Could somebody Desktop Dyno my combo please?
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,286
Likes: 172
From: Lake Wylie, South Carolina
Could somebody Desktop Dyno my combo please?
Block is a .030 454 2blt main.
Crank is a cast SCAT9000.
3\8 stock rods
Heads
Series Performer RPM Oval Port
Int. port vol. 290cc
Exh. port vol. 110cc
Chamb. vol. 110cc
Deck thickness 9/16 in.
Int. valve size 2.19 in.
Exh. valve size 1.88 in.
Pistons
Part #H693CP
Piston specs: Compression@.030" bore
10.09:1 w/109.4cc heads
Cam
CCA-11-677-4
XS274S
ADV. DUR
INT = 274 EXH = 280
DUR @ .050
INT = 236 EXH = 242
LIFT
INT = .568 EXH = .578
LOBE SEP = 110
REC RPM 2K - 64K
Intake
Performer RPM Air Gap
Speed Demon 850 dbl pumper
Ignition
MSD distributor
6AL box
Rear Gear
3:70
Trannie
BW Super T10
Anything else needed for calculations?
Crank is a cast SCAT9000.
3\8 stock rods
Heads
Series Performer RPM Oval Port
Int. port vol. 290cc
Exh. port vol. 110cc
Chamb. vol. 110cc
Deck thickness 9/16 in.
Int. valve size 2.19 in.
Exh. valve size 1.88 in.
Pistons
Part #H693CP
Piston specs: Compression@.030" bore
10.09:1 w/109.4cc heads
Cam
CCA-11-677-4
XS274S
ADV. DUR
INT = 274 EXH = 280
DUR @ .050
INT = 236 EXH = 242
LIFT
INT = .568 EXH = .578
LOBE SEP = 110
REC RPM 2K - 64K
Intake
Performer RPM Air Gap
Speed Demon 850 dbl pumper
Ignition
MSD distributor
6AL box
Rear Gear
3:70
Trannie
BW Super T10
Anything else needed for calculations?
Drifting
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
Re: Could somebody Desktop Dyno my combo please? (BlackRat)
This is what it plots out at.
http://www.frontiernet.net/~grambabe/BlackRat460.jpg
HP 485@5500
TQ 539@4000
You didn't list exhaust so I used large tube headers with mufflers.
[Modified by Pete79L82, 8:13 PM 1/5/2004]
http://www.frontiernet.net/~grambabe/BlackRat460.jpg
HP 485@5500
TQ 539@4000
You didn't list exhaust so I used large tube headers with mufflers.
[Modified by Pete79L82, 8:13 PM 1/5/2004]
Drifting
Joined: Jul 2003
Posts: 1,253
Likes: 1
From: East China MI
Re: Could somebody Desktop Dyno my combo please? (BlackRat)
I ran your numbers on my Performance Trends program but I cannot post it off of the program. If you have a fax, I M me and I'll send it to you with an information sheet to fill out for a more precise report.
I got: HP=416@4500
TQ=502@4000
HP does not look right but I assumed 2-1/2" exhaust. Need more info
:smash:
[Modified by jpatrick636, 9:25 PM 1/5/2004]
I got: HP=416@4500
TQ=502@4000
HP does not look right but I assumed 2-1/2" exhaust. Need more info
:smash:
[Modified by jpatrick636, 9:25 PM 1/5/2004]
Drifting
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
Re: Could somebody Desktop Dyno my combo please? (JJMURFS)
Pete That is very impressive program!!! Have you ever check to see how accurate it is??? :cheers:
It is not very accurate. At best it is a guideline. The 2003 version is much closer than earlier versions. It usually gives numbers that are higher than a actual motor is, expecially with a roller cam. It assumes perfect timing,air/fuel ratio, fuel distribution. But it doesn't let you choose different specific manifolds. Only different types of manifolds. The same with exhaust. The other problem is the head flow files are made off of nunbers that are supplied by the manufacturer. Some manufactures greatly exaggerate thier flow numbers so it looks like if you change to their head you will get more power when in reality you will lose power on the motor. I do use it when I am flowing heads to see what kind of flow numbers I will need to support a particular HP range.
Pete
[Modified by Pete79L82, 9:25 PM 1/5/2004]
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,286
Likes: 172
From: Lake Wylie, South Carolina
Re: Could somebody Desktop Dyno my combo please? (Pete79L82)
Wow thanks guys. Those TQ numbers are awesome. I'm a little disappointed in the HP. But hay it is TQ that smokes the tires. :yesnod: :thumbs:
Thanks for the help.
