pHEnomIC

iTrader: (14)

I dynoed my 404, torquer v3, ls6 intake, and stock ls1 heads the other day.

I thought it was worth posting about since it was strange numbers, more torque than hp. My engine also has 11.5 compression so it should be pretty violent.

I dynoed 422 rwhp / 430 rwtq (m6, 3.42s, 10 bolt).
It was 90* out so I feel that lowered it a bit (how much would it affect it).

I tuned it myself on the street with hptuners and a wideband. What is ironic is that I apparantly guessed the best settings on my own, i played with the fueling and spark a little bit but 12.7 w/ 23* worked best (little more advance in mid rpms).

So i feel the heads are really a huge bottle neck and i need to upgrade to at least some l92s /l76 setup or some nice ported heads. They just cant provide the needed airflow up top.

I expected a bit more because the thing is an absolute blast to drive, but looking at the torque, curve, it hits almost 420 at 4 grand and preaks at 5ish.

Btw, also have a nitrous wet kit (obviously didnt use this)

Slowc5

iTrader: (2)

I am running the same exact set-up on my stroker setup with stock heads..I dynoed 423rwhp/460rwtq. I just purchased the L92 heads though I think they'll get me up to 500rwhp.I'll let you know once I get all the parts and everything installed..

Pwebbz28

iTrader: (31)

Needs a bigger cam. Buddy of mine did 470/470 with stock 241's and ls6 intake. Cam was a 244/248 .612 .615

ringram

Just because a bigger cam allows more air in doesnt mean its the best way of getting more power. A polished turd still tastes bad. Heads get my vote.

davidws6

iTrader: (36)

"I expected a bit more because the thing is an absolute blast to drive, but looking at the torque, curve, it hits almost 420 at 4 grand and preaks at 5ish"

Why? the air velocity on those stock ports is just right for all that mid range torque. But your suffering on top end cause of it !

I talked with Richard @WCCH and he said more cubes then 400, need L92's or etc.

+ 1 vote on new heads n stick with the same cam

pHEnomIC

iTrader: (14)

I think i will be going w/ l92s and the l76 intake at least for now, no way to afford crazy good heads, and the l92s even in stock form seem to do very well.

How much does air temperature affect readings?

I noticed when scanned, my airflow reading was like 340 g/sec and airmass of .85 ish g/cyl. At cooler temps it seems to get as high as 390 g/sec and 1.05 g/cyl, which i understand are somewhat proportional to horsepower and torque respectively.

smok'nZ

iTrader: (160)

if you get a set of L92 heads i think you should spend the 400 for a new cam btw you should be able to pick up a L76 intake for 200 or less and a 90mm tb 200-250$