hendrixx

Im just really curious... me and a couple buddies have been talking about the power my car makes... on a DynoJet made 437whp and 410wtq, on a Dynomite it made 404whp and 407wtq...

either way, I have no idea what tune is in the car... but with the list of parts i have, theyre the most hp gaining parts for an LS1!


SLP lid

LS6 Intake

AFR 205 heads

SVO injectors

QTP longtube headers/straight piped

and a custom cam
In: 279, Ex: 283 degrees
In: 0.591, Ex 0.598" lift
LCA: 114
ICL: 110
Preload: 0.005"

I only run 94 octane

I would think Id be making much more hp to the wheels. It really bothers me... just want to know from all you guys with LS experience, does this seem correct to you? or should I take it somewhere with HP tuners and get a good tune? I got 3.23 gears aswell, bought 3.90s that Ill put in over winter or something.

ScreaminRedZ

iTrader: (3)

Numbers don't look horrible to me. Do you have a graph? How did the air/fuel look? Probably do want to have the tune double checked since it's an unknown.

thunderstruck507

iTrader: (18)

Automatic or manual?

What exactly do you mean you don't know what tune is in it? That is the only thing jumping out at me.

sujomatt

iTrader: (7)

Please redo cam specs - the intake and exhaust seem wrong. Also, the LS6 intake is not helping the cause. I'd recommend getting a FAST 92 minimum and a fresh tune!

Also, Auto or manual?

thunderstruck507

iTrader: (18)

Those specs are advertised duration. Should equate to high 22x/23x from the looks of it IIRC.

sujomatt

iTrader: (7)

Yea I was not sure of what it turns into lol

hendrixx

those are the specs the original owner told me.

Its a 6 speed, also, the original owner had HPTuners, and put his own tune in it. I have two graphs from two different dynos with basically the exact same power curve. Not sure what the AFR is on either dyno runs... on the dynomite (a friends dyno) we left the AFR out cause usually it costs extra (and he said if i made over 400whp hell give me the pulls for free), but the tank was low on gas when i brought it to the shop (i didnt plan on dynoing it) and the dyno is above ground so youre back end is sitting up on an angle, I was wondering if maybe the gas was at the front of the tank causing it to be lean? which may explain the huge difference in numbers between the two dynos?

anyways, on the second pull we hooked up the wideband, and it was idling at 19, so we decided we arent going to do another pull without getting gas first. we never ended up doing another one anyways, but i was disappointed with those numbers. and still not satisfied with the original numbers from the previous owner.... but heres the graph he gave me that he dynoed last year or soemthing. Only difference between then and now is there were cats on it then.



Anyone know of a place in southern Ontario to get a tune? A well known shop is preffered


thanks for all the input guys, the numbers were bothering me.

Nitroused383

iTrader: (10)

437 hp / 410 tq is actually pretty decent for that size cam and a LS6 intake. Doesn't sound low at all. A ported fast would get you up around 450-460 range.

thunderstruck507

iTrader: (18)

On a AFR headed manual trans car I would hope for a little more.

hendrixx

thats what Im saying thunderstruck... I think im going to take it somewhere and get a tune, once my 3.90 is in and my new exhaust... the one thats on it is falling apart (**** welding)... any ideas what kind of power i SHOULD be seeing?

DynoDR

iTrader: (1)

That is something I have heard before

redtail2426

iTrader: (10)

looks right to me,all dynoes read differently,so you cant compare.Go to the track to get some real info about the power your making.If you can break 120mph then your doing good

Tongboy

clean dyno pull really speaks volumes about a generally good tune. knowing that it's a home tune you should put the wideband on it and verify you aren't going too rich and that your timing is properly setup to make the most power. otherwise it looks to be a good bit of parts making around the power you would expect it to make.

ryanzcastro

iTrader: (1)

did you monitor you Air fuel ratios? Different types of dynometers read really differently and their correction factors may vary alot. Dynojets tend to read the highest. For consistency, why not do a couple runs on a dynojet again. you will see that you didnt really loose any power, given that your car is in the same running condition as before.

Silver408z

iTrader: (1)

The people making the 450+ are most likely runnng a fast intake and not a ls6. A ported fast you would gain 15+ hp most likely. Your 437 number seems inline with a ls6.

As far as the differences between the two times you dyno'd could easily be the different types of dynos, different days and other various things. Dont worry about the differences.

yessir

iTrader: (5)

looks like it might make a tad more power if you spun it higher.... even it power just flattened out car would still be quicker...