LE2 Dyno results.
Thread Starter
Joined: Nov 2006
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From: Cloverdale, BC
Thanks guy's Sorry I havnt got the dyno sheets up like I said I would I had problems loading them on to the thread and havnt had time to make a photo bucket accout and load them up. Going to the track tonight after school. Ill post the times tonight or tomorrow morning.
TECH Enthusiast
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From: Texas/Somewhere in Southwest Asia
Okay, I will be the average Joe just trying to contribute to discussion with the facts I have on hand.
The other guy can be the infallible & righteous bastard who cant post a thread with inflaming others or acting an ***. I doubt I will need the help on this one if you one bases the decision on past history and posts.
Perhaps 20 years ago I would've cared about a popularity contest, but I'll go ahead and declare you the winner. I hope that makes you feel better. 
Nothing was said about AI/LE anything in this thread. That is on all of you. I have no AI parts on my car. I am a Lingenfelter fan or nutswinger or whatever you deem the best title.
It'll be interesting to see what the pool is about 5 more years down the road. A 9" will then net a 30rwhp loss, LT1's will be dynoing 500rwhp and running 13's...
To the OP- Great job on the dyno numbers. If you have a track and like to race then focus more on what improvements you can do ET wise and don't worry about reaching a 400rwhp mark on a dyno. If you don't have a track then I'm sorry.
Nothing was said about AI/LE anything in this thread. That is on all of you. I have no AI parts on my car. I am a Lingenfelter fan or nutswinger or whatever you deem the best title.
It'll be interesting to see what the pool is about 5 more years down the road. A 9" will then net a 30rwhp loss, LT1's will be dynoing 500rwhp and running 13's...
To the OP- Great job on the dyno numbers. If you have a track and like to race then focus more on what improvements you can do ET wise and don't worry about reaching a 400rwhp mark on a dyno. If you don't have a track then I'm sorry.
I don't get what the big deal is that a ford 9" eats up a little more power than a 10 bolt
simply because he stated that the car might make 15+/- rwhp with a factory rear doesn't seem out of the question
car craft even had a decent article on a similar subject comparing an AOD backed motor with a 9" vs a Muncie 4 Speed backed motor with a 12 bolt. the AOD/9" car had around 36% average parastatic loss vs the M4/12 Bolt car that had around 18%. heavy duty rears and strong autos eat power
simply because he stated that the car might make 15+/- rwhp with a factory rear doesn't seem out of the question
car craft even had a decent article on a similar subject comparing an AOD backed motor with a 9" vs a Muncie 4 Speed backed motor with a 12 bolt. the AOD/9" car had around 36% average parastatic loss vs the M4/12 Bolt car that had around 18%. heavy duty rears and strong autos eat power
That's cool. Assuming you are staying w/in the proper duty cycle if tuned properly it is going to deliver the same amount of fuel regardless of injector size. The pulse width on a larger injector will be shorter than one that is smaller. That's about it.
Last edited by SS RRR; Jun 26, 2009 at 02:27 PM.
from what I've heard from some of the super stock guys you will want the smallest injector you can get away with safely, but this is merely what I remember hearing
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Verdad Gallardo I don't get what the big deal is that a ford 9" eats up a little more power than a 10 bolt
simply because he stated that the car might make 15+/- rwhp with a factory rear doesn't seem out of the question
car craft even had a decent article on a similar subject comparing an AOD backed motor with a 9" vs a Muncie 4 Speed backed motor with a 12 bolt. the AOD/9" car had around 36% average parastatic loss vs the M4/12 Bolt car that had around 18%. heavy duty rears and strong autos eat power
simply because he stated that the car might make 15+/- rwhp with a factory rear doesn't seem out of the question
car craft even had a decent article on a similar subject comparing an AOD backed motor with a 9" vs a Muncie 4 Speed backed motor with a 12 bolt. the AOD/9" car had around 36% average parastatic loss vs the M4/12 Bolt car that had around 18%. heavy duty rears and strong autos eat power
Yep thats what I said. I believe that if I had the 10 bolt I would make 400RWHP on the dyno. With the heavy 9" ring and pinion and the Detroit Trutrac, I believe there is ~15RWHP of loss WRT my setup.
Its documented (with actual numbers) by others that they lost similar amounts of power when they went with the Dana 60 from the 10 bolt. And from what I have read here and elsewhere, the 9" robs more power than the Dana due to the lower pinion and greater tooth contact. And I am still erring on the low side and manage to get SS RRR's panties all wadded up.
Oh **** there I go with the facts and reasonable assumptions again.
What some of you don't realize is that the subject of differential loss was covered a massive amount of times starting at least 10 years ago when the KTRE crooks actually put out a few 12-bolts, then Strange and then Moser's 9". Everyone who ever got one were just as curious about rwhp loss, would dyno their cars and all would come up with a 8 to 10rwhp loss. Because dynos seem to be far more hp friendly these days it's not surprising the numbers are becoming larger than from years past. Around 15 years ago MTI was putting together LT1 383 packages with the 306 cam and Gallant heads, making 420rwhp and 390 to 400tq turning 118 to 120mph traps in f-bodys weighing in the 3550 to 3650 range. Whatever floats your boat though, if it really is that much of a concern over what dyno numbers say then I am at the wrong party.
this is LS1tech, people live and die by the dyno. anyone with a non-t56/10bolt setup is quick to explain their loss #'s because so many people use the numbers t56/10bolt drivetrains produce as a standard. I can't tell you how many times people would ask me what I dyno with my old cam only setup and tell me how low it was or simply be suprised that I was door-to-door with or pulled their cars that would make 25 or so more rwhp (I.E - T56 LS1s). it's the equivilent of telling people the temperature outside in celcius or telling the speed something is traveling in kph. no one (atleast not myself) is looking to add horsepower that is non existant, just converting it to a commonly accepted standard.
yes I know differential loss is no where near a new topic, just using a current and relevant article for a point of reference
yes I know differential loss is no where near a new topic, just using a current and relevant article for a point of reference
To the OP Good luck at the track.
... I'd be willing to hear the story on Kenny Thomas...
-Dustin-
. If I had 700rwhp and was stuck in the 11s I'd focus on dyno numbers too though 
.In the LTX case besides just happy dyno's I think a lot of cars are just set up poorly. Too many people don't get the right supporting mods or are brainwashed into the "stock is good enough for 10's" mindset. They through together their 425rwhp car and then run with full stock suspension and street tires while babying their 10bolt...then end up with worst times then a bolt-on LTX with slicks, full suspension, and a 12bolt would run.
It is a shame though that so many shops put out inflated dyno numbers to make their parts/labor/tuning look better. It happens all the time with crotch rocket shops too - my bike curiously dyno'd only one single hp more after a race filter, full exhaust, and a tune then it did with just a muffler when it should have been an easy 10-15hp more
. The first dyno was very happy, to the tune of 10%(!!), and the second more reputable shop's dyno was probably right on the money. I want to say I bought my Strange in '99 but it could have been in '00. I sold it in '01 before I sold the car. The stock rear is in there now.
