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Dyno predictions game :)

  • Thread starter Thread starter SadbutTrue
  • Start date Start date Nov 18, 2008
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SadbutTrue

Founding Member
May 1, 2002
2,390
4
49
Granada Hills, California
Nov 18, 2008
#1
  • Nov 18, 2008
  • #1
Dyno predictions game (come one come all)

Okay, I think I'm finally going to get my car dyno'd next week, either Tuesday or Wednesday before Thanksgiving. Found a place that supposedly charges $75 for 3 pulls. In the meantime I'll give it a fresh oil change, clean up the air cleaner, etc.

Rules of predictions: Person who posts the farthest off has to buy the guy who is closest a 6-pack and send it to him (should be doable for less than $15, and should make it more fun/interesting). By posting a guess you accept these terms.

Predictions should be off rwhp readings. Rwtq figures will be the tiebreaker. Post to the nearest tenth. Don't bother with flywheel projections.

The dyno is a Dynojet. In general Dynojets read about 10% higher than Mustang Dynos, though it does vary some. Figured some might want to take that into account.

Combo:
351w, .060 over
~9.3:1 compression (it has stock early 70s pistons, but the heads were shaved to 56 cc chambers which helps a little)
Trick Flow Twisted Wedge heads
Crane 1.6 roller rockers
Comp XE274H cam (specs readily avaliable online; something like adv 274/280, actual at .050 230/236, lift .519/.523, LSA 110... just off memory)
Holley Street Avenger 670
Weiand Stealth
Heddman swap headers (1 5/8")
2.5" exhaust, flowmasters, h-pipe
MSD, Pertronix, Accel coil, etc etc
K&N

T-5, 9"

Personally hoping for 300 at the wheels...



Predictions list (new predictions must be 2 hp away from any already placed... only other way to do it would be via anonymous pm or something... if we have to start over we can).

334 rwhp/352 rwtq - 68EFIVert
332? rwhp/351.9 rwtq - GNN60GT500
318.9 rwhp/343.4 tq - MrMustangMan357
315.5 rwhp/335.8 rwtq - TD68302
328.6whp/364.9 rwtq - htwheels67
 
6

68EFIvert

Member
Jan 13, 2007
639
0
17
Camas, Washington
Nov 18, 2008
#2
  • Nov 18, 2008
  • #2
I'll take the first guess. 334 rwhp and 352 rwtq. Good luck and have fun!
 

SadbutTrue

Founding Member
May 1, 2002
2,390
4
49
Granada Hills, California
Nov 18, 2008
#3
  • Nov 18, 2008
  • #3
68EFIvert said:
I'll take the first guess. 334 rwhp and 352 rwtq. Good luck and have fun!
Click to expand...

Hope you're right... I'm thinking the lack of professional tuning (though maybe they'll help me while I'm there if its slow...) and my compression might hurt me, though I've seen similar builds in magazines make as much as ~440 at the flywheel.

And I figured the thought of beer and horsepower would wake this forum up. Come on folks...
 
G

GNN60GT500

Founding Member
Jun 18, 2002
1,218
26
48
5 car lengths in front of you!
Nov 18, 2008
#4
  • Nov 18, 2008
  • #4
333.9 rwhp and 351.9rwtq
 

SadbutTrue

Founding Member
May 1, 2002
2,390
4
49
Granada Hills, California
Nov 18, 2008
#5
  • Nov 18, 2008
  • #5
GNN60GT500 said:
333.9 rwhp and 351.9rwtq
Click to expand...

I should have anticipated that putting some beer on the line would make people do this.

I'm going to post people's predictions as they come in. You must separate your horsepower prediction from prior ones by 2 hp. This should allow enough variation to ensure no one gets screwed.

Basically, predict in good faith.
 
6

68EFIvert

Member
Jan 13, 2007
639
0
17
Camas, Washington
Nov 18, 2008
#6
  • Nov 18, 2008
  • #6
Sorry I forgot to put to the nearest 1/10th. I meant to say 333.8 rwhp and 351.8 rwtq.
 

SadbutTrue

Founding Member
May 1, 2002
2,390
4
49
Granada Hills, California
Nov 18, 2008
#7
  • Nov 18, 2008
  • #7
68EFIvert said:
Sorry I forgot to put to the nearest 1/10th. I meant to say 333.8 rwhp and 351.8 rwtq.
Click to expand...

I'm trying to address that issue before too many more vote. Your vote was first so it'll stay for now, unless you want to enter a completely different one.

