racerx_72

About to do a new build and I'm thinking about doing a heads/cam LS3. What's the most RWHP you have seen out of a LS3 car.

MikeWS6

I saw a heads/cammed ls3 Vette do 517rwhp. Pretty crazy motors.

30th t/a

iTrader: (51)

510-525rwhp.

jdub38672

iTrader: (4)

Stroked ls3 easy 550. I'd say ls3 with good heads and cam to match 500 without skipping a beat.

MikeWS6

Cammed / procharged is where it's at if u got an ls3.

Silver408z

iTrader: (1)

I have personally raced a very well setup ls3, cam boltons, d1 procharger, e85, meth and got beat by it pretty bad. It is making over 800 rhwp.

VTC_WS6

iTrader: (9)

<-- Simple H/C setup = 501whp thru an S60

ws6guy27

iTrader: (31)

Iv seen 550 rwhp in a gto had tfs 235s amd was a 418 ls3. Good cam

racerx_72

Thanks for the info but have decided to do a 416ci motor.

Pray

iTrader: (7)

I did 575/530rw four or five years ago with a 416 and cathedral heads. It is getting some upgraded mods soon and will be back on the dyno. We made 510/470rw with a 230's cam and factory ported heads on a stock cube Camaro.

Detoxx03

iTrader: (14)

N/A will make somewhere in the 500's.

6D9 Matt

Agreed. Low 500's if you arent stroked.

Blackpanther99

iTrader: (8)

LS3s sure love boost also.

A.R. Shale Targa

iTrader: (2)

Friend of mine put PRC 255 heads and their 231/236 cam with catless TS
longtubes and made 544 rw...STD in a 12' GS vette,M6...after he ixnayed
that combo (rod bearing didn't like a 3 minute burnout @ 7Gs) he had TS
ship him a 416 in which we swapped the cam and heads. He hasn't had it
back on the rollers...just street tuning...but the butt cheek dyno says holy
F@CK !!

Detoxx03

iTrader: (14)

MikeWS6

Saw one today. 690rwhp.