torque ?
Thread Starter
Racer
Joined: Sep 2002
Posts: 424
Likes: 0
From: Va, Beach VA
torque ?
I was on another website and was looking at about 8 guys stock or near stock hp/torque dyno numbers.What I found amazing is that all of there torque numbers were higher than hp. Doing somemore research I found that excluding nos. and maybe turbo in other words naturally aspirated cars virtually all of them the hp exceeded the torque numbers(even in the mild cam cars). Exhaust being amongs the first mod...... would this explain why??
if not then what? I am perplexed because my dyno results were 343hp/320 torque which the torque seems to be the same stock that just about everyone else has. Any takers on this????
if not then what? I am perplexed because my dyno results were 343hp/320 torque which the torque seems to be the same stock that just about everyone else has. Any takers on this????
Melting Slicks
Joined: Oct 2003
Posts: 2,834
Likes: 91
From: California
Re: torque ? (Rays Vet)
my car stock plus a halltech stinger air filter dyno'd 319hp and 325tq. Same day installed LG headers and a very conservative (rich) tune and I pulled 340hp and 357tq.
Seems hit or miss, talking to my Dyno guy/tuner he said he has seen cars like mine that have more torque than hp, others don't.
Seems hit or miss, talking to my Dyno guy/tuner he said he has seen cars like mine that have more torque than hp, others don't.
Racer
Joined: Jun 2004
Posts: 474
Likes: 0
From: Moncks Corner South Carolina
Re: torque ? (Rays Vet)
99 M6 with 48,000 miles, Blackwing, Corsa Indy Exhaust, Dyno Tune - 330 RWHP, 340 FPTQ. Found out later that I had exhaust leaks from stock pipes at both muffler flanges. Welds were cracked. Installed Corsa X Pipe. No more leaks, probably a little more power. Most cars that day had higher hp than tq. except for mine.
Racer
Joined: Dec 2003
Posts: 346
Likes: 10
From: New Orleans La
Re: torque ? (Hiteck)
HP can not excede torque until 5252 RPM. It so happens in the LS1 that the power peak is generally between 5200-5600. Most cars that have higher horsepower ratings than torque rev to or above 7000 RPM. The higher the RPM of the engine the greater the horsepower rating with the same amount of produced torque. The ls1/ls2 doesn't use the higher flowing set ups such as the v-12 ferrari's or even the 4 valve per cylinder set up of most imports today. Either approach allows for more air to be flowed into the cylinder at high RPM's allowing for a long flat torque curve that extends well into the 7-8 thousand RPM range. If you produce 400 torque(ferraris@4500) rpm that's less than 350 horsepower but if you produce the same torque@7300 rpm that's 515 horsepower. Another good example is the honda S2000. Just off the top of my head I think it produces 145 torque@4000ish RPM but it still produces that same 145 torque@9000 RPM allowing it to produce 245 horsepower.
Pro
Joined: Jan 2004
Posts: 749
Likes: 0
From: Las Cruces New Mexico
Originally Posted by Demented
HP can not excede torque until 5252 RPM. It so happens in the LS1 that the power peak is generally between 5200-5600. Most cars that have higher horsepower ratings than torque rev to or above 7000 RPM. The higher the RPM of the engine the greater the horsepower rating with the same amount of produced torque. The ls1/ls2 doesn't use the higher flowing set ups such as the v-12 ferrari's or even the 4 valve per cylinder set up of most imports today. Either approach allows for more air to be flowed into the cylinder at high RPM's allowing for a long flat torque curve that extends well into the 7-8 thousand RPM range. If you produce 400 torque(ferraris@4500) rpm that's less than 350 horsepower but if you produce the same torque@7300 rpm that's 515 horsepower. Another good example is the honda S2000. Just off the top of my head I think it produces 145 torque@4000ish RPM but it still produces that same 145 torque@9000 RPM allowing it to produce 245 horsepower.
Hp is calculated from torque. It all depends on what rpm you make power.
Thread Starter
Racer
Joined: Sep 2002
Posts: 424
Likes: 0
From: Va, Beach VA
Thanks for the replies. I was interested in what causes this because I feel my dyno #are off the mark by 20 to 30 hp. ANd btw this is tuned.
And based off another site that has a dynometer archive that has plenty of cars with the same combo.
And based off another site that has a dynometer archive that has plenty of cars with the same combo.
Melting Slicks
Joined: Oct 2003
Posts: 2,834
Likes: 91
From: California
Originally Posted by Rays Vet
Thanks for the replies. I was interested in what causes this because I feel my dyno #are off the mark by 20 to 30 hp. ANd btw this is tuned.
And based off another site that has a dynometer archive that has plenty of cars with the same combo.
And based off another site that has a dynometer archive that has plenty of cars with the same combo.
Dyno to Dyno, State to State, Elevation to Elevation, Humidity to Humidity, results will vary.
Dynos are great for 1 thing, validating a tune and modifications.
You need to do a couple things to keep things mostly accurate though, like only using the same dyno, don't go from shop to shop. and only compare SAE corrected numbers from that same dyno.
My 340hp 357tq could be 380hp and 440tq at your dyno, or it could be 310hp and 320tq... It's only good for a tuning tool.
Same thing goes for the drag strip, My local (2 hours away, I guess that's local) track is a P.O.S. so a 13 there might be an 11.5 at another track in Texas, or the East coast.
In other words, I try not to get caught up in HP claims or 1/4 mile numbers. You'll find that the people that did that got egg on their face when their "faster car" ran at the same track at the same day against a "slower car" from the south.
Enjoy your car, and try not to spend too much modding it
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Thread Starter
Racer
Joined: Sep 2002
Posts: 424
Likes: 0
From: Va, Beach VA
Stop modding!!!!!! Stop modding!!!!!! I wish I could !!!!trying to hit the
11's with 343/ 32x hp./torque is not going to be easy.....Anybody out there get there with this power range with a best 60 time of 1.80???
This has to have been the slowest vet in the than I've ever seen!!!
13.95 consistantly bone stock which seems 3 to 4 tenths off the "average".
11's with 343/ 32x hp./torque is not going to be easy.....Anybody out there get there with this power range with a best 60 time of 1.80???
This has to have been the slowest vet in the than I've ever seen!!!
13.95 consistantly bone stock which seems 3 to 4 tenths off the "average".