How does a stall affect dyno numbers?
How does a stall affect dyno numbers? Just curious how much this would affect numbers on a dyno, an example of stall would be something like a 3600 stall or 4000 stall. How would the numbers compare to a stock stall on the dyno? Just curious.
11 Second Club
iTrader: (32)
Joined: Jan 2006
Posts: 3,701
Likes: 2
From: Southaven, MS (near Memphis, TN)
Trending Topics
11 Second Club
iTrader: (32)
Joined: Jan 2006
Posts: 3,701
Likes: 2
From: Southaven, MS (near Memphis, TN)
I always do exhaust first so the car will sound good..haha...but the stall was a great mod! My car came stock with 2.73s, so I upgraded first to 3.73s. Since your car has 3.23s I wouldn't worry about it yet.
Yank is offering free shipping on their converters this month
Yank is offering free shipping on their converters this month
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'
Brett Foote
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
^Yeah i seen that. I think im sticking with an Edge. Save some cash and they have a damn good converter/customer service. Either a 3400 or 3600 with a 2.45str Andre will be building me. I definatly want speed over sound right now so im looking at the stall first.
I wouldn't say it's useless. That's how it puts the power down when you're driving it. No one locks their converter at the drag strip (well some do at the end of the track in the last gear to get more mph). I'd rather see how it's putting down the hp differently due to the converter.
When I went from a lid only, to adding a cutout and a 3800 converter, the car dyno'd 6hp more. That was peak hp though, under the curve in some places it was as much as 40hp more! So you can see how much it helps when unlocked. If it was locked on the dyno, you'd never see the difference it makes. At the track I gained an average of .7-.9 tenths, 6hp isn't going to give you almost a full second, lol.
i had a b/b car dynoed once, we set up the engine rpms from my tach to the rollers-at 6k engine rpms, the dyno was showing a little over 5k, a lot of converter slip, didnt even make 500 rwhp
took it to the track, ripped off a 9.67, but the mph was down, i knew the converter was to loose to begin with
had we hooked the dyno tach to the engine, it would have just showed low hp #s-going off the rear wheels, i was able to see a problem, but the problem was not as bad in rear world driving as the dyno showed
when you mention chassis dyno to a converter co., you here a little silence, lol
took it to the track, ripped off a 9.67, but the mph was down, i knew the converter was to loose to begin with
had we hooked the dyno tach to the engine, it would have just showed low hp #s-going off the rear wheels, i was able to see a problem, but the problem was not as bad in rear world driving as the dyno showed
when you mention chassis dyno to a converter co., you here a little silence, lol
I think it's because they slip, it's like if you were to dyno with a slipping clutch, it won't be as much as if it weren't slipping. I'm sure if you were to dyno locked stock converter vs a locked aftermarket one, it would dyno higher.
If both a stocker and an aftermarket converter are locked, the aftermarket converter will show a little bit higher number. It has less rotating mass than the stock converter. Like Ed said, stall speed means nothing when locked.
Have you ever held an aftermarket converter? My 245mm full of fluid, still weighs less than the stock one dry. The stock one is huge and very heavy.
It's at least half the rotating mass, of course it's going to dyno higher.
Not like it really matters though, since no one races with a locked converter. Hell, even unlocked my aftermarket one dyno'd higher.
To help answer the original question better, don't worry about peak numbers. In my case, the peak numbers were higher, but look at the under the curve power, that's what matters, and you can see why a converter makes your car so much faster.
It's at least half the rotating mass, of course it's going to dyno higher.
Not like it really matters though, since no one races with a locked converter. Hell, even unlocked my aftermarket one dyno'd higher.To help answer the original question better, don't worry about peak numbers. In my case, the peak numbers were higher, but look at the under the curve power, that's what matters, and you can see why a converter makes your car so much faster.
Last edited by Muerte_X; Nov 8, 2008 at 12:19 AM.
