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10-31-2008, 08:37 AM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
How do you make an 815 CI engine ?
With all the gear heads here pushing the "limits" in so many posts, why has no one here done this??
http://www.youtube.com/watch?v=htTogHf153E
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__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
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Utinam logica falsa tuam philosophiam totam suffodiant!
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Last edited by CobraEd; 10-31-2008 at 09:21 AM..
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10-31-2008, 10:18 AM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,027
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Not Ranked
If I remember right, the Mountain Motors that the IHRA Pro Stock boys run are all at 800 Cubic Inches.
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10-31-2008, 11:35 AM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
I guess what i don't get is that we have a huge argument about if you can build a 582 from an FE or not:
http://clubcobra.com/forums/showthre...threadid=91730
And then you see an 815 CI engine. What do they use a Mack Truck block ??? 
Obviously not, but then what ????????????????
.
__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
________
Utinam logica falsa tuam philosophiam totam suffodiant!
________
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10-31-2008, 01:07 PM
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CC Member
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Join Date: Apr 2003
Location: ATL-SAV,
GA
Cobra Make, Engine: Yard Dog FFR 521, 572 Fire Ant Mongrel Cobra 393, 566, Boss 600 hemi , RCR40 #13 348
Posts: 158
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Not Ranked
They are custom aluminum blocks with wider bore spacing and higher deck. With hemi heads, the 815 is 36" wide and much taller than a 460.
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10-31-2008, 01:52 PM
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CC Member
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Join Date: Oct 2008
Location: Avon,
NY
Cobra Make, Engine: 1969 Mustang Fastback Pro-Street, constantly changing ongoing project!
Posts: 746
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Not Ranked
Quote:
Originally Posted by CobraEd
I guess what i don't get is that we have a huge argument about if you can build a 582 from an FE or not:
http://clubcobra.com/forums/showthre...threadid=91730
And then you see an 815 CI engine. What do they use a Mack Truck block ???
Obviously not, but then what ????????????????
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Hi Ed, If I am not mistaken, The max you can safely go with an aftermarket 427 block (Pond, Genesis, Shelby) is 542. The max on a factory FE is 482 & it has to be a true 428 stamped service block. Not just a service block with the extra webbing but a stamped 428 service block with the thicker cylinder walls. The max on a Ford 385 series block is 815 & they are run by the Top competitors in NHRA & IHRA producing about 9000 hp.
Come to think of it, I wonder how they Dyno them?? 
Just my 2 cents.
Regards,
__________________
Mick
(Of The Troops & For The Troops)
Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body; but rather a skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, WHAT A RIDE!"
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10-31-2008, 03:37 PM
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Beam Me Up Scottie
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Join Date: Aug 2004
Location: Squantum (part of Quincy),
MA
Cobra Make, Engine: SPF1049 Titanium w/black stripes, 351W with Trick Flow Heads, Tremec 3550
Posts: 7,592
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Not Ranked
Quote:
Originally Posted by Fordzilla
The max on a Ford 385 series block is 815 & they are run by the Top competitors in NHRA & IHRA producing about 9000 hp.
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9000 HP ??????????????????
Try about 1800 to 2000 HP in a Top Sportsman car.
What class in NHRA allows an 815 cu in motor?
__________________
Warren
'Liberals are maggots upon the life of this planet and need to get off at the next rotation.' (Jamo 2008)
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10-31-2008, 03:56 PM
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CC Member
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Join Date: Feb 2001
Location: St. Louis, Missouri,
MO
Cobra Make, Engine: SPO 2715
Posts: 1,648
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Not Ranked
Quote:
Originally Posted by wtm442
9000 HP ??????????????????
Try about 1800 to 2000 HP in a Top Sportsman car.
What class in NHRA allows an 815 cu in motor?
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Top Fuel, and on a good day Top Alcohol get up to 8,000 hp @ 456ci?
456ci is tops right?
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10-31-2008, 04:49 PM
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Senior Club Cobra Member
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Join Date: Mar 2000
Location: St. Augustine,
FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
Posts: 1,930
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Not Ranked
Here's a bit of info about top fuel from Kenny Bernstein's web site:
Quote:
Engine
Supercharged 500 cubic inch TFX aluminum hemi V-8 block
Bore & Stroke
4.19 x 4.50 inches
Horsepower
7,000 to 8,000
Acceleration
Zero to 100 miles per hour in .8 seconds
Zero to 275 miles per hour in 3 seconds
Zero to 330 miles per hour in 4.5 seconds
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I understand they can go 0-60 in one car length...
Here's the pro stock mountain motor info from Jon Kaase's site:
Quote:
815 Cubic Inch Pro Stock Ford HEMI Engine
1700+ horsepower
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Since the deck height is much greater than the production block based engines, you could probably fit one of these in a Cobra if you moved the hood upward by about a foot...
__________________
Wells's law of engine size: If it matters what gear you're in, the engine's too small!
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10-31-2008, 05:08 PM
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CC Member
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Join Date: Oct 2008
Location: Avon,
NY
Cobra Make, Engine: 1969 Mustang Fastback Pro-Street, constantly changing ongoing project!
Posts: 746
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Not Ranked
Quote:
Originally Posted by Great Asp
Top Fuel, and on a good day Top Alcohol get up to 8,000 hp @ 456ci?
456ci is tops right?
