N/A & N20 runs
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From: Howell & Fenton MI
N/A & N20 runs Well I finally got to strap my car down to a good Dynojet dyno for a n/a and n20 run. This is the same dyno that I made 405 rwhp on a year ago before my LS1 blew up. Essentially I wanted a back to back fair comparison from my old setup to the new one. Okay so here's the deal...When I had the new motor put in and tuned it made 420 rwhp n/a, and 490 rwhp on the 100 shot on Mustang dyno that's know to be very stingy. So today I made 410 rwhp n/a and 515 rwhp on the 100 shot. So basically I gained 5 rwhp from new setup from a stingy Mustang dyno to a very normal reading Dynojet lol. I thought maybe it was the dyno at first but other cars were making the numbers that they should be, so that wasn't it. Now here's the thing....the new setup is a lot faster than the old LS1 setup. So much so that it's almost a dead even race with my buddy's ported/pullied 03 Cobra that has about 150-200 lbs weight reduction as well....and that's me running n/a btw just so you know. Those of you who've seen the video know what i'm talking about. His car is right around the 500 rwhp mark. None of this makes any damn sense lol. Oh and I gained 105 rwhp on the 100 shot this time vs the 70 rwhp before lol. Can anyone figure out WTF is going on here lol? Mods are in sig for those of you that don't know what i have done.
BTW, for any of you that think it could be the dyno itself...it's definitely not. A bone stock LS3 made 375 rwhp, and a new 5.0 Mustang made 365 rwhp, and several other cars made the typical numbers that you would normally see on a Dynojet
I am totally baffled by this whole thing lol
BTW, for any of you that think it could be the dyno itself...it's definitely not. A bone stock LS3 made 375 rwhp, and a new 5.0 Mustang made 365 rwhp, and several other cars made the typical numbers that you would normally see on a Dynojet
I am totally baffled by this whole thing lol
So mustang dyno numbers were higher????
Perfect proof that they are the easiest to manipulate and most likely to show incomparable and inconsistent results like a few of us have said 100 times before.
Perfect proof that they are the easiest to manipulate and most likely to show incomparable and inconsistent results like a few of us have said 100 times before.
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From: Howell & Fenton MI
Yes exactly, but there is no way i'm only making 410 rwhp with this setup, and running with a 500 rwhp Cobra that's actually a tad lighter than me lol. Something just doesn't add up here...especially when other cars are making normal numbers
Fwiw, when I was cam only on 91 I made 383 and got slightly pulled by my buddies cobra that made 479, I am about 200 lighter and at the time I trapped 112 and him 114, but another cobra same weight that did 520ish was trapping 125 who walked me bad, cobras and dynos are wierd haha, they are either dyno queens or PERFORM
Last edited by NW Iowa WS6; May 10, 2014 at 11:39 PM.
Only thing I see with your mods is maybe in the tune, have you considered a different tuner or tried a speed density tune? From what I've experienced and seen it works pretty well and throttle response is awesome
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I actually thought it might be in the tune as well, but the car runs awesome actually...that's what I don't get here lol. A/F was 12.8 n/a, and 11.8 n20, and has really good drivability for having such a large cam. I mean if it was something in my tune I would imagine I would have noticed something that didn't feel right, and certainly wouldn't be running with a ported/pullied Cobra lol. No track times just yet, but there will be very soon...after this little fiasco you can count on that since i'm VERY curious now what it will actually run.
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dyno numbers are just that... numbers... i made 500 rwhp on a dynojet, where other people that have the same mods i do made 40 more... but then i found out its a dynojet that does the load simulation thing like a mustang dyno so now i dont know what to think... plus before i put down 500 when the moter only had 10 miles on it, was running high flow cats, and had 75% of the cai fender intake port blocked off. got rid of the cats, fixed the inake restriction,2500 miles later i went back to check and see if i could gain more... car would not do more than 500 no matter what he tried lol... but it feels strong and that's all i really care about... oh well i did gain 1 torque lol
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From: Howell & Fenton MI
dyno numbers are just that... numbers... i made 500 rwhp on a dynojet, where other people that have the same mods i do made 40 more... but then i found out its a dynojet that does the load simulation thing like a mustang dyno so now i dont know what to think... plus before i put down 500 when the moter only had 10 miles on it, was running high flow cats, and had 75% of the cai fender intake port blocked off. got rid of the cats, fixed the inake restriction,2500 miles later i went back to check and see if i could gain more... car would not do more than 500 no matter what he tried lol... but it feels strong and that's all i really care about... oh well i did gain 1 torque lol
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yeh that is strange in your case... i'm not surprised at all that you can run with that cobra na though... i was a very small bit faster than this 1 guy's pullied gt500 that made a little over 500 when i olny made 431/386... i didnt know what to say after he showed me his dyno sheet
Try another dyno? Haha I know you know numbers don't matter but like you its something that would bother me. My previous car was the same way, on the same dyno as my current cars numbers I had a full Bolton ws6 that did 328, then after a 224 cam 342, then I thought tuning is gonna really wake this thing up but Nope, 356 is all I got out of it and sold it a year later, there was no way I was gonna do anymore to that car so I gave up and did the diesel truck thing for a couple years before buying my SS, i never tried that car on a another dyno but I always wondered, hmmmm? Because it ran hard and beat cars that it "shouldn't have" on paper
Last edited by NW Iowa WS6; May 11, 2014 at 09:43 PM.
Your #'s do seem on the low side for the CI, compression, and mods, I would have guessed in the 450 range N/A.
Would the 4.10 gears have any thing to do with the dyno reading different than say the stock 3.42's ???
Would the 4.10 gears have any thing to do with the dyno reading different than say the stock 3.42's ???
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From: Howell & Fenton MI
That's not so encouraging lol, but it is absolutely right unfortunately! A bunch are going to the track in a few weeks, So I'll Know soon. The Cobra I mentioned earlier runs around 11.5 @ 120 or so, and like I said we are a very close race, so I'm hoping to be in that range
Only other thing I thought of is are you sure you got flat top pistons? Haha, sure they didn't put a big dish? It's just crazy this thing isn't at least 450 with the mods in sig on a jet known to be pretty average numbers wise
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Yes they are right pistons for sure lol
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you have to go run it at the track, only way to get a true sense of what kind of power the setup is making. Fwiw, i have dynoed my car on a mustang dyno 405whp and a dynojet 391whp and my car trapped 125 at 3500+lbs...obviously it makes more than the dyno would suggest....Just go run it!
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From: Howell & Fenton MI
Bozzhawg, the cam is 612/612 lift, 236/244 duration, 113+4 LSA. My buddy who owns the ported Cobra is just as good of a driver as me I can assure you
Beave, your story gives me hope lol
I will be going to the track in a few weeks here as well
BTW, here is that race with the Cobra I was telling you about. As you can see it's a clean race, and we both do okay on the shifting
Beave, your story gives me hope lol
I will be going to the track in a few weeks here as wellBTW, here is that race with the Cobra I was telling you about. As you can see it's a clean race, and we both do okay on the shifting