Wade
Thanks for the help.
Wade
Safety Car
Joined: Jul 2002
Posts: 3,770
Likes: 3
From: St Louis MO
Re: Could somebody Desktop Dyno my combo please? (BlackRat)
I wonder what it would do with a larger cam? Like the XS282S...#11-678-5...2400-6800...590/598 lift...244/252 @ .050...110 degree lobe sep. It might be a better marriage with the heads.
Brett :thumbs:
Brett :thumbs:
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,286
Likes: 172
From: Lake Wylie, South Carolina
Re: Could somebody Desktop Dyno my combo please? (Brettmc)
Brett,
You know I am actually considering that. I was comparing that very cam with the 677. I went with the smaller one for driveability and now I am thinking that I might have made a mistake. Luckily The cam isn't in the motor yet so I guess I could always return it and go with the larger one.
Would you guys mind re running the simulation with this cam XS282S?
Intake Exhaust
Valve Adjustment 0.016 0.016
Gross Valve Lift 0.59 0.598
Duration At 0.015 Tappet Lift 282 290
Valve Timing At 0.015
Open Close
Intake 35 67
Exhaust 79 31
These Specs Are For The Cam Installed At 106 Intake CL
Intake Exhaust
Duration At 0.05 244 252
Lobe Lift 0.347 0.352
Lobe Separation 110
Thanks
Wade
You know I am actually considering that. I was comparing that very cam with the 677. I went with the smaller one for driveability and now I am thinking that I might have made a mistake. Luckily The cam isn't in the motor yet so I guess I could always return it and go with the larger one.
Would you guys mind re running the simulation with this cam XS282S?
Intake Exhaust
Valve Adjustment 0.016 0.016
Gross Valve Lift 0.59 0.598
Duration At 0.015 Tappet Lift 282 290
Valve Timing At 0.015
Open Close
Intake 35 67
Exhaust 79 31
These Specs Are For The Cam Installed At 106 Intake CL
Intake Exhaust
Duration At 0.05 244 252
Lobe Lift 0.347 0.352
Lobe Separation 110
Thanks
Wade
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Safety Car
Joined: Aug 2001
Posts: 3,892
Likes: 13
From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Re: Could somebody Desktop Dyno my combo please? (BlackRat)
The first version of my 454 was nearly identical to what you are building, except for the cam. I ran a solid roller 242 / 248 @.050 .646 and .653 lift on a 110. The motor made 450 rwhp and 470 rwt. It had tremendous throttle responce and was only down 23 rwhp at 6500 rpms. You may not want to go the solid roller route, but the duration #'s I ran (If you run a solid flat tappet) would be a good guide.
Power brakes worked fine and it idled at 950 rpms or so.
Power brakes worked fine and it idled at 950 rpms or so.
Senior Member since 1492
Joined: Aug 2000
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From: Just because I'm paranoid doesn't mean people aren't out to get me...
St. Jude Donor '09
Re: Could somebody Desktop Dyno my combo please? (BlackRat)
Wade I used my 2.25 head files and my 468 but otherwise our engines are pretty close. DDyno shows a minimum of 400 TQ(@2000) no matter which cam or intake I used. Anyway:
peak 569 TQ @ 5000 peak 609 HP @6500 I really like that XE-282S
Use these numbers as a guidline, I think DD is optimistic. I can live with 500/500(fly) and 400/400RW but that's not an easy task.
:D
[Modified by 1970 Stingray, 10:09 PM 1/6/2004]
peak 569 TQ @ 5000 peak 609 HP @6500 I really like that XE-282S
Use these numbers as a guidline, I think DD is optimistic. I can live with 500/500(fly) and 400/400RW but that's not an easy task.
:D
[Modified by 1970 Stingray, 10:09 PM 1/6/2004]
Race Director
Joined: Feb 1999
Posts: 19,659
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From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Re: Could somebody Desktop Dyno my combo please? (1970 Stingray)
Those are some great numbers. I could use some of those #'s is you have a few extra you aren't gonna be using. I wish I would have went with a little bigger cam myself.
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,286
Likes: 172
From: Lake Wylie, South Carolina
Re: Could somebody Desktop Dyno my combo please? (Eddie 70)
Thanks guys I think I am going to contact Summit today and see if I can swap out to a the larger 282s. I don't know what I was thinking. :confused: DIVEABILITY! What's that and what does it matter for a weekend cruiser? :banghead: :seeya
Wade
Wade
