Took my 04 to the dyno yesterday

[16MustangVet]

Why would you compare a car that is running on E85 to a car that is running 89 octane fuel?

I don't think you are understanding what actually increases torque on these motors.

Last I checked E85 IS pump gas................

As for me not understanding what makes torque well we all know throwing in a xpz cam and leaving everything else stock besides the self ported heads doesn't increase tq very much either.........

[GTPpower]

Last I checked E85 IS pump gas................

As for me not understanding what makes torque well we all know throwing in a xpz cam and leaving everything else stock besides the self ported heads doesn't increase tq very much either.........

I never said it wasn't. I was asking why you wanted to compare a car that is running E85 to one that is running 89 octane. ?

So, in your opinion, what would increase torque?

[16MustangVet]

I never said it wasn't. I was asking why you wanted to compare a car that is running E85 to one that is running 89 octane. ?

So, in your opinion, what would increase torque?

E85 is cheaper than 89

And I'd like to see your car vs a 3.4 header E85 car my guess is it wouldnt be pretty..........

[GTPpower]

E85 is cheaper than 89

And I'd like to see your car vs a 3.4 header E85 car my guess is it wouldnt be pretty..........

No, it's not cheaper to run. E85 winds up being more expensive.



Since we're comparing things that have nothing in common, I'd also like to say that a H/C spray LS1 camaro would walk me from a 50 roll as well.

[Neil98gt]

No, it's not cheaper to run. E85 winds up being more expensive.



Since we're comparing things that have nothing in common, I'd also like to say that a H/C spray LS1 camaro would walk me from a 50 roll as well.

But with headers you'd be able to walk that camaro, right?

[blueguy]

What DR did you run?

Ran a rollmaster. Had the gear chamfered...machined to sit at stock height, blahblah. You know the drill. Idle was set at 625~ with the Thrasher cam...lollll.

There is a gain going with 150# springs over 130's on the XPZ...I'm probably no seeing it at this level though.

Right...I thought 130's were a tougher spring anyways...or at least harder on the chain. Can't recall.

I'm not real comfortable using 130's on a stock chain. I'm doing it on my 01, but it's not something I'd feel comfortable running for 50k miles without looking at it. I have about 10k miles on the chain in my 01, so we'll see what it looks like when I pull it out in the winter.

I ran LS6's on my XP for about 40k~ and the stock dampner was ate to pieces. Chain was still fine though. Reptile and Trannyman Dave @ TEP ran 130's on a Overkill BBC Custom grind cam for well over 20k. They were fine...guessing higher idle speeds for sure...I think reppy's was around 900~. I'm not saying the aftermarket chains are bad, I just haven't heard of any stock chain failures when used correctly...but then again, I've heard good things from the aftermarket chains working as well. Just hit and miss I suppose?

No, it's not cheaper to run. E85 winds up being more expensive.

This.

And actually...around here...E85 isn't much cheaper than 87/89 in most places.

You gotta roll out to BFE to get it cheap. Which then, isn't very cost effective.

[GTPpower]

Ran a rollmaster. Had the gear chamfered...machined to sit at stock height, blahblah. You know the drill. Idle was set at 625~ with the Thrasher cam...lollll.

That's what I did on this car as well. It's at stock idle now...which reminds me. I had intended to raise it about 100rpms.
Maybe the gear you got had some defect to it, that it caused problems.

I ran LS6's on my XP for about 40k~ and the stock dampner was ate to pieces. Chain was still fine though. Reptile and Trannyman Dave @ TEP ran 130's on a Overkill BBC Custom grind cam for well over 20k. They were fine...guessing higher idle speeds for sure...I think reppy's was around 900~. I'm not saying the aftermarket chains are bad, I just haven't heard of any stock chain failures when used correctly...but then again, I've heard good things from the aftermarket chains working as well. Just hit and miss I suppose?

I ran LS6's on my 01 for about 10k miles as well, before swapping over to 130's. So, there's about 20k on the chain and dampner total...maybe just a little more. It'll be interesting to see how it looks when I pull it apart. I have idle on there turned up maybe 100rpms as well, iirc. There are a few different dampners that are available for these motors, and I don't have too much research done on them, but it looks like some are better than others. Actual GM dampners may possibly be better. Just about every Cloyes dampner in a motor that I pull apart is broken.

[blueguy]

That's what I did on this car as well. It's at stock idle now...which reminds me. I had intended to raise it about 100rpms. Maybe the gear you got had some defect to it, that it caused problems.

Could be...who knows...when I get home, I'll post the PB vids I've got of it when the front cover got ripped off to look at the clattering noise.

I ran LS6's on my 01 for about 10k miles as well, before swapping over to 130's. So, there's about 20k on the chain and dampner total...maybe just a little more. It'll be interesting to see how it looks when I pull it apart. I have idle on there turned up maybe 100rpms as well, iirc.

Yeah, I was running Manley 130's with Ti Retainers...had O/R pushrods with stock rockers. I know the Thrasher is slightly larger lift wise than the XPZ...you got a cam card for it by chance?

There are a few different dampners that are available for these motors, and I don't have too much research done on them, but it looks like some are better than others. Actual GM dampners may possibly be better. Just about every Cloyes dampner in a motor that I pull apart is broken.

Not sure on the Cloyes ones...

I ran an actual GM one...tossed it in there with the stock timing chain at the time of the XP install. Someone needs to machine a billet dampner, maybe that would help? I also didn't know there were "other options", unless you were just meaning different brands/producers?