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Re: 632 dyno time
[Re: hemienvy]
#3203046
01/07/24 06:18 PM
01/07/24 06:18 PM
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Joined: Jan 2003
Posts: 31,034
Oregon
AndyF
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 31,034
Oregon
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Maybe one last question, what is the intake lobe centerline set at ?
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OK maybe one more, what does the ignition timing curve look like ? No idea on lobe centerline. It is whatever GM set it at. There is no easy way to check this stuff since the engine doesn't even have a TDC pointer. You can't set the timing on the engine since you don't know what it is. You just have to trust that GM built it correctly. The ignition curve in the engine at the moment 25 at idle and 32 at WOT. There is another 6 degrees of vacuum advance built in. But who knows what the actual timing is since we can't check it.
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Re: 632 dyno time
[Re: Dragula]
#3203050
01/07/24 06:24 PM
01/07/24 06:24 PM
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Joined: Jan 2003
Posts: 31,034
Oregon
AndyF
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 31,034
Oregon
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When you have a big throttle body, it makes the throttle tip in very sensitive. Maybe even un-drivable if its a street car. I prefer, on any engine making north of 650hp, to use a progressive TB...Like a four barrel with progressive linkage. Drivability will improve. An engine will only use the amount of air it needs, no matter how big the TB is, so one that is sized a little better will give you better control. Just my 2 cents....
PS...That is the best bang for the buck engine out there right now. Thought about putting one in my Duster. Very well thought out engine, and the power it makes shows this. It is the best bang for the buck. I've worked on a few 1000 hp engine projects and this engine at $30,000 makes more power than last several projects I saw which all cost well over $40,000. Most of that is due to the fact that this is a factory designed engine that has been tested and debugged by experts. Customers who want 1000 hp sometimes don't know exactly how to get there so they waste money on the wrong parts.
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Re: 632 dyno time
[Re: AndyF]
#3203284
01/08/24 07:27 PM
01/08/24 07:27 PM
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Joined: Jan 2003
Posts: 19,363
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,363
Las Vegas
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Plenty to run bottom 8's with
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: 632 dyno time
[Re: Uberpube]
#3203346
01/09/24 12:17 AM
01/09/24 12:17 AM
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Joined: Aug 2003
Posts: 43,176
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,176
Bend,OR USA
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It's good it lived up to its power rating. We did a zz572/620 hp swap into a car that was pretty quick with a small block chev and that 572 was a dud. Why? What was wrong with it? I'm getting ready to order a BB Chevy pump gas crate motor with 700+ HP and don't want to make any mistakes on getting the best one for my customer on the first order   
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 632 dyno time
[Re: 4mopower]
#3203436
01/09/24 03:30 PM
01/09/24 03:30 PM
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Joined: Jan 2003
Posts: 31,034
Oregon
AndyF
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 31,034
Oregon
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Andy, how was the AF distribution with that intake? Cylinder to Cylinder? EGT's look good for what this worth. Customer has custom headers in the drag car with O2 sensor in each head pipe so we'll see what they say and go from there. One the dyno we only had one O2 sensor per side.
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Re: 632 dyno time
[Re: AndyF]
#3203455
01/09/24 05:40 PM
01/09/24 05:40 PM
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Joined: Feb 2008
Posts: 714
Central TEXAS!!!!
sr4440
super stock
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super stock
Joined: Feb 2008
Posts: 714
Central TEXAS!!!!
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Andy, how was the AF distribution with that intake? Cylinder to Cylinder? EGT's look good for what this worth. Customer has custom headers in the drag car with O2 sensor in each head pipe so we'll see what they say and go from there. One the dyno we only had one O2 sensor per side. Does the ecu that comes with that engine do individual cylinder correction? Would love to see the software that comes with it. Joe
Without Data, you’re just another guy with an opinion.
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Re: 632 dyno time
[Re: sr4440]
#3203472
01/09/24 06:42 PM
01/09/24 06:42 PM
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Joined: Jan 2003
Posts: 8,027
Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,027
Tulsa OK
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Andy, how was the AF distribution with that intake? Cylinder to Cylinder? EGT's look good for what this worth. Customer has custom headers in the drag car with O2 sensor in each head pipe so we'll see what they say and go from there. One the dyno we only had one O2 sensor per side. Does the ecu that comes with that engine do individual cylinder correction? Would love to see the software that comes with it. Joe I think it is a Holley terminator system so I doubt it. I am not sure any of the Holley products can correct individual cylinders.
68 Barracuda Formula S 340
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Re: 632 dyno time
[Re: Cab_Burge]
#3203519
01/10/24 12:14 AM
01/10/24 12:14 AM
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Joined: Nov 2013
Posts: 703
Southern Alberta
Uberpube
super stock
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super stock
Joined: Nov 2013
Posts: 703
Southern Alberta
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It's good it lived up to its power rating. We did a zz572/620 hp swap into a car that was pretty quick with a small block chev and that 572 was a dud. Why? What was wrong with it? I'm getting ready to order a BB Chevy pump gas crate motor with 700+ HP and don't want to make any mistakes on getting the best one for my customer on the first order It just felt lazy, like it didn't have enough compression for the cam, It sounded good, ran good, but was underwhelming for the size of the engine.
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Re: 632 dyno time
[Re: Bad340fish]
#3203566
01/10/24 12:22 PM
01/10/24 12:22 PM
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Joined: May 2019
Posts: 712
Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 712
Lake Villa Il
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I think it is a Holley terminator system so I doubt it. I am not sure any of the Holley products can correct individual cylinders.
I think terminator x, HP and Dominator have it. ![[Linked Image]](https://imagizer.imageshack.com/img922/4802/Nv8wsi.jpg)
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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Re: 632 dyno time
[Re: INTMD8]
#3203571
01/10/24 01:18 PM
01/10/24 01:18 PM
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Joined: Feb 2008
Posts: 714
Central TEXAS!!!!
sr4440
super stock
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super stock
Joined: Feb 2008
Posts: 714
Central TEXAS!!!!
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I think it is a Holley terminator system so I doubt it. I am not sure any of the Holley products can correct individual cylinders.
I think terminator x, HP and Dominator have it. Yes, that is individual fuel trim, which is not the same as having 8 o2's and having the computer make adjustments, up and down, so they are all at the targeted AFR throughout the rpm range. IE closed loop correction by cylinder.
Without Data, you’re just another guy with an opinion.
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Re: 632 dyno time
[Re: sr4440]
#3203578
01/10/24 01:54 PM
01/10/24 01:54 PM
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Joined: May 2019
Posts: 712
Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 712
Lake Villa Il
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[quote=INTMD8]
Yes, that is individual fuel trim, which is not the same as having 8 o2's and having the computer make adjustments, up and down, so they are all at the targeted AFR throughout the rpm range. IE closed loop correction by cylinder. Yes I'm aware. The ecu has the capability of individual cylinder fuel and timing correction which would be useful for this car considering- "Customer has custom headers in the drag car with O2 sensor in each head pipe" You're the first to mention 8 closed loop widebands. Holley will run closed loop with a max of 2.
Last edited by INTMD8; 01/10/24 05:33 PM.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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