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Old 02-29-2012, 06:55 PM   #1
77BBGMC
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Re: 496 to be DYNO'D!

I don't know if you have done the Dyno experience but if you haven't it's cool. *I did it when we finished my motor and glad I did. *
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Old 03-02-2012, 11:05 PM   #2
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Re: 496 to be DYNO'D!

I'm guessing in at 670hp/655tq, oh ya I'm right, oops to early.
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Old 04-22-2012, 09:00 PM   #3
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Re: 496 to be DYNO'D!

Photos of the 82 the 496 is going into soon...
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82 GMC High Sierra
VortecPro 496
12 Bolt, 3.42's

AFR 265
Holley 850
Performer RPM Air Gap
Hooker 2455's
TCI Turbo 400 Super Street Fighter
TRRC 12 Bolt
Eaton Posi
Mark Williams Axles
Cal-Tracs
Hoosier 30x10.5 Radial Slick
Full weight long box pickup
Current best- 11.33@117mph
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Old 04-22-2012, 11:29 PM   #4
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Re: 496 to be DYNO'D!

Nice clean truck but the diff loks like a 496 may just eat it for breakfast, hehe
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Old 04-23-2012, 08:33 AM   #5
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Re: 496 to be DYNO'D!

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Originally Posted by 69GMC910 View Post
Photos of the 82 the 496 is going into soon...
Nice looking truck!
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Old 04-23-2012, 07:16 PM   #6
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Re: 496 to be DYNO'D!

Smart man on the 12 bolt at least, what trans are you running, stall also. That 496 should really rip, would like to hear it running in the truck, should be wicked. I imagine 3" exhaust for sure?
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Old 02-29-2012, 08:09 PM   #7
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Re: 496 to be DYNO'D!

It's being dyno'd in Colorado, and currently I'm on a drilling rig near Fort Nelson, British Columbia...
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82 GMC High Sierra
VortecPro 496
12 Bolt, 3.42's

AFR 265
Holley 850
Performer RPM Air Gap
Hooker 2455's
TCI Turbo 400 Super Street Fighter
TRRC 12 Bolt
Eaton Posi
Mark Williams Axles
Cal-Tracs
Hoosier 30x10.5 Radial Slick
Full weight long box pickup
Current best- 11.33@117mph
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Old 02-29-2012, 11:29 PM   #8
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Re: 496 to be DYNO'D!

Wooo BC!!

I bet it is cold up there right now
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Old 03-01-2012, 12:26 AM   #9
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Re: 496 to be DYNO'D!

I think its -18 and the wind is about 20km/hr... Brrrrrr!
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82 GMC High Sierra
VortecPro 496
12 Bolt, 3.42's

AFR 265
Holley 850
Performer RPM Air Gap
Hooker 2455's
TCI Turbo 400 Super Street Fighter
TRRC 12 Bolt
Eaton Posi
Mark Williams Axles
Cal-Tracs
Hoosier 30x10.5 Radial Slick
Full weight long box pickup
Current best- 11.33@117mph
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Old 03-02-2012, 03:46 AM   #10
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Re: 496 to be DYNO'D!

With Mark Jones work ill guess 685 hp.
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Old 03-02-2012, 03:47 AM   #11
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Re: 496 to be DYNO'D!

No port work by mark will be around 607-617
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Old 03-02-2012, 03:24 PM   #12
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Re: 496 to be DYNO'D!

i say mid 500. and a little over that for tq.
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Old 03-02-2012, 03:44 PM   #13
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Re: 496 to be DYNO'D!

Yes, the heads are ported by Mark.
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82 GMC High Sierra
VortecPro 496
12 Bolt, 3.42's

AFR 265
Holley 850
Performer RPM Air Gap
Hooker 2455's
TCI Turbo 400 Super Street Fighter
TRRC 12 Bolt
Eaton Posi
Mark Williams Axles
Cal-Tracs
Hoosier 30x10.5 Radial Slick
Full weight long box pickup
Current best- 11.33@117mph
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Old 03-02-2012, 11:01 PM   #14
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Re: 496 to be DYNO'D!

Here's the situation... Mark Jones' dyno is broken. Somethin about a servo or whatever.. It is currently being rebuilt, and should be ready for action either tomorrow or early next week. Here's hoping for big numbers!!!! I have a "guestimation" for hp, and so far a couple if guesses are within 15-20 of what I am hoping for! No matter what the final number is, it's going to be a monster compared to my backyard 383!!!
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82 GMC High Sierra
VortecPro 496
12 Bolt, 3.42's

AFR 265
Holley 850
Performer RPM Air Gap
Hooker 2455's
TCI Turbo 400 Super Street Fighter
TRRC 12 Bolt
Eaton Posi
Mark Williams Axles
Cal-Tracs
Hoosier 30x10.5 Radial Slick
Full weight long box pickup
Current best- 11.33@117mph
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Old 03-02-2012, 11:11 PM   #15
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Re: 496 to be DYNO'D!

