Slant Six Forum
https://slantsix.org/forum/

Most aerodynamic A body?
https://slantsix.org/forum/viewtopic.php?t=19628		 Page 1 of 2
Author:  Joshie225 [ Tue Sep 12, 2006 12:41 am ]
Post subject:  Most aerodynamic A body?
Anyone know for certain? I'm thinking the early A-body Barracuda probably has the best combination of low frontal area with a decent coefficient of drag, but that's just my best guess.

The reason I ask is that there is no record at Bonneville for F/CPRO (123-183ci engine/Classic Production). This means if you could show up with a legal 170ci slant car and make a couple runs one could be in the record book.
Author:  Charrlie_S [ Tue Sep 12, 2006 5:40 am ]
Post subject:  Re: Most aerodynamic A body?
Quote:
Anyone know for certain? I'm thinking the early A-body Barracuda probably has the best combination of low frontal area with a decent coefficient of drag, but that's just my best guess.

The reason I ask is that there is no record at Bonneville for F/CPRO (123-183ci engine/Classic Production). This means if you could show up with a legal 170ci slant car and make a couple runs one could be in the record book.
Want to be my "crew chief" or sponsor? :lol:
Author:  SlantSixDan [ Tue Sep 12, 2006 6:31 am ]
Post subject: 
H'mm. Good question! My guess: A specially-prepped (lowered in front, airdammed) "DaCuda" such as Doctor Dodge has built. Take a look at the hood of the '63-'64 Dart, I think it probably has the lowest front downslope.
Author:  Joshie225 [ Tue Sep 12, 2006 6:43 am ]
Post subject:  Re: Most aerodynamic A body?
Quote:
Quote:
Anyone know for certain? I'm thinking the early A-body Barracuda probably has the best combination of low frontal area with a decent coefficient of drag, but that's just my best guess.

The reason I ask is that there is no record at Bonneville for F/CPRO (123-183ci engine/Classic Production). This means if you could show up with a legal 170ci slant car and make a couple runs one could be in the record book.
Want to be my "crew chief" or sponsor? :lol:
Charlie,

If we were not in diagonally opposite ends of the 48 contiguous states I'd be more than happy to put forth a joint effort. In fact the car could run Classic Production on gas and Classic Fuel Altered with the N2O.

Josh
Author:  Joshie225 [ Tue Sep 12, 2006 6:52 am ]
Post subject: 
Quote:
H'mm. Good question! My guess: A specially-prepped (lowered in front, airdammed) "DaCuda" such as Doctor Dodge has built. Take a look at the hood of the '63-'64 Dart, I think it probably has the lowest front downslope.
I don't think a DaCuda would fit the rules very well. Would the car be an altered Dart or an altered Barracuda?

Another record setting opportunity exists in E/PP which is 184-260ci Production Pickup. That's just about any slant 6 pickup one could come up with. Why not set a record with a car and your tow vehicle? Driving a radically cammed slant pickup with a car trailer behind it might not be that fun, but it could be done.
Author:  sixsignet [ Wed Sep 13, 2006 7:45 pm ]
Post subject: 
Wouldn't it be cool if the wind tunnel results came back and it's a 1961 Lancer?

Oops. Not an A-body.

But I'll bet you'd find the fake spare outline on the 61 breaks up turbulence over the trunk.


I vote for the 1963 Valiant
Author:  Joshie225 [ Wed Sep 13, 2006 9:41 pm ]
Post subject: 
Actually a Lancer or Valiant would be cool. A '62 would probably be best/easiest as I've been told they have the same suspension as the early A-bodies. Regardless, I'd like to build a very high output normally aspirated slant and take it to Bonneville.
Author:  DionR [ Wed Sep 13, 2006 9:42 pm ]
Post subject: 
Quote:
I vote for the 1963 Valiant
I like that answer. :lol:
Author:  Reed [ Wed Sep 13, 2006 10:33 pm ]
Post subject: 
Quote:
Actually a Lancer or Valiant would be cool. A '62 would probably be best/easiest as I've been told they have the same suspension as the early A-bodies. Regardless, I'd like to build a very high output normally aspirated slant and take it to Bonneville.
I can see the movie now: "World's fastest frog" 8) :lol:
Author:  sandy in BC [ Thu Sep 14, 2006 7:37 am ]
Post subject: 
Several years ago we took the Valaint to the Canadian Snowboard Nationals ......my son qualified 34th in snowboardcross.
As part of our austerity program we stayed at the midmountain hostel.
The parking lot is very exposed , at high elevation , it snowed a foot overnight with high winds. The Valaint was parked facing the wind.

I was shocked when I went out to the car in the morning to find the Valaint with its roof and trunk area shaped like a Barracuda by drifting snow.

I use powder snow and the way it sticks or moves over the car to improve or modify airflow over vehicles. The worst car was my 69 Dart which grew huge additions to its trunk and rear valance due to high vacuum/ unaero areas. I added a roof and trunk spoiler which helped considerably. Trunk spoiler donated by Aspen SW....roof from 77 Chevelle wagon.

The picture here shows the low pressure area on the hood just behind the grille area . Lowering the front of the car would prolly help. The rear valance behind the trunk area is typical as a low pressure area. A station wagon airfoil would help
Image

The second picture shows the trunk and roof spoilers on my 69. These were very effective in keeping snow off the trunk and rear....reducing wind noise and probably improving aerodynamics.

Image
Author:  slantzilla [ Thu Sep 14, 2006 7:51 am ]
Post subject: 
Sandy is right, the back window is the key. The way the air comes off the car is way more critical that how it goes in. :shock:

Wilfred Day had great success with a '64 Barracuda. :D
Author:  Dart270 [ Fri Sep 15, 2006 7:24 am ]
Post subject: 
I agree on the back window. I think it is part of the reason why my 64 Dart gets better mileage than my 68 with about the same motor combo. I need to try that spoiler thing... I have had my 64 to 130 a few times and it felt solid and was still pulling.

I know a certain Aussie who has run over 145 on a road course with his NA 62 Valiant racecar, so 150+ should happen on a salt flat...

Lou
Author:  slantvaliant [ Fri Sep 15, 2006 9:58 am ]
Post subject: 
Speaking of roadracing slants ...

Lou, when are you going to come out for the Roadrunner Open Road Race or Big Bend Open Road Race? I'm a couple of years away from running in one, and sure would like to hear a slant holding some high RPM's for more than 1/4 mile.

www.rrorr.net www.bborr.com
Author:  Bren67Cuda904 [ Fri Sep 15, 2006 10:20 am ]
Post subject: 
Seems like I just watched on musle car TV (or something like that) that the 68 or 69 charger 500 was developed with a sloping back window and rear deck for areodinamics. It was found to not work and the racers whent back to the earlier model. I hope I didn't delete this episode and can watch it again more closely. (baby was crying through most of it)
Author:  70valiant [ Fri Sep 15, 2006 10:47 am ]
Post subject: 
The sloping back window with out a rear spoiler caused the back end to get light and unstable on the Charger 500. That is why they added the wing to the Daytona and then the Superbird (which incidently had a better design to the wing). I was watching the same episode of American Muscle Car.
One of the reasons Ford had so much trouble with the 69 and 70 Mustang Mach I was because the spoilers were all installed backwards.
Page 1 of 2 All times are UTC-08:00
Powered by phpBB® Forum Software © phpBB Limited
https://www.phpbb.com/