Low HP numbers

[moparman95]

Any idea whats goin on here?? Ported TB, No cats, CAI, a tune from Torrie, and I can only get 367 at the wheels. WTF mate?? The tune is just a little lean on the front side, 12.8, so its not lean enough to rob me of that much power.

Its an RC, and we pulled it in 4th gear. I bought her used, what could the previous owner have done? :dontknow: Ideas??

 

[BLWNSRT]

Yup looks like mine, my rings didn't seat on all 10cyls if you have a boroscope or access to one pull the plugs and take a look for a cross hatch if you can see one your cylinder walls are glazed.

http://vtcoa.com/forums/showthread.php?t=46930

There are a few other threads I have trying to figure out my problem I would post them but I have to leave for work now.

 

[moparman95]

Yup looks like mine, my rings didn't seat on all 10cyls if you have a boroscope or access to one pull the plugs and take a look for a cross hatch if you can see one your cylinder walls are glazed.

http://vtcoa.com/forums/showthread.php?t=46930

There are a few other threads I have trying to figure out my problem I would post them but I have to leave for work now.

Awww man... I gotta boroscope, I'll check that out. That's not the news I wanted to hear man! I'll check the TPS cause I am having that high idle issue. Rings.. shit.. looks like I'm gonna get some motor honey too.

 

[JTS VENOM PERFORMANCE]

depends on the dyno more than anything, the area an so on, dont dwelve on the numbers,
also on the tb sometimes I dont get enough of the coating off the idle screw where the throttle hits, take a look at it, see if there is some color there, if so , take a small file (finger nail file works best) take off a touch of powder and the idle should correct itself

 

[rottenronnie]

Any idea whats goin on here?? Ported TB, No cats, CAI, a tune from Torrie, and I can only get 367 at the wheels. WTF mate?? The tune is just a little lean on the front side, 12.8, so its not lean enough to rob me of that much power.

Its an RC, and we pulled it in 4th gear. I bought her used, what could the previous owner have done? :dontknow: Ideas??

425 wheel is about normal on a Dynojet for a stock Gen III with a standard transmission. Under 400 for an automatic.
If it is a Mustang or a Dynodynamics like the one we use, you can expect 10-15% less than that, on average.
A 1/4 mile track is a great place to see IF the vehicle is low on power or if you just have a stingy dyno..

Some guys really get carried away with horsepower numbers and when you see a QC with "750 to the wheels" run 100 m.p.h., something is really wrong with those numbers...

Ronnie

 

[phxpoolguy]

Not the dyno, same one I use and my times are fine. Scott didn't mention it but he can't get it to run quicker than a 14.2. Thought it was the driver till we took it to the dyno,lol. For some reason it runs really rich above 4k, dips to 10 A/F on the high end. Vaccuum leaks maybe?

 

[JTS VENOM PERFORMANCE]

if thats the case then he needs an air fuel guage of some sort to get an accurate reading , give that to torrie to adjsut, but also a leak down test , an a possible oil analysis will tell him alot also

 

[moparman95]

I got the retune from Torrie, and had it re dyno'd on Sunday. A/F is back to normal, and my power curve is where it should be. Still no HP/TQ (367/440) gains.

 

[moparman95]

Not the dyno, same one I use and my times are fine. Scott didn't mention it but he can't get it to run quicker than a 14.2. Thought it was the driver till we took it to the dyno,lol. For some reason it runs really rich above 4k, dips to 10 A/F on the high end. Vaccuum leaks maybe?

I ran a 14.1 once...

 

[wesalbert]

425 wheel is about normal on a Dynojet for a stock Gen III with a standard transmission. Ronnie

Guess the B&B exhaust, JMB intake and Xmetal TB was good for that 1hp gain I got

 

[BLWNSRT]

Take a look into the glazed rings and do a leakdown I went through this all last year. When mine was dynoed at rottenronnies I only put down I think around 475-485 with the blower, headers, catless @ 7#s

and my best was 507 local ( on a dynojet with 5# running a 11.7af wot, with manifolds and cats) 6months before ronnies run.

 

[ViperPete]

I made 417 hp and 422 tq on a stock quad cab on torries dyno in jax.

With 65k on the odo.

I think its a factory freak.

 

[phxpoolguy]

I ran a 14.1 once...

And you beat the lightning twice even when he ran a 13.8. Good race between you two, but your truck should be quicker than a 14.1.

 

[moparman95]

Question... On the dyno pulls, the 6 speeds pull in 4th gear, NOT 3rd, right??

 

[moparman95]

And you beat the lightning twice even when he ran a 13.8. Good race between you two, but your truck should be quicker than a 14.1.

Lightnings can't take me out. :rock: RIP SVT

 

[WA 2 FST]

Question... On the dyno pulls, the 6 speeds pull in 4th gear, NOT 3rd, right??

Yes, you should always pull in the direct drive (1:1 ratio) gear... 4th for sticks, and 3rd for autos.

 

[bigredv10]

Makes me wanna try a second gear pull....place your bets

 

[VENOMOUS1 RACING]

I made 417 hp and 422 tq on a stock quad cab on torries dyno in jax.

With 65k on the odo.

I think its a factory freak.

NOT a factory freak, but more like average again dependant on the dyno. I put down 423/425 stock in my QC. After complete exhaust minus headers, TB, coil packs, wires, and tune I am currently at 428/480. My HP didn't budge much but the Torque sure did and TORQUE is what gets a 5600lb beast moving off the line!

 

[Sammy11]

Yes, you should always pull in the direct drive (1:1 ratio) gear... 4th for sticks, and 3rd for autos.

how can u pull in 3th with our automatic transmission...?
not a stupid question i hope...LOL
but my auto have gear 1 , gear 2 and then D , with the tow button on , it goes to 4th gear , right ?

 

[B_Thompson]

With the tow/haul button on it should lock out the torque converter leaving it into 3rd. If you put it in D the it goes through all 4 gears.