If someone has a recommendation for a better system, let me know.
 

mrmustangman357

Member
Feb 11, 2007
763
3
18
Nov 18, 2008
#8
  • Nov 18, 2008
  • #8
the cam is a tad small, as well as the carb. Power should pull all the way to 6000. Those heads should get the rollers moving though

My guess given your setup: 318.9 rwhp 343.4 tq without fine tuning.
 

wild70stang

New Member
Nov 11, 2005
317
0
0
Nov 18, 2008
#9
  • Nov 18, 2008
  • #9
You should have made them send it to you anonymously. But its the price is right, only were guessing ponies...
 

TD68302

New Member
Jul 29, 2007
57
0
0
Arvada, CO.
Nov 18, 2008
#10
  • Nov 18, 2008
  • #10
My guess 315.5 rwhp, 335.8 rwtq
 
H

htwheelz67

Member
May 18, 2007
444
0
16
mission viejo ca.
Nov 18, 2008
#11
  • Nov 18, 2008
  • #11
328.6whp 364.9 rwtq
 

Rusty67

20+ Year Stangneter
Dec 3, 2002
3,749
37
109
LA, CA
Nov 19, 2008
#12
  • Nov 19, 2008
  • #12
Hmm, lets see. If you drive your car like you drove mine the other day I think you will dyno 0hp 0tq because your clutch will slip and your rear wheels wont turn

Let me know when you go to get it dyno'd maybe I'll go with ya and have the Mach done too.
 

SadbutTrue

Founding Member
May 1, 2002
2,390
4
49
Granada Hills, California
Nov 19, 2008
#13
  • Nov 19, 2008
  • #13
Rusty67 said:
Hmm, lets see. If you drive your car like you drove mine the other day I think you will dyno 0hp 0tq because your clutch will slip and your rear wheels wont turn

Let me know when you go to get it dyno'd maybe I'll go with ya and have the Mach done too.
Click to expand...

Hey.... shut up
 

SadbutTrue

Founding Member
May 1, 2002
2,390
4
49
Granada Hills, California
Nov 19, 2008
#14
  • Nov 19, 2008
  • #14
Rusty67 said:
Hmm, lets see. If you drive your car like you drove mine the other day I think you will dyno 0hp 0tq because your clutch will slip and your rear wheels wont turn

Let me know when you go to get it dyno'd maybe I'll go with ya and have the Mach done too.
Click to expand...

You should. I was thinking about taking next wednesday off to do it... its in Oxnard for what its worth.
 

Rusty67

20+ Year Stangneter
Dec 3, 2002
3,749
37
109
LA, CA
Nov 19, 2008
#15
  • Nov 19, 2008
  • #15
Any chance we can make it a Friday ? That would work a lot better for me.
 

SadbutTrue

Founding Member
May 1, 2002
2,390
4
49
Granada Hills, California
Nov 19, 2008
#16
  • Nov 19, 2008
  • #16
Rusty67 said:
Any chance we can make it a Friday ? That would work a lot better for me.
Click to expand...

You free Friday morning? I have my flight class in the afternoon but could take work off that morning and do it at like 10am or so.

I would schedule it for the Friday after Thanksgiving but I doubt they'll be there. In general Fridays are bad for me because I have those flight lessons and work on the other end of the Valley, an hour or so away from this dyno shop.
 

Rusty67

20+ Year Stangneter
Dec 3, 2002
3,749
37
109
LA, CA
Nov 19, 2008
#17
  • Nov 19, 2008
  • #17
I can't do it in the morning, I'd have to take a half day and leave SB around noon.
 

SadbutTrue

Founding Member
May 1, 2002
2,390
4
49
Granada Hills, California
Nov 19, 2008
#18
  • Nov 19, 2008
  • #18
Rusty67 said:
I can't do it in the morning, I'd have to take a half day and leave SB around noon.
Click to expand...

Well crap. I might actually still try for Friday morning, it would work well for me. The place is A&A Corvette in oxnard if you want to try to hit them up another time. 3 pulls for 75 seems pretty good. Maybe they'll let me split the pulls up if the first one is dissapointing... let me go get it tuned more and come back.

And make a guess. We're talking horsepower and beer here...
 

SadbutTrue

Founding Member
May 1, 2002
2,390
4
49
Granada Hills, California
Nov 20, 2008
#19
  • Nov 20, 2008
  • #19
no other takers? will stangnet allow me to put my own vote in at 280 rwhp and 300 rwtq, (protects against disappointment... if i'm wrong and i ship a beer out i'm happy to do so, if i'm right i get a 6 pack to console myself with)?
 

mrmustangman357

Member
Feb 11, 2007
763
3
18
Nov 21, 2008
#20
  • Nov 21, 2008
  • #20
they probably wont let you split it up. it takes alot of time to get er on the rollers and set up the equipment. You'd probably be tuning it right there on the dyno. good luck on the pulls!
 
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