Mustang to dynojet conversion???
Mustang to dynojet conversion??? Is it realistic to think of a 9% difference? I did mine on a Mustang dyno and would like to get a comparison number to other setups.
I may just take it to a dynojet but the one I knew of in town closed down, so I'll have to find one.
Bobby
I may just take it to a dynojet but the one I knew of in town closed down, so I'll have to find one.
Bobby
We'll as much as I'd like 15%, I'd like to be realistic about it 
7% would put me at 557rwhp and 521rwtq, while this is more than enough for my needs it does seem on the low end for my setup.
7% would put me at 557rwhp and 521rwtq, while this is more than enough for my needs it does seem on the low end for my setup.
252/256 .595”/.595” 112LSA +2 advance
Comp Cams XE/XE Hi-Lift lobes
3660R/3662R HR112LSA +2 advance (110 installed intake centerline)
So fairly small, actually the MAF is maxing out at about 5k so there is more there sure but I don't know how much. 10rwhp really isn't worth worrying about at this point. Car has to pass noise emissions so the cats are going to have to stay
I might do a cut out after the cats though might help a little bit.
Comp Cams XE/XE Hi-Lift lobes
3660R/3662R HR112LSA +2 advance (110 installed intake centerline)
So fairly small, actually the MAF is maxing out at about 5k so there is more there sure but I don't know how much. 10rwhp really isn't worth worrying about at this point. Car has to pass noise emissions so the cats are going to have to stay
I might do a cut out after the cats though might help a little bit. thats really small, plenty people running those in 408's, sounds like you need a bigger cam.
And a 454 with that setup will pass noise restrictions but if you take off the cats it wont?
And a 454 with that setup will pass noise restrictions but if you take off the cats it wont?
Right now I'd say its borderline. I'll find out Wedsday when it goes through inspection. the cats do quiet the car down quite a bit. I've done the loud exhaust bit, LG's with flowmaster 1 chambers on my Z06 and I'm looking for something a little more understated 
With the dual dual and cats it isn't ridiculously loud but we'll see if it passes emissions..
With the dual dual and cats it isn't ridiculously loud but we'll see if it passes emissions..
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Aren't you the one who told me Toms dyno was the same as a dynojet because you knew someone who compared them?
Sorry for your numbers dude, you only made 52hp more with the 454 than the 388? Thats the way you should be looking at it, not because it's a mustang dyno.
You had a 388 that put down 473 on that same dyno and now you've got a 454 that put down 521 on that same dyno with an ls6 intake on the 388 right ?
z06 MAF is only like $125 from ebay is you think thats the restriction. I know you've got those tea ls6 heads right?. Maybe you need some 243's? Did you see what sidewaysz28 put down for numbers at Toms? With stock 243 heads he put down 431 on that dyno!! But he has the stock rear and gears. Lets see what he does with a 9"
I'd like to see a thread with people numbers with 9" rears and similar combos.
252/256 is not a small cam, heck even Vengeance put down 520hp with a 346 and their 244 cam and Patrick G spec'ed yours for you so that cant be the issue.
Sorry for your numbers dude, you only made 52hp more with the 454 than the 388? Thats the way you should be looking at it, not because it's a mustang dyno.
You had a 388 that put down 473 on that same dyno and now you've got a 454 that put down 521 on that same dyno with an ls6 intake on the 388 right ?
z06 MAF is only like $125 from ebay is you think thats the restriction. I know you've got those tea ls6 heads right?. Maybe you need some 243's? Did you see what sidewaysz28 put down for numbers at Toms? With stock 243 heads he put down 431 on that dyno!! But he has the stock rear and gears. Lets see what he does with a 9"
I'd like to see a thread with people numbers with 9" rears and similar combos.
252/256 is not a small cam, heck even Vengeance put down 520hp with a 346 and their 244 cam and Patrick G spec'ed yours for you so that cant be the issue.
Last edited by 99blancoSS; Oct 22, 2007 at 08:03 PM.
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Verdad Gallardo Chris its not just about peak numbers, if you compare the HP and TQ of the old setup there is no comparison. I'm not necessarily disappointed. I don't know what you are sorry about I'm fine. It maybe "only" 52HP but this setup would destroy the old setup, it would not be a contest.
I'm not the one who told you I had first hand knowledge of Tom's was the same as a dynojet although I have heard that as well and may have passed it on.
I have an 85mm z06 MAF, I have the new fast toys lid. After the MAF there is a serious restriction as it has a stock bellows into the NW 90mm. Tom indicated that could be 10hp there, I bought a Fernco tonight but haven't had a chance to install it. But there is a problem before the MAF as well, at 4800 the MAF is maxed and the manifold pressure goes down.
BTW 243's are LS6 heads I have 317 heads. Yeah the heads are a restriction for the motor and so is the ported fast manifold for that matter. But really the car is a beast it has over 450rwtq at like 2700 rpms and doesn't go under that until like 5500, the 388 didn't do that. On the street it is night and day and the car has better manners then it used to.
I cannot get traction in 1st to 3rd with 315 drag radials at this point and in 4th it gets go to jail illegal in a hurry. I'm going to enjoy the car, I like it You should do the same with yours you have a nice setup! Stop dreaming the Procharger dream for at least a few months 
I'm not the one who told you I had first hand knowledge of Tom's was the same as a dynojet although I have heard that as well and may have passed it on.
