical number for that combo.

 

Output was exactly 425 hp with dyno set to STD. The SAE numbers were a bit lower.

As John stated it's a M6 set up for road courses.

As a 2001 it has the LS6 intake.

Texas Speed advertises the compression as 10.75:

This all new 5.3l cylinder head program offers smaller sized runners, upgraded valves, & PRC Valve Springs! The all new cylinder head is a result of over 6 months of testing & tweaking in effort to offer the best combination of runner size, and value!

Side by side flow testing has shown over 15cfm improvement over a popular competitors 225cc as cast cylinder head! This cylinder head was designed to be the ultimate in bolt on cylinder head for customers wanting to keep pricing down with stock castings!

Intake Flow Information:

.300 208
.400 257
.500 290
.600 312


The PRC 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

 

The mods listed in the first post is what I have. Nothing else.

Rick

 

Drives well. Below 3,300 RPM I've given up enough to feel, however, down that low it's a worthy trade.

Cam comes in at 3,300 RPM. Full on at 3,500 and pulls very strong up to the rev limiter set point of 6,700 RPM.

I'm pleased with the results.

Rick

 

Nice numbers. Gotta love that cam, I know I do. Have you considered a fast 90 with a nw tb? It would definately pump the numbers up a little.

 

What does the cam reline at? Looks like you let off early.

 

Do you have an afr graph for that run too?

 

man those PRC 5.3 heads are really starting to impress me. good job man!!

 

That is a good combo but I'm afraid you should be making more.
Looking at the graph you seem to need more tuning.
Did you have any knock retard?
That combo should be good for 430/400 numbers, over 420 for sure.

Cats anf FIPK are not robing you so much, those are good cats

 

I personally don't believe the gains from a FAST 90 or new TB justify the price...

Rick

 

As stated in Post #13 above rev limiter is set at 6,700. Didn't let off early, just didn't graph it all the way. I don't know why........