Stuck in the high 11s

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Old 10-30-2012, 08:38 PM
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Originally Posted by GtoSpd
No-no, not OUT of the usable power, just past a lot of usable power. I'm making peak TQ around 3200, (HP doesn't start to taper off until 6300ish) so a 4k might be a tad much is all I'm saying, being that it would place me 800 RPM over where peak TQ starts. I'm thinking what Dad posted below would be a little more optimal at 3200, maybe 3600.



Thanks Dad! I'm thinking you're right on the money suggesting a 3200 stall. I'm letting it rip as hard as it will let me and still hooking hard, so it could def stand a little more RPM on the launch. I'd love to see a low 1.6 out of it at least, and 11.3s. I may go ahead and have it restalled over the winter and find out. Thanks for the input man!

Nice ETs, btw
Thanx even though I luv my vig 3200/3600 I have been toying with the idea of trying a circle d 5c for my set-up, have heard great things about them, something else to consider. So don't be afraid to go bigger with the converter.
Old 10-30-2012, 09:06 PM
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I can tell you from recent experience, a little shot of juice fixes the 60' no problem. Nitrous loves our tight converters.
Old 10-30-2012, 09:10 PM
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Looking at a wet kit today actually. Friend of a friend had one for sale I might buy. Just trying to research the timing situation, I don't want to have to ride around on pulled timing when not spraying, so I'm currently trying to research the options.
Old 10-30-2012, 09:26 PM
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Originally Posted by speedtigger
I can tell you from recent experience, a little shot of juice fixes the 60' no problem. Nitrous loves our tight converters.
Hmmm......I've been thinking of doing that even a small shot to hit 10.90s that would be wild! What set-up are you running?
Old 10-30-2012, 09:34 PM
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Originally Posted by DadsZ28
Hmmm......I've been thinking of doing that even a small shot to hit 10.90s that would be wild! What set-up are you running?
I run a carburetor, so my situation is different. I run a NOS Cheater system with Big Shot solenoids. NOS progressive controller to soften the hit. The 10.54 was run with a 55n jet (125HP) tune pulling 6 to 8 degrees timing.
Old 10-31-2012, 07:00 PM
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Originally Posted by JonCR96Z
Saying a 4000 stall it too much for your cam is retarded. You need more stall!!

Mine was quicker with the stock cam and a Yank 4000. You are losing a lot with that stall.
^^^this

When you launch your car, the higher the rpm the better in almost every case, especially for a cammed car that can spin high. Go look at the stock internal record thread. Plenty of those cars are running stalls at or above 4k, and their motor won't spin as high as yours.
Old 10-31-2012, 07:54 PM
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Originally Posted by JonCR96Z
Saying a 4000 stall it too much for your cam is retarded. You need more stall!!

Mine was quicker with the stock cam and a Yank 4000. You are losing a lot with that stall.
Yeah, I like the small cam, big converter club myself!! Definately need more converter and more gear. My best #s were with 4.10s and MT 275/50-15 DRs but have since gone to a Moser 12 w/3.73s. That slowed the ET and MPH but DA wasn't as good either!! Will probably go to E-town this Sat. and Atco next Sat., hoping for some better air! DadsZ28 has the right combo, he's been steadily improving over the past several years!! Met him in 11/09 at Atco when I ran my 11.66, I haven't improved, but he has!!! I'd listen to him....keep us posted. See you at the track! Larry
Old 10-31-2012, 09:36 PM
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Originally Posted by JonCR96Z
Saying a 4000 stall it too much for your cam is retarded. You need more stall!!

Mine was quicker with the stock cam and a Yank 4000. You are losing a lot with that stall.
yep I concur sir! with faster with stock cam and heads and heavier weight but with a Yank 4200 useless stall


but honestly your car is running good OP
Old 10-31-2012, 09:53 PM
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Originally Posted by Cra-Z Larry
Yeah, I like the small cam, big converter club myself!! Definately need more converter and more gear. My best #s were with 4.10s and MT 275/50-15 DRs but have since gone to a Moser 12 w/3.73s. That slowed the ET and MPH but DA wasn't as good either!! Will probably go to E-town this Sat. and Atco next Sat., hoping for some better air! DadsZ28 has the right combo, he's been steadily improving over the past several years!! Met him in 11/09 at Atco when I ran my 11.66, I haven't improved, but he has!!! I'd listen to him....keep us posted. See you at the track! Larry
Thanx for the compliment! I do have alot of experience and passes on my combo over the years. I have gotten to the point where I think I have run the fastest times I can run with my current set-up. (more than happy though). I plan on being down there for the next couple of weeks I'll look for ya again. Might try more converter and some weight reduction to see if I pick up some before I change any internals.
Old 11-01-2012, 03:40 PM
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There is more to a convertor than just how high she stalls. But we are talking about FMSP and its not the best hooking track.
Old 11-01-2012, 04:51 PM
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Just curious, what do you consider a baby cam?
Old 11-01-2012, 06:29 PM
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Originally Posted by Beave
Just curious, what do you consider a baby cam?
In my case its a custom eps grind similar to the cheater cam, I kinda wish I went bigger originally but have been happy with the results. When I ordered it he spec'd it out when I was running stock exhaust manifolds.
Old 11-01-2012, 08:19 PM
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Originally Posted by JonCR96Z
Saying a 4000 stall it too much for your cam is retarded. You need more stall!!