Lol!
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82 GMC High Sierra
VortecPro 496
12 Bolt, 3.42's

AFR 265
Holley 850
Performer RPM Air Gap
Hooker 2455's
TCI Turbo 400 Super Street Fighter
TRRC 12 Bolt
Eaton Posi
Mark Williams Axles
Cal-Tracs
Hoosier 30x10.5 Radial Slick
Full weight long box pickup
Current best- 11.33@117mph
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Old 03-02-2012, 11:16 PM   #16
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Re: 496 to be DYNO'D!

All I know is having a 460 in my 71 4x4 is way more fun than the 330hp 5.7 ever was, just cooks the 35" tires like crazy in 4whigh. Smiling all day when I drive the beast and it's only 525hp.
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Old 03-02-2012, 11:33 PM   #17
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Re: 496 to be DYNO'D!

Youtube "testin 496" It is that truck that made me want to do this!
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82 GMC High Sierra
VortecPro 496
12 Bolt, 3.42's

AFR 265
Holley 850
Performer RPM Air Gap
Hooker 2455's
TCI Turbo 400 Super Street Fighter
TRRC 12 Bolt
Eaton Posi
Mark Williams Axles
Cal-Tracs
Hoosier 30x10.5 Radial Slick
Full weight long box pickup
Current best- 11.33@117mph
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Old 03-02-2012, 11:38 PM   #18
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Re: 496 to be DYNO'D!

Or just watch it here!

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82 GMC High Sierra
VortecPro 496
12 Bolt, 3.42's

AFR 265
Holley 850
Performer RPM Air Gap
Hooker 2455's
TCI Turbo 400 Super Street Fighter
TRRC 12 Bolt
Eaton Posi
Mark Williams Axles
Cal-Tracs
Hoosier 30x10.5 Radial Slick
Full weight long box pickup
Current best- 11.33@117mph
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Old 03-03-2012, 01:09 AM   #19
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Re: 496 to be DYNO'D!

Interested in seeing what it makes. Did he give you flow numbers on the ported heads? I used stock flow numbers.
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------Motor---------------Bottle
60'---1.53---------------1.41
1/8---6.58 @ 105.92----5.87 @ 118.41
1/4---10.38 @ 126.97----9.24 @ 142.49
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Old 03-03-2012, 01:24 AM   #20
69GMC910
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Re: 496 to be DYNO'D!

Sorry. I have not requested that info yet... If you are familier with his work, you know he get's everything he can out of every head!
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82 GMC High Sierra
VortecPro 496
12 Bolt, 3.42's

AFR 265
Holley 850
Performer RPM Air Gap
Hooker 2455's
TCI Turbo 400 Super Street Fighter
TRRC 12 Bolt
Eaton Posi
Mark Williams Axles
Cal-Tracs
Hoosier 30x10.5 Radial Slick
Full weight long box pickup
Current best- 11.33@117mph
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Old 03-03-2012, 02:21 AM   #21
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Re: 496 to be DYNO'D!

well being that I have nearly the same goodies on mine as yours does (I have eldelbrock heads instead) but same c.r. , manifold, carb, but slight milder cam then I've got...
so I will guess a solid 615hp if you got roller rockers... if not I'll say 599hp
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Old 03-03-2012, 02:26 AM   #22
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Re: 496 to be DYNO'D!

oh yea, by the way, I am hovering at 630 horse... so you have some kinda reference.
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Old 03-03-2012, 02:26 AM   #23
69GMC910
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Re: 496 to be DYNO'D!

What does your combo make smoknbarrels? And where ya at in AB?!
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82 GMC High Sierra
VortecPro 496
12 Bolt, 3.42's

AFR 265
Holley 850
Performer RPM Air Gap
Hooker 2455's
TCI Turbo 400 Super Street Fighter
TRRC 12 Bolt
Eaton Posi
Mark Williams Axles
Cal-Tracs
Hoosier 30x10.5 Radial Slick
Full weight long box pickup
Current best- 11.33@117mph
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Old 03-05-2012, 12:22 AM   #24
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Re: 496 to be DYNO'D!

Quote:
Originally Posted by 69GMC910 View Post
What does your combo make smoknbarrels? And where ya at in AB?!
I am near Edmonton... not sure what you mean - "what does my combo make?"
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Old 03-04-2012, 07:58 PM   #25
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Re: 496 to be DYNO'D!

I say 685. Similar combo made 665 with no work but "hybrid" cam.

That video also made me want a 496 lol
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