I have an 85mm z06 MAF, I have the new fast toys lid. After the MAF there is a serious restriction as it has a stock bellows into the NW 90mm. Tom indicated that could be 10hp there, I bought a Fernco tonight but haven't had a chance to install it. But there is a problem before the MAF as well, at 4800 the MAF is maxed and the manifold pressure goes down.
BTW 243's are LS6 heads I have 317 heads. Yeah the heads are a restriction for the motor and so is the ported fast manifold for that matter. But really the car is a beast it has over 450rwtq at like 2700 rpms and doesn't go under that until like 5500, the 388 didn't do that. On the street it is night and day and the car has better manners then it used to.
I cannot get traction in 1st to 3rd with 315 drag radials at this point and in 4th it gets go to jail illegal in a hurry. I'm going to enjoy the car, I like it
You should do the same with yours you have a nice setup! Stop dreaming the Procharger dream for at least a few months Never saw a graph of the old setup, thats cool as long as your happy thats all that matters. LPE has that 4" MAF but at $300 it's a bit spendy. The torque must be nice. You just cant compare when it's cubic inches, there really is no substitute. I'm heading to Toms tomorrow to re-tune. Take some timing out and lean it out a little. Mamo thinks its to rich still for his liking. He say 13.2-5 is fine so we'll see.
I'm going to build the fuel system first for the s/c. Spoke with Bob at EPP and I know what I need to do as far as that goes, well the parts I need anyway. You know how the power thing is, just cant ever get enough!!
Car is fast no doubt and performs like how I wanted (well mannered til about 3000 rpms then explodes) but I like the idea of just smoking the tires when ever I feel like it. I've got 4050 lbs as well so I need the procharger. I need to start a feed the hungry fund for all to donate to... hungry is my car. That lsx 454 wasnt out when I built or I'd have one. Well I guess thats not totally true, I could have gone 408 or 402 but didnt want the extra costs...LMAO!
or you know how much I like rpms.. solid roller is my next build.. what ever the displacement
I'm going to build the fuel system first for the s/c. Spoke with Bob at EPP and I know what I need to do as far as that goes, well the parts I need anyway. You know how the power thing is, just cant ever get enough!!
Car is fast no doubt and performs like how I wanted (well mannered til about 3000 rpms then explodes) but I like the idea of just smoking the tires when ever I feel like it. I've got 4050 lbs as well so I need the procharger. I need to start a feed the hungry fund for all to donate to... hungry is my car. That lsx 454 wasnt out when I built or I'd have one. Well I guess thats not totally true, I could have gone 408 or 402 but didnt want the extra costs...LMAO!
or you know how much I like rpms.. solid roller is my next build.. what ever the displacement
252/256 .595”/.595” 112LSA +2 advance
Comp Cams XE/XE Hi-Lift lobes
3660R/3662R HR112LSA +2 advance (110 installed intake centerline)
So fairly small, actually the MAF is maxing out at about 5k so there is more there sure but I don't know how much. 10rwhp really isn't worth worrying about at this point. Car has to pass noise emissions so the cats are going to have to stay I might do a cut out after the cats though might help a little bit.
Comp Cams XE/XE Hi-Lift lobes
3660R/3662R HR112LSA +2 advance (110 installed intake centerline)
So fairly small, actually the MAF is maxing out at about 5k so there is more there sure but I don't know how much. 10rwhp really isn't worth worrying about at this point. Car has to pass noise emissions so the cats are going to have to stay
I might do a cut out after the cats though might help a little bit.
Ditch the MAF, Speed Density tune that bitch, add a cutout before the cats, and you're over 560rwhp on that same Mustang dyno. I'll put money on it. Mike
my .02
With that mild cam and running a composite intake through a MAF and cats, you are making great numbers. If you went SD, put on a ported carb style intake and dropped the cats you would gain at least 5% IMO. Probably more. As for comparing Mustang to Dynojet, you realy can't determine an accurate number. Typically anywhere from 7-12%. I have seen no difference from one to the other in a few Vettes. Seams the closer you are to 3000lbs and less drag coeficient, the smaller the difference. So Vettes would be closer to 0-5% and F-bodies in the 7-12% depending on the dyno. I would just use 7% to be conservative. Although the ultamate dyno is the track. See what she traps.
Thats an interesting observation on the vettes, Wong works with probably 90/10 Vettes to fbodies, which is why the difference would be minimal.
I'm not disappointed in the power really or even the gains over the old setup ( I think that old setup overachieved) I would just like a number to compare to other 454's out there. I'll just go to dynojet hopefully this weekend and see what it does and post the results
I'm not disappointed in the power really or even the gains over the old setup ( I think that old setup overachieved) I would just like a number to compare to other 454's out there. I'll just go to dynojet hopefully this weekend and see what it does and post the results
My pass on the local MD mustang dyno showed a 20+% loss on drivetrain and maybe a bit more...A lot of plp have been disapointed a lot with this dyno, but not me 
BUT, every dyno can be different, from what i've heard. Some are the same as dynojet.
BUT, every dyno can be different, from what i've heard. Some are the same as dynojet.
I would not care if mine said 100hp on an MD. As long as it is loaded properly to be tuned and traps where it should. My car only read 388/373 on a MD, but my 3600+lb car traps 119+ in 1000+DA.