Critique the hell out of my setup...
Thread Starter
Joined: Jun 2004
Posts: 5,125
Likes: 4
From: Alexandria, VA
Critique the hell out of my setup... The last numbers I have from a mustang dyno are 475/445 on the following setup:
HPE 408 w/ -2cc pistons (~11.6:1 SCR, ~8.1:1 DCR, I believe, can't remember exactly though, I could be wrong)
244/248 .635/.627 112 from Futral
Ported 317's flowing 322/220 (without a pipe on the exhaust)
LS6 intake/ported TB
Edelbrock 1 7/8 stepped LT's w/ dynatech catted ORY
Loudmouth catback
M6 w/ stock 10-bolt 3.42's
I've attached the graph which shows a dip in the 3k-5k range due to a couple degrees of KR, which I'm clueless about. The motor burns a decent amount of oil, and has since day one, even with my LS6 PCV. I ordered a catch can that I'm going to set up, along with cleaning out the intake, to see if that helps. However, I'm not sure if that burning of oil would cause that dip there in the graph (due to detonation).
I've also attached the cam specs so you all can perform any other calculations necessary (such as to figure out the exact SCR/DCR as I can't remember at the moment, and anything else...)
I want to get the most out of this setup. I know it's not performing at its best, and I'd like to know where to go from here. I want to get down to the nitty gritty here. Any and all critiques would be more than appreciated.
HPE 408 w/ -2cc pistons (~11.6:1 SCR, ~8.1:1 DCR, I believe, can't remember exactly though, I could be wrong)
244/248 .635/.627 112 from Futral
Ported 317's flowing 322/220 (without a pipe on the exhaust)
LS6 intake/ported TB
Edelbrock 1 7/8 stepped LT's w/ dynatech catted ORY
Loudmouth catback
M6 w/ stock 10-bolt 3.42's
I've attached the graph which shows a dip in the 3k-5k range due to a couple degrees of KR, which I'm clueless about. The motor burns a decent amount of oil, and has since day one, even with my LS6 PCV. I ordered a catch can that I'm going to set up, along with cleaning out the intake, to see if that helps. However, I'm not sure if that burning of oil would cause that dip there in the graph (due to detonation).
I've also attached the cam specs so you all can perform any other calculations necessary (such as to figure out the exact SCR/DCR as I can't remember at the moment, and anything else...)
I want to get the most out of this setup. I know it's not performing at its best, and I'd like to know where to go from here. I want to get down to the nitty gritty here. Any and all critiques would be more than appreciated.
Nice numbers, jeff does a good job. if you want the most out of that setup get rid of that damn 10 bolt already, lol. A fast 90/90 of course should pick you up a decent amount.
It doesnt really look like a big dip from 3-5k, looks more like thats where the tq sits, and then it jumps up a bit, it might actually be in the cam... Its hard to tell tho from that picture.
Good luck with the setup
It doesnt really look like a big dip from 3-5k, looks more like thats where the tq sits, and then it jumps up a bit, it might actually be in the cam... Its hard to tell tho from that picture.
Good luck with the setup
Thread Starter
Joined: Jun 2004
Posts: 5,125
Likes: 4
From: Alexandria, VA
Eh, it's definitely a dip, that's for sure. It's not the cam. Jeff does a good job, I do agree. I'm just always looking for advice/opinions/third party input as it can only help spark ideas as to how to make things better.
The 10-bolt is staying for a while. I don't have the funds for anything stronger.
As for a 90/90, I'm not really sure I want to do that either. I'm really just looking to get more out of what I have with more technical tweaks, like different cam specs/adjustments, head/DCR/SCR adjustments, etc. I'm not looking for the easy slap-on gains right now like that of a 90/90. It would assuredly help me, but I'd rather get everything figured out with what I have now before I start adding stuff.
The 10-bolt is staying for a while. I don't have the funds for anything stronger.
As for a 90/90, I'm not really sure I want to do that either. I'm really just looking to get more out of what I have with more technical tweaks, like different cam specs/adjustments, head/DCR/SCR adjustments, etc. I'm not looking for the easy slap-on gains right now like that of a 90/90. It would assuredly help me, but I'd rather get everything figured out with what I have now before I start adding stuff.
Launching!
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From: searching for the perfect driving line
The first thing I would look at is why you're getting KR. If it coincides with the dip in the graph then you know it is the reason. Also, the numbers are pretty good for a mustang dyno and still using a LS6 intake. Who is doing the tuning?
Thread Starter
Joined: Jun 2004
Posts: 5,125
Likes: 4
From: Alexandria, VA
Yea, the numbers are quite good. Please don't get me wrong. I'm not disappointed in any way. Just seeing if I can get more out of this. My tuner is Jeff at PSI in Glen Burnie, MD. He's done a great job thus far.
Your TQ drops off like a cliff after 5500, I would say that you need a FAST90/90 to keep it breating up top. You are making great TQ until 5500, if you can let it breathe better up top thos TQ numbers will stay somewhat flat up top which will result in a lot more HP.
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i'm on the 90/90 bandwagon as well.maybe save up and have it ported as well before you put it on. if your dcr is only 8.1 or so and 93 octane is available you could gain quite a bit of bottom end by advancing the cam about 4 * or so.
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Verdad Gallardo Thread Starter
Joined: Jun 2004
Posts: 5,125
Likes: 4
From: Alexandria, VA
We had the cam advanced for a while, but I wasn't really happy with it. It's installed straight up right now and that's where it works best. I will be spec'ing a new cam in the future, but not right now. Jeff thinks the KR could possibly be from burning oil, not sure though. There really is no clear answer for it at this point.
Originally Posted by ArcticZ28
We had the cam advanced for a while, but I wasn't really happy with it. It's installed straight up right now and that's where it works best. I will be spec'ing a new cam in the future, but not right now. Jeff thinks the KR could possibly be from burning oil, not sure though. There really is no clear answer for it at this point.
Thread Starter
Joined: Jun 2004
Posts: 5,125
Likes: 4
From: Alexandria, VA
Well, we originally installed it with degrees advance to move the power band down, since I had stock 317's on there that could flow worth a hoot at any high rpm's. However, after getting them ported, we retarded it back to straight up (moving the powerband up in rpm) as we could now utilize the higher rpm. When we had it advanced with the new heads, we were getting a decent amount of KR. Moving the cam back to straight up seemed to help it.
I've got an adjustable double roller set on there right now. It was brand new with the engine about 2-3k miles ago. I guess that could be a possibility, as I've heard of that causing issues before. I'm not ruling anything out at this point. As soon as I get my catch can, I'm gonna take the intake off and clean it and seafoam the engine to make sure I get as much crap out of there as I can. Then I'll put the catch can in and take it back to the dyno to see how it does without burning so much oil to see if that makes any difference. It is quite weird how it's only at 3-5k. I don't think it's necessarily b/c of the oil, but I've seen crazier things happen.
I've got an adjustable double roller set on there right now. It was brand new with the engine about 2-3k miles ago. I guess that could be a possibility, as I've heard of that causing issues before. I'm not ruling anything out at this point. As soon as I get my catch can, I'm gonna take the intake off and clean it and seafoam the engine to make sure I get as much crap out of there as I can. Then I'll put the catch can in and take it back to the dyno to see how it does without burning so much oil to see if that makes any difference. It is quite weird how it's only at 3-5k. I don't think it's necessarily b/c of the oil, but I've seen crazier things happen.