Generation IV External Engine - How much rwhp are you ls7 NA guys making these days

Love the new z06s, and was wondering what you guys where making w/ H/C on stock cubes (as if 427CIs ain't enough). Was thinking of getting a Z after law school (meaning after I pay back the loans so they don't chop my legs off) for the DD. Course by then there will probably be a C12 z06!

I'm running (was running) 535 RWH and 493 RWT with my forged LS7 in a 2001 WS6 Trans Am A4. It's tore apart right now getting more stroke. This HP stuff is addicting!! Traver

I'm running (was running) 535 RWH and 493 RWT with my forged LS7 in a 2001 WS6 Trans Am A4. It's tore apart right now getting more stroke. This HP stuff is addicting!! Traver

NICE. More Stroke??? How long has the new block been under the hood?

I had about 20 track passes and maybe 2500 miles. I always want to be on top in my neighborhood and there's a '74' Dart that's a real pain in the arss! It's pretty well a racecar, tubbed, lexon windows and 14.1 comp..........all that good stuff but I'm still gunning for him! Good clean fun and it keeps the blood pumpin and the heart healthy!! Traver

Oh ya, I'm putting a 4.125 stroke in it and porting the heads some more not to mention a couple other little tweaks!:devil:Traver

Damn!! Makes me wish I had gone w/ a stroker package. Whats the best ET? MPH? Any videos?

We have built a 611rwhp LS7 in a C5. We have built a few cam only 580+rwhp C6Z06's.....our standard smaller LS7 cam which is pretty mild-med usually does about 540 to the tire. With the right cam and heads the LS7 is capable of big power.

Zach

Look at sig for info.

check the corvette forums,lots of 427 mills in there. the qm600 cammed 427s with ported heads/intake are putting around 600 to the ground.

570's up to 612 rwhp...

no flames to any one tuner !!! however you may fine some big hp 550 to 600 rwhp bragging ### s with no track slip & weight to back the hp !!! claim !!!! i've had 525 rwhp 427 & 560 427 ...dynos some times ..make your track slip ..a puzzling thought !!! my 427 best on NO2 TUNE 10.6 127..OTHERS SAME COMBO & parts 9.9 132..hope this helped

I'm not embarrassed to say my track times at 535 RWHP. I was running 11.1's in the quarter and cutting 1.49 60ft times on Nitto drag radials and a hefty 3,820 race weight. I could never launch off the line more then 2000 RPM's cause my Nittos would bust loose everytime! If I would of had some Bogarts and drag tires I would have definately broke the 10's. Check out my video in the 11 second section of the board. Traver

nice video traver just went and saw looked good

Thanks Bandit1.......and believe it or not this was before my QM600 swap so I definatley know the 10's were there! I will never know now though? Got to start all over with the 441. I hope I don't go backwards!? :eyes:Traver

you'll do fine boss have faith my brothera hahaha looking forward to seeing this thing come together keep us updated

Do you know why Rev Extreme claims only the 95 mm TB will fit on the lS7 intake?

Have no clue i have the 100mm on there and it fits fine I will say that it is just barely and i can see the edge of my seal but its sealed just fine. maybe they mean that the 100mm will just barely fit I dont know

no flames to any one tuner !!! however you may fine some big hp 550 to 600 rwhp bragging ### s with no track slip & weight to back the hp !!! claim !!!! i've had 525 rwhp 427 & 560 427 ...dynos some times ..make your track slip ..a puzzling thought !!! my 427 best on NO2 TUNE 10.6 127..OTHERS SAME COMBO & parts 9.9 132..hope this helped

Well - I for one am preventing one such tuner from posting drag strip time slips... as I didn't have my 600rwhp LS7 car built to thrash down the 1/4 miles strip, but rather beat up around a road course.. ;)

The last thing I feel like doing is blowing the stock 2001 rear end on my car "proving a point" :)

Just to update since my 441 build is done. I'm now at 564/516 at the rear wheels. It doesnt' seem like much more but through a 4L60e and a Ford 9" I don't think it's too bad since I did run a 10.46 at 131 MPH the first time at the track. Also got a 6.4 at 110 MPH through the 1/8th before I got the boot for not having a bar! :bang:Traver

Are the 427's you guys are building streetable? I'm looking to go either 416 or 427. I'm leaning towards 416 since I'm told I could still use a little spray or boost. I'm told the 427 isn't really for boost or spray. Any input?

Are the 427's you guys are building streetable? I'm looking to go either 416 or 427. I'm leaning towards 416 since I'm told I could still use a little spray or boost. I'm told the 427 isn't really for boost or spray. Any input?

If you build a 427 out of a 4.065 bore block, then yes that is good advice. but if you build it with a 4.125 bore, then you shouldn't have any problems doing some spray or boost assuming it is built with whatever you want in mind.

I have a very streetable LS7 430. 502whp on a Dyno Dynamics in a very hot (>100) shop.

570's up to 612 rwhp...

Mikey i see in your sign that u have a 675 rwhp on a 427 ls2- soild roller-

is that a street engine or a race motor only-

i am in the middle of working out which to go soild or hydro-

just want to know if it;s a streeter of how the soild reacts to street conditions

Any help would be nice-

Thanks

Not an LS7 but good info for you more budget oriented guys.
My setup:

LS2 block
Darton 4.125 sleeves, Lunati 4.0 Crank, Oliver 6.125 rods, Wiesco Pistons
LS6 TSP stage X heads w/ Alum rockers, Unported Fast 90 & unported LS2 TB, 85mm Maf, Comp 248/254 601-610 112 cam
511rwhp/480 rwtq
Crank and rods are a little pricey but they dont have to be.
Planning on shooting for 600rw n/A ~ December with an LS7 Head/Intake/TB/maf/UD pulley upgrade. Gathering parts now as deals arise.

11.3 @ 128 on Nitto's w/ a 1.87 60 foot. Easy drive away from the tree launch didnt floor it until 2nd about 100 feet out. Has a 10.7 ish in it on good tires without totally abusing the car.
2001 Z06

My pump gas LS7 was making 545 rwhp and 497 rwtq and ran many 9.9 passes with a best of 9.93@136.90 in my A4 C5. I have since changed to a different cam design but have not gotten a fulll pull on the dyno as the tires continued to break loose as I squeezed the throttle open. The new camshaft made 35-40 more rwhp down low and 25-30 more rwtq but I had to let off at 5800 due to tire spin.

I see hp #'s but where is all the torque. That is what moves the car. The TQ is what gets a better et.

My LS7 Block based 427 made 485 rwhp/485 rwt on the first dyno tune. It is 98% street. AC and all the extras. The comp cams cam that I had was a pain to get the idle right on, so I have since changed the cam to a Lunati VooDoo (less overlap), but have not had it re-tuned. It feels a lot stronger and is scary on the street. It sure is a lot more fun to drive now. The tune is not far off, but I am going to get it dialed in and dynoed again soon. Have not taken it to a track yet. Maybe later.

the guys with the 4.125 stroke does anything special have to be done for that big of a stroke?

no flames to any one tuner !!! however you may fine some big hp 550 to 600 rwhp bragging ### s with no track slip & weight to back the hp !!! claim !!!! i've had 525 rwhp 427 & 560 427 ...dynos some times ..make your track slip ..a puzzling thought !!! my 427 best on NO2 TUNE 10.6 127..OTHERS SAME COMBO & parts 9.9 132..hope this helped

How about Ragin Racin. They don't play. Realistic numbers and times.

551hp and a 10.62

http://www.youtube.com/watch?v=Pbglo-IUtD0