21STCENTURYMUSCLECAR

After trying 4 different cams and 3 different headers
on my C6Z we are today finally swapping the headers
that have been on the car for 2 months out for the
"other brand" headers that we normally don't sell
and have not yet tested.
We made 3 dyno pulls this am and recorded the HP and TQ #s along with the coolant temps of each run.
We have a 0% correction factor today and should have the car back on the dyno shortly for the new #s
We are not changing the tune or anything else on the car other than the headers.
This car has our new 21CMC GT7-3 custom grind cam, 160 stat, TR55 plugs, stock air filter and assembly, the long tube headers w. hi flow cats and an in-house tune. From what I have seen posted, we should see some big gains in TQ. I will post the numbers as soon as we have them.


This same car made 544 RWHP and 500 RWTQ with the filter removed.
We will be testing the new "Air Charger" System for the Z next week and expect some nice gains.

Best Regards,
John Page
Twenty First Century Muscle Cars
Authorized Lingenfelter Performance Dealer

IH8PONYS

DDSLT5

cerino2000

Redline Motorsports

21STCENTURYMUSCLECAR

2 Best Runs for each header system

Brand "K" Brand "L"
RWHP RWTQ RWHP RWTQ
527.7 471.8 526.2 490.6
526.8 472.4 528.9 486.4

These were the best 2 runs for each brand, coolant temps were started @ 178 on all runs
2006 Z06 w. 2300 miles
21 CMC GT7-3 Custom grind Camshaft,
160 degree Thermostat, NGK TR55 Plugs,
21 CMC LS7 Tuning, header systems WITH hi flow cats, stock CR, no elec. water pump or UD pulley, stock air filter and intake

Best run with filter removed was
544 RWHP & 500 RWTQ

Please contact me for further information on LS7 performance mods or tuning
Cold Air Induction testing coming next week, Lingenfelter LS7 Cylinder heads coming soon.
Lingenfelter 427 Twin Turbo Z06 In Progress.

Best Regards,
John Page
Twenty First Century Muscle Cars
Authorized Lingenfelter Performance Dealer
www.21stcenturymusclecars.com
972-417-7188

DDSLT5

NICE! Those are some SWEET numbers for headers and tune only! Car is a monster!!!

urslooow

wow! any codes?

vegasdude

and cam shaft!

mike1952

it has a custom cam.....

C6400hp

So, what the data tells me is that there is not much HP or torque difference between the two headers tested. Any more info on the brands other than Brand A/B or should I just read between the lines?

Yogivette

Looks like there was quite a bit of TQ difference to me considering its the same part just different brands.

Mako7

Which brand is the one you usually do not sell: "Brand A" or "Brand B"?

Thanks for the great work! Nice to have straight-shooting work!

C6400hp

I would think the A system HP gains would discount the B system torque gains espescially since we are only talking <3 hp and <5 Lb Ft difference. That is certainly not enough to notice.

phantasms

Could someone PM me the different brands.

fa63

Well, peak numbers don't tell that much. How about scanning the dyno sheets so we can see the area under the curve for both for the whole RPM range?

niphilli2

Kudos for posting results even though they are contrary to what you thought was going to happen. Looks like Header B does exactly what it advertises. Can you post an overlay? Would be very interested to see area under the curve.

racerns

What numbers are you looking at? It looks to me that Brand "B" has 14-19 Ft lb more than "A" for peak numbers. A full graph would be nice to see to the comparison through the entire curve. I would bet that "B" has higher HP through out the curve even though their peak numbers are very close.

C56spd

Great numbers JP!

Geneus

Which headers (A or B) install with a "boom?"