E
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Hi E, Yes, Top Fuel. Tony Schumacher runs 500 cubes. I'll try posting a link to a good read. I don't know if it will be a hot link or if you have to copy & paste into your search engine.
http://www.edmunds.com/insideline/do...ticleId=120159
Also, I think the Pro Stock & Pro Mod classes run 815 cubes. Anyway, The Top Fuel & Pro-Stock/Mod engines are incredible & huge dollars. Just to stand next to one when it's launching is an experience all by itself.
Regards,
__________________
Mick
(Of The Troops & For The Troops)
Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body; but rather a skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, WHAT A RIDE!"
Last edited by Fordzilla; 10-31-2008 at 05:13 PM..
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10-31-2008, 05:42 PM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,027
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Not Ranked
All Pro classes in the NHRA are limited to 500 CI engines.
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10-31-2008, 06:14 PM
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Senior Club Cobra Member
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Join Date: Mar 2000
Location: St. Augustine,
FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
Posts: 1,930
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Not Ranked
Quote:
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All Pro classes in the NHRA are limited to 500 CI engines.
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Correct!
Sorry to confuse by not being more specific: IHRA allows "mountain motors", currently topping out around 815 cubic inches
__________________
Wells's law of engine size: If it matters what gear you're in, the engine's too small!
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10-31-2008, 06:18 PM
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CC Member
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Join Date: Jul 2008
Location: Phoenix,
AZ
Cobra Make, Engine: Sage Brush Roadsters body, Custom Chassis, SRT-4 Engine
Posts: 65
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Not Ranked
From the 2008 NHRA Rule Book...
Pro Modified:
No supercharger: 820
Supercharged: 527
Top Alcohol Dragster:
No supercharger (uses nitromethane instead of methanol): 456
Roots supercharger (methanol): 528
Screw-type supercharger (methanol): 466
Top Alcholol Funny Car:
Roots supercharger: 565
Screw-type supercharger: 528
Pro-Stock: 500
Top Fuel Funny Car: 500 (also has a minimum of 490)
Top Fuel Dragster: 500 (w/ 490 minimum)
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10-31-2008, 06:34 PM
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CC Member
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Join Date: Oct 2008
Location: Avon,
NY
Cobra Make, Engine: 1969 Mustang Fastback Pro-Street, constantly changing ongoing project!
Posts: 746
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Not Ranked
Thanks for posting the rules. I didn't realize there was a minimum in the 2 top fuel classes. That's interesting.
__________________
Mick
(Of The Troops & For The Troops)
Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body; but rather a skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, WHAT A RIDE!"
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10-31-2008, 07:04 PM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,027
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Not Ranked
Quote:
Originally Posted by MChat
From the 2008 NHRA Rule Book...
Pro Modified:
No supercharger: 820
Supercharged: 527
Top Alcohol Dragster:
No supercharger (uses nitromethane instead of methanol): 456
Roots supercharger (methanol): 528
Screw-type supercharger (methanol): 466
Top Alcholol Funny Car:
Roots supercharger: 565
Screw-type supercharger: 528
Pro-Stock: 500
Top Fuel Funny Car: 500 (also has a minimum of 490)
Top Fuel Dragster: 500 (w/ 490 minimum)
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I forgot about the Pro-Mod class. Thanks for correcting me. |
10-31-2008, 08:44 PM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
If you think this will fit in a Cobra ..Think Again. This is 698" Kaase from a couple of years ago:
[IMG]  [/IMG]
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
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10-31-2008, 09:07 PM
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CC Member
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Join Date: Jul 2008
Location: Phoenix,
AZ
Cobra Make, Engine: Sage Brush Roadsters body, Custom Chassis, SRT-4 Engine
Posts: 65
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Not Ranked
Quote:
Originally Posted by Silverback51
I forgot about the Pro-Mod class. Thanks for correcting me.
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No problem. I wasn't trying to "correct" anyone though, just had the book here at my desk so I looked it up and posted what I found.
I didn't realize how "limited" the Top Fuel class really is. Basically it looks like everyone is running the same car, it's just a matter of how good your tuner and driver are.
I also didn't realize that you could run a Naturally Aspirated dragster on Nitro in Top Alchohol either. I wonder if anyone actually does that? |
10-31-2008, 09:16 PM
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Beam Me Up Scottie
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Join Date: Aug 2004
Location: Squantum (part of Quincy),
MA
Cobra Make, Engine: SPF1049 Titanium w/black stripes, 351W with Trick Flow Heads, Tremec 3550
Posts: 7,592
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Not Ranked
Quote:
Originally Posted by MChat
I also didn't realize that you could run a Naturally Aspirated dragster on Nitro in Top Alchohol either. I wonder if anyone actually does that?
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Quite a few run that way, and a couple are always in the running to win any race.
__________________
Warren
'Liberals are maggots upon the life of this planet and need to get off at the next rotation.' (Jamo 2008)
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10-31-2008, 09:37 PM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
The nitro cars that run in TAD generally get beat by the tuning as they are much more difficult to get right. They often put out a cylinder during the run.
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way
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11-01-2008, 06:35 AM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,027
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Not Ranked
Quote:
Originally Posted by Rick Parker
The nitro cars that run in TAD generally get beat by the tuning as they are much more difficult to get right. They often put out a cylinder during the run.
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That's the problem.
If they run good, they have a real good chance of winning. They just need to keep all eight cylinders lit. |
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