Mine was quicker with the stock cam and a Yank 4000. You are losing a lot with that stall.
Please elaborate. If I'm at my highest RWTQ at 3300ish, how is stalling up to 4k going to improve my 60'? Serious question, not trying to sound like a know-it-all.

Would also like to know what your mods were and what you're whole slip looked like on the stock cam and 4k stall to see how that set-up compares to mine.
Old 11-01-2012, 08:57 PM
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Originally Posted by GtoSpd
Please elaborate. If I'm at my highest RWTQ at 3300ish, how is stalling up to 4k going to improve my 60'? Serious question, not trying to sound like a know-it-all.

Would also like to know what your mods were and what you're whole slip looked like on the stock cam and 4k stall to see how that set-up compares to mine.
Not to mess with your example, but I have never seen an LS engine with a torque peak that low. All of the engine dynos I have seen of even stock LS motors have a torque peak of around 5,000 rpm.
Old 11-01-2012, 09:04 PM
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Originally Posted by speedtigger
Not to mess with your example, but I have never seen an LS engine with a torque peak that low. All of the engine dynos I have seen of even stock LS motors have a torque peak of around 5,000 rpm.
It does creep up just a tad at 5,000 (maybe 5-10 rwtq), but its pretty well flat from 3300 until 5kish, then slowly falls back off.

edit..only dyno I have is when it was stock stall and no cut-out fwiw. Looking at that sheet, I am off a bit from my prior post. It does technically peak at 5k RPM, but is at 325-330 RWTQ at 3200 RPM, 340-345 RWTQ at 3500-3600 RPM, and 350ish from 4K to 4800 RPM, then peaks at 5 more RWTQ at 5k RPM, starts to drop off around 5500 RPM.

Actually...
Attached Thumbnails Stuck in the high 11s-dyno-sss.jpg  

Last edited by GtoSpd; 11-01-2012 at 09:14 PM.
Old 11-01-2012, 09:06 PM
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Originally Posted by GtoSpd
It does creep up just a tad at 5,000 (maybe 5-10 rwtq), but its pretty well flat from 3300 until 5kish, then slowly falls back off.
Also, there is more going on in a torque converter than just the stall RPM. Higher stalls also typically have higher torque multiplication and have less RPM drop during shifts. So the benefit goes beyond just getting the RPMs up for the launch.
Old 11-01-2012, 09:10 PM
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Originally Posted by GtoSpd
Please elaborate. If I'm at my highest RWTQ at 3300ish, how is stalling up to 4k going to improve my 60'? Serious question, not trying to sound like a know-it-all.

Would also like to know what your mods were and what you're whole slip looked like on the stock cam and 4k stall to see how that set-up compares to mine.
This is when I first put my stall in.

https://ls1tech.com/forums/11-second...manifolds.html
Old 11-01-2012, 09:21 PM
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Originally Posted by speedtigger
Also, there is more going on in a torque converter than just the stall RPM. Higher stalls also typically have higher torque multiplication and have less RPM drop during shifts. So the benefit goes beyond just getting the RPMs up for the launch.
That is true. Its looking like a bigger stall is what I need to look at. You guys are not the first to tell me this. My tuner is the main one telling me I have enough stall.

Originally Posted by JonCR96Z
This is when I first put my stall in.

https://ls1tech.com/forums/11-second...manifolds.html
Nice 60' man. I may go ahead and just have mine restalled. I ran 11.66 on a 1.67 60', so if I could get down to a 1.61 or even a 1.59 it should put the car into the lower 11s. Really wish a different converter would bring my trap up too.
Old 11-01-2012, 10:01 PM
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Originally Posted by GtoSpd
That is true. Its looking like a bigger stall is what I need to look at. You guys are not the first to tell me this. My tuner is the main one telling me I have enough stall.



Nice 60' man. I may go ahead and just have mine restalled. I ran 11.66 on a 1.67 60', so if I could get down to a 1.61 or even a 1.59 it should put the car into the lower 11s. Really wish a different converter would bring my trap up too.
You should have enough power to run some low 1.5 60s with a good converter. Dont know if restalling the one you have is the real answer. I've went a 1.46 with untouched 243s, TR220 cam and my PT4000.
Old 11-01-2012, 10:23 PM
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Originally Posted by JonCR96Z
You should have enough power to run some low 1.5 60s with a good converter. Dont know if restalling the one you have is the real answer. I've went a 1.46 with untouched 243s, TR220 cam and my PT4000.
Yea, IDK either. I'm not going to waste my time restalling it if theres a chance it will disappoint. I'd rather just stay put or drop the loot on a better converter.


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