Date with a dyno (first time ever)
Thread Starter
On The Tree
Joined: Sep 2007
Posts: 177
Likes: 0
From: San Antonio, TX
Well I just got back from the dyno and I am quite pleased. The car made 277rwhp and 297 rwtq. Everyone at the shop was pretty impressed considering how few mods I have done to the car.
Just wanted to let everyone know what the actual outcome was.
Just wanted to let everyone know what the actual outcome was.
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Being is he possibly had hardened pushrods and 1.6 roller rockers. And sounds like some exhaust work. I say thats a decent number. unfortunately we dont know if it was set to sae or uncorrected or corrected
Thread Starter
On The Tree
Joined: Sep 2007
Posts: 177
Likes: 0
From: San Antonio, TX
It was set at STD not SAE. So assuming that you pull ~2-3% for the difference between STD and SAE I should still be around 268-272 rwhp.
I was intending to buy headers, but I had to have my head gaskets replaced this week (stupid #2 plug). So maybe this raised my compression ever so slightly and gave me a couple more on top of the rocker arms and cat-back. The gasket was supposed to be around the same compressed thickness as the stock one, but can't verify if it was exactly the same... could have been a little thinner.
I also changed the plugs and wires from the stock setup to low resistance Taylors and NGK TR55s, I don't know if that makes a difference or not.
Maybe my car is on the strong side of the LT1 range from the factory speaking. I dunno, but I was surprised by the results of the dyno though.
Don't forget the almighty airfoil....j/k.
I was intending to buy headers, but I had to have my head gaskets replaced this week (stupid #2 plug). So maybe this raised my compression ever so slightly and gave me a couple more on top of the rocker arms and cat-back. The gasket was supposed to be around the same compressed thickness as the stock one, but can't verify if it was exactly the same... could have been a little thinner.
I also changed the plugs and wires from the stock setup to low resistance Taylors and NGK TR55s, I don't know if that makes a difference or not.
Maybe my car is on the strong side of the LT1 range from the factory speaking. I dunno, but I was surprised by the results of the dyno though.
Don't forget the almighty airfoil....j/k.
its a bigger difference then that from STD to SAE, for examply, a buddy dyno'd 348STD, SAE correction makes it 333, it's about 4.5% which puts you around 265ish, which is still dam respectable. Then you have the dynojet factor which they always read higher. But again a dyno is only a tool, don't ever get worked up on the numbers, its nice to have a baseline to see your improvements but the track and street is truly the measure of the cars power since every dyno is different
Thread Starter
On The Tree
Joined: Sep 2007
Posts: 177
Likes: 0
From: San Antonio, TX
Probably at some point but lot of other things going on right now before I will get around to doing though. Before I do that, I would like to have some more things done on my car. At least headers and a tune. Who knows when I will get around to getting that stuff done.
Overall though I am very pleased with the numbers I got. My biggest concern was that the car was going to be grossly off par (eg <230 rwhp range). If that had happened I would have reconsidered whether it was worth modding or should I try to find a better running firebird. It makes me feel a lot better since the numbers are what they are as I haven't driven any other LT1s to have a SOTP comparison.
Overall though I am very pleased with the numbers I got. My biggest concern was that the car was going to be grossly off par (eg <230 rwhp range). If that had happened I would have reconsidered whether it was worth modding or should I try to find a better running firebird. It makes me feel a lot better since the numbers are what they are as I haven't driven any other LT1s to have a SOTP comparison.
