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    Thread: First car event of the year, LS1 dyno

    1. Member landstuhltaylor's Avatar
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      05-24-2020 08:09 PM #1
      Didn't make what I wanted but I think it's due to being a dumbass and still running the original ignition. Torque peak is about 500rpm sooner than it should be and that HP number should be the same or slightly more than TQ. Anyway, not bad for a 165k mile stock longblock LS1 spinning to 6800. Guess I need to feed it some better coils and finish that E85 conversion. But still, it was good to do something at least approaching normal.



      Last edited by landstuhltaylor; 05-24-2020 at 08:51 PM.

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      05-24-2020 08:55 PM #2
      Quote Originally Posted by landstuhltaylor View Post
      Didn't make what I wanted but I think it's due to being a dumbass and still running the original ignition. Torque peak is about 500rpm sooner than it should be and that HP number should be the same or slightly more than TQ. Anyway, not bad for a 165k mile stock longblock LS1 spinning to 6800. Guess I need to feed it some better coils and finish that E85 conversion. But still, it was good to do something at least approaching normal.



      Looks pretty darn good to me for that many miles...sure has a nice flat torque curve.

    4. Member landstuhltaylor's Avatar
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      05-24-2020 08:59 PM #3
      Quote Originally Posted by Dirtmvr View Post
      Looks pretty darn good to me for that many miles...sure has a nice flat torque curve.
      It's not bad for sure. This combo of parts should be knocking on the 400-410whp door. But it was burning oil pretty bad last season so I'm suspect of how healthy this thing really is at this point. The only other data point I have is 337whp/341 torque (on a Mustang dyno) with a stock motor aside from LS6 intake and headers. But it was also dealing with a separate ignition issue then too, namely old and fouled plugs. So who knows really.

      But I'm definitely pleased with that 320wtq right off 2000rpm
      Last edited by landstuhltaylor; 05-24-2020 at 09:02 PM.

    5. Planters (fasciitis) peanuts. Dang dogg Sold Over Sticker's Avatar
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      05-25-2020 12:41 AM #4
      That's not bad at all. Here's my 72k mile LS3, with stock everything including air filter, but a mild cam.


      Picked up 50whp over stock. Not bad.
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    6. Member landstuhltaylor's Avatar
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      05-25-2020 01:51 AM #5
      Quote Originally Posted by Sold Over Sticker View Post
      That's not bad at all. Here's my 72k mile LS3, with stock everything including air filter, but a mild cam.


      Picked up 50whp over stock. Not bad.
      That's where I was hoping to be. This motor should make 400/400 but I think it's finally just getting tired.

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      05-25-2020 10:00 AM #6
      Quote Originally Posted by landstuhltaylor View Post
      Maybe it's just me getting older, but terrible graphs bother me at this point in my life. Why would they give you a dyno chart with the scale going from -150 to 740 on the Y axis when 100 to 400 would have doing great? That's a terrible graph and it takes away from what you can learn from it.

      That being said, always in for some dyno action.

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      05-25-2020 10:19 AM #7
      sound right on par with my 125k mile LS1 with only longtube headers and full exhaust with cats. 343hp/360tq. mine desperately needs a tune to make use of the exhaust. it runs a bit rich

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      05-25-2020 11:04 AM #8
      My I/H/E C5 made 350/360 at 110K.

      The LS1 is a beast.
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      05-25-2020 12:16 PM #9
      When you're in a limited HP class, it's all about flattening the curve.

    11. Member landstuhltaylor's Avatar
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      05-25-2020 12:16 PM #10
      Quote Originally Posted by Stromaluski View Post
      Maybe it's just me getting older, but terrible graphs bother me at this point in my life. Why would they give you a dyno chart with the scale going from -150 to 740 on the Y axis when 100 to 400 would have doing great? That's a terrible graph and it takes away from what you can learn from it.

      That being said, always in for some dyno action.
      I don't see the issue with it, I got what I needed to from it. They also gave me the table output in 100rpm increment on another sheet.

      Quote Originally Posted by Senior Member View Post
      When you're in a limited HP class, it's all about flattening the curve.
      Wasn't a limited HP class before, definitely isn't now. But back when it was still SP you basically couldn't touch any internal engine parts other than some oiling upgrades and optimizing within factory tolerances.

    12. Member landstuhltaylor's Avatar
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      05-25-2020 12:23 PM #11
      Quote Originally Posted by freedo84gti View Post
      sound right on par with my 125k mile LS1 with only longtube headers and full exhaust with cats. 343hp/360tq. mine desperately needs a tune to make use of the exhaust. it runs a bit rich

      You know you can rev that thing over 5500 right?


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      05-25-2020 12:42 PM #12
      Quote Originally Posted by landstuhltaylor View Post
      You know you can rev that thing over 5500 right?

      i honestly dont remember what he revved it too. i got find the graph to see.
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