1st dyno...

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Oct 18, 2009 | 11:34 PM

Quasar94Z28

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Staging Lane

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From: Madison WI

1st dyno...

So I dynoed my car for the 1st time and I have a question...but here's the results.

251 whp
342 wtq

why is my torque so high comparied to the hp? All I have is a CAI, catback and PCMforless tune btw...I'll post the sheet once I get it scanned. Thanks for any help.

Oct 18, 2009 | 11:36 PM

LT1

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Auto's always give low numbers on dyno's, but your right where you should be. Numbers look good! if you get long tubes it will get closer to 300hp

Oct 19, 2009 | 12:11 AM

StealthFormula

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From: Skippack, PA

My dyno operators have always told me that Automatics never show accurate torque numbers and in my experience that is very true.

Oct 19, 2009 | 12:43 PM

Quasar94Z28

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Staging Lane

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From: Madison WI

stealth What does your formula put down to run an impressive 11.8?

Oct 19, 2009 | 02:42 PM

StealthFormula

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From: Skippack, PA

Quote:

Originally Posted by Quasar94Z28

stealth What does your formula put down to run an impressive 11.8?

At the time of that run I put down ~359rwhp/370rwtq with the stall unlocked. I later put it on another dyno where it did 352/370 before further tuning and 362/390 after some changes all with the stall unlocked. As you can see the torque seems a tad high sort of proving my point. With the stall locked ~383rwhp. Dyno numbers with autos are so complex!

Oct 19, 2009 | 08:20 PM

Quasar94Z28

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Staging Lane

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From: Madison WI

Nice man. What do you mean by "stall unlocked?" I am getting the LE2 package this winter with the Yank SS 3600 stall so I just wanna learn learn learn!

Oct 20, 2009 | 07:03 AM

86formula

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you can see low 11s with that setup

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Oct 20, 2009 | 11:08 AM

StealthFormula

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From: Skippack, PA

Quote:

Originally Posted by Quasar94Z28

Nice man. What do you mean by "stall unlocked?" I am getting the LE2 package this winter with the Yank SS 3600 stall so I just wanna learn learn learn!

For example if your crusing down the street at 25mph your stall will be unlocked. The rpm's will be high and if you mash the gas it will move out. The stall will remain unlocked until the car shifts into 4th at say 43mph or so. Once it shifts into 4th it just cruises like 100% stock and when locked it is more effiecient (more power and mpg's.) On the dyno the car will make the runs unlocked because you run the an auto in 3rd gear. Remember 1st-3rd gear the stall is unlocked. Now, if the tuner can lock the torque converter on the dyno then you will see much higher numbers to the tune of 15-20rwhp.

Kinda hard to understand until you drive a stalled auto but in essence the converter is unlocked when driving until it "locks up" when it goes into 4th gear.

I use to run an SS3600 with my LE2 setup and I think you would like it alot. Very tight converter that is alot of fun on the street.

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Oct 20, 2009 | 07:39 PM

Quasar94Z28

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Staging Lane

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From: Madison WI

i guess its something I have to see and experience...thanks for the info man

Oct 20, 2009 | 08:29 PM

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jays97 t/a

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hey stealth what kinda gas mileage are you getting..its seems like im putting 10 to 15 bucks just driving like 30 or 40 miles and im not getting on it all the time but most of it is in town

Oct 20, 2009 | 08:33 PM

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StealthFormula

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From: Skippack, PA

Quote:

Originally Posted by jays97 t/a

hey stealth what kinda gas mileage are you getting..its seems like im putting 10 to 15 bucks just driving like 30 or 40 miles and im not getting on it all the time but most of it is in town

Around town I get about 11-12 on average. I am by no means easy on it but if I go on a long cruise I get 15-16. I would imagine it would get close to 18-20 on highway I just am never able to cruise around with the stall locked because my car doesn't shift into 4th until 53mph.

Oct 20, 2009 | 11:40 PM

#12

Quasar94Z28

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Staging Lane

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From: Madison WI

can you feel it lock?

Oct 20, 2009 | 11:47 PM

#13

StealthFormula

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From: Skippack, PA

Quote:

Originally Posted by Quasar94Z28

can you feel it lock?

Yes, you feel the car go into 4th like you normally would but rpm's drop significantly (because rpm's are high with a large stalls when unlocked) and it just starts cruising like it's 100% stock.

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