2xLS1

iTrader: (25)

Here is a bone stock Z06 LS7 with around 1K miles before and after installing a set of American Racing headers with catted pipes. No tuning yet.

TransAmGT

iTrader: (20)

wow...only 5 hp...that suks, guess the factory manifolds flow awesome!

black01_WS6

iTrader: (13)

the power under the curve is where its at. how does the car feel?

dnm12

iTrader: (13)

but 16 ftlbs!! thats at least something

bad95killer

Nice stock #'s but it should be tuned with headers

peace

C.W.A

gain of 5 hp 16 tq not bad with a tune he could get another 10-15hp

2xLS1

iTrader: (25)

Didn't drive it. Not my car.
Its around 16 hp in most other areas of the graph before peak. Not quite the 25 American Racing said to expect.
Waiting for the software and cable to arrive.
This is a good example why you should not just look at peak numbers.

Ksett

True but I wonder if he could gain 10-15 hp from the tune alone on the stock manifolds.

Worm

iTrader: (2)

Ouch, whats the A/F like? Bet its rich as hell.

DocEwww

iTrader: (1)

American Racing headers? Their cats too? Never heard of em...unless thats the wheel manufacturer.

2xLS1

iTrader: (25)

I've never heard of them either, but that's what the shop that ordered them said they were. They reminded me of FLPs that I've installed on C5s before except the cats (very small) were welded in the pipes instead of them being clamped in like the FLPs. It wouldn't surprise me if they were made by Dynatech like FLPs and just labeled for someone else. I even googled American Racing Corvette Headers and came up with nothing. The install only took about 3 1/2 hours anf the fit and finish was really nice.

NumberOneSled

iTrader: (1)

I believe VetteDoctors has these headers made for them.

2xLS1

iTrader: (25)

Here is the before and after A/F. The leaner one is after. The battery was disconnected during the install so I don't know if that would have effected the A/F or just the headers themselves leaned it up. The car was not driven. It was dynoed, the headers were installed while still on the dyno, (above ground dyno) and then redynoed.

lilbuddy1587

iTrader: (1)

People.....You need to look at the power under the curve. Peak performance really doesnt mean much. You guys get caught up with peak numbers wayyy to much. To someone who knows what they're looking at would say thats a pretty damn good increase through out the power band, especially the torque! Get'er tuned and That sucker will move.

foff667

iTrader: (2)

nice gains...gotta look at under the curve rather then just at peak #'s and keep in mind they are still catted headers with no tuning!

lilbuddy1587

iTrader: (1)

Possible, but as you can see, its making more power right at the beginning of the pull.

LSs1Power

iTrader: (5)

LG Headers made almost 40rwhp and 50rwtq gains on a LS7 with no tuning.

niphilli

Man those things need a bigger camshaft (cam dies after 6K)

Hennytime

iTrader: (33)

that seems really low because when lg motorsports did theirs they got like 35rwhp or something crazy

BROKEN

iTrader: (7)

i helped install the headers and got to drive the car before and after the headers it made some difference in the mid range it pulls very hard all the way to 7100 but ther will be more to come.... 2xls1 doing the tuning and possibly some juice we will see!!!