How much rwhp are you ls7 NA guys making these days

[Stang's Bane]

Originally Posted by chieftransam

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.

[ss dave]

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

[njc.corp]

Originally Posted by mikey

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

[jason99frc]

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

[DBN]

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.

[corvet786c]

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

[Deeavi]

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.

[89Formulaws6]

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

[Mr Z51]

Originally Posted by STROKER R/T

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