Re: 632 dyno time
[Re: mopar dave]
#3202629
01/06/24 02:54 AM
01/06/24 02:54 AM
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Joined: Aug 2003
Posts: 43,204 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,204
Bend,OR USA
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Most of the better engine dyno have the RPM per second rate of acceleration options, I like 300 or 600 RPM per second depending on many things in the motors, street pump gas slower, race only faster with a narrowewr RPM band for the pulls on the race motors. One of the Studka brand engine dyno I use to use was horrible about controlling the engine RPM when you were advancing the throttle to WOT before starting the pulls, I had to learn to advance that throttle SLOWLY before starting the test. On the DTS and Super Flows dynos that wasn't an issue
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 632 dyno time
[Re: Cab_Burge]
#3202658
01/06/24 09:45 AM
01/06/24 09:45 AM
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Joined: Jan 2003
Posts: 8,165 Plymouth, MI
Blusmbl
master
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master
Joined: Jan 2003
Posts: 8,165
Plymouth, MI
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It really is an impressive piece. More expensive than some of the other 1000-ish hp crate motors but for that money you’re getting oem levels of engineering and development.
'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
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Re: 632 dyno time
[Re: AndyF]
#3202810
01/06/24 05:51 PM
01/06/24 05:51 PM
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Joined: Jan 2003
Posts: 14,499 So. Burlington, Vt.
fast68plymouth
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I Live Here
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Posts: 14,499
So. Burlington, Vt.
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Andy, I’m sure you mentioned it in a previous thread, but what’s the story on that manifold?
They normally get a typical single plane……no?
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 632 dyno time
[Re: fast68plymouth]
#3202818
01/06/24 07:08 PM
01/06/24 07:08 PM
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Joined: Jan 2003
Posts: 31,042 Oregon
AndyF
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Yep, here is the way they come from Chevy. Stock water pump, cast intake with a Dominator bolt pattern. It is an EFI engine so they come with a really huge throttle body. It has super big throttle blades in it, probably flows more than 2500 cfm. The owner wanted a front facing intake for his car. This engine is going in a tube chassis '57 Chevy and he wanted the throttle body in front so he could put a flat hood on it. It is a Hogan billet intake. Cost a small fortune.
Last edited by AndyF; 01/06/24 07:09 PM.
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Re: 632 dyno time
[Re: hemienvy]
#3202965
01/07/24 12:41 PM
01/07/24 12:41 PM
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Joined: Jan 2003
Posts: 8,165 Plymouth, MI
Blusmbl
master
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master
Joined: Jan 2003
Posts: 8,165
Plymouth, MI
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113 LSA. I like how in the Jegs reviews for the motor somebody gave it 1 star because of pump gas and 12:1 compression. With a cam that large I'm not surprised at all it can run at 12:1 on pump 93.
'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
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Re: 632 dyno time
[Re: AndyF]
#3202967
01/07/24 12:46 PM
01/07/24 12:46 PM
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Joined: May 2019
Posts: 713 Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 713
Lake Villa Il
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Bad ass engine. I haven't seen one with the forward facing intake, very nice. I like the injector placement as well. What size throttle body? Will be interesting to see if it shows any restriction/vacuum at high rpm.
Last edited by INTMD8; 01/07/24 12:49 PM.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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Re: 632 dyno time
[Re: Blusmbl]
#3202975
01/07/24 01:15 PM
01/07/24 01:15 PM
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Joined: Jan 2003
Posts: 31,042 Oregon
AndyF
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OP
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Oregon
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113 LSA. I like how in the Jegs reviews for the motor somebody gave it 1 star because of pump gas and 12:1 compression. With a cam that large I'm not surprised at all it can run at 12:1 on pump 93. We're running 50/50 pump gas and av gas on the dyno. Not sure what the owner will run. Probably 110 race gas. It really needs a 102 unleaded but he can't find it around here. The problem is the O2 sensors foul up with lead and they cost $600 for the pair.
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Re: 632 dyno time
[Re: INTMD8]
#3202976
01/07/24 01:16 PM
01/07/24 01:16 PM
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Joined: Jan 2003
Posts: 31,042 Oregon
AndyF
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OP
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Oregon
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Bad ass engine. I haven't seen one with the forward facing intake, very nice. I like the injector placement as well. What size throttle body? Will be interesting to see if it shows any restriction/vacuum at high rpm. It is a MSD Atomic 103mm throttle body. It was the largest we could find that would fit the bolt pattern in the intake. The intake came from Hogan. Owner said it was the only one they had made but maybe they've made more of them by now. I've never seen one before. It is multipiece billet.
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Re: 632 dyno time
[Re: AndyF]
#3202981
01/07/24 01:30 PM
01/07/24 01:30 PM
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Joined: Jun 2016
Posts: 907 Washington
hemienvy
super stock
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super stock
Joined: Jun 2016
Posts: 907
Washington
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Maybe one last question, what is the intake lobe centerline set at ?
************
OK maybe one more, what does the ignition timing curve look like ?
Last edited by hemienvy; 01/07/24 01:39 PM. Reason: more info
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Re: 632 dyno time
[Re: hemienvy]
#3202984
01/07/24 01:35 PM
01/07/24 01:35 PM
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Joined: Jan 2003
Posts: 19,367 Las Vegas
Al_Alguire
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I Live Here
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Posts: 19,367
Las Vegas
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Everyone realizes this is a brand new design cylinder head for a BBC right? That bog of an intake valve it should make power, be hard not to frankly. We have flogged one on the dyno with similar results but with the stock intake and throttle body. Be ZERO reason a guy could build a Predator engine to run pump swill that can make that power. These sell for $32-33K a decent value for sure.
"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: Al_Alguire]
#3202992
01/07/24 02:02 PM
01/07/24 02:02 PM
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Joined: May 2004
Posts: 12,392 Taxes & Virus's R-US, NY
Dragula
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I Live Here
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Taxes & Virus's R-US, NY
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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.
Last edited by Dragula; 01/07/24 02:03 PM.
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Re: 632 dyno time
[Re: Dragula]
#3203001
01/07/24 02:57 PM
01/07/24 02:57 PM
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Joined: May 2019
Posts: 713 Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 713
Lake Villa Il
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These aren't bad for throttle sensitivity. The cam the cable attaches to results in less initial blade movement vs throttle input. (of course not working that way with the dyno throttle attachment)
Last edited by INTMD8; 01/07/24 02:58 PM.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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