Some interesting aerodynamic info

[cudabob496]

OK, this is a 2 x 4ft piece of plywood. The long side is gonna be right along the driver
side door sill. The shorter long side will be along the left exhaust pipe. The cutout to the left makes
room for the header collector, and the cutout to the right makes room for the left muffler.
Will bolt into front and rear frame with self tapping screws, and along the boxed steel subframe
connector that runs between front and rear frames, about 6 inches in from door sill. But it can be mounted
on many things, even the floor pan.

Will cutout a similar piece for the passenger side of car.

['Cuda Hunter]

yep, 18 inch by 6 inch diesel exhaust tips.

Which Exhaust tips?

I didn't even notice them before.   

[cudabob496]

Wow, noticable difference in ride. Got the spoiler in, the splitter back to the oil pan, the two 2 x 4ft pieces
along the exhaust, and the 2.5 by 3.5 ft diffuser in the back.  Car is steady as a rock, quieter,
very stable at high speed, and feels quicker. Would not be suprised if these mods picked up
.2 sec in a quarter mile. Also, engine seems to run a tad cooler, I assume due to more pressure
up front from the splitter, that forces more air into radiator.  Whether its the splitter extending in front of
the spoiler, or the part extending back to the oil pan, not sure which may be giving better cooling.  When you lift hood, and
look down in front of the engine, below the water pump, oil filter, etc, all you see is plywood.

[Surfmichaels]

Very cool! Was the mounting difficult?

[cudabob496]

Very cool! Was the mounting difficult?

No, very easy.  For 2 x  4 boards I used 1/3 inch quality plywood, shaped it as necessary. Held it against the frame with floor jack,
drilled four 3/16 holes into wood and frame, then used  1/4 inch by 1.25 inch sheel metal screws with a hex
head, and washer, to hold board against frame.  In center of 2 x 4 boards created a single mount off the floor pan. You may have to get a little
creative, but nothing Ace Hardware don't have. Mount off floorpan may not evern be necessary. Two sheet metal screws at each end may
suffice.  There's acutally some more area that can be "under trayed" between the splitter and center 2 x 4ft boards. Will look into that.

I would use Cobalt drill bits. Can find them cheap on ebay. A few times during the drilling process, I dip the drill bit tip in some
axel grease.  They drill best at a slower speed.

[johns cuda shop]

Good Stuff here, I applaud your efforts for sure. If you get some # 4 center drills ,you can get the holes started easy with a air drill. Then take the larger drill to open up the holes. 

[Moparal]

Is this proto type?  Just wondering why you chose wood for your project. Aluminum or thin metal would be lighter and last longer to.  Do you race your car?  Or are you just playing around with Ideas for better top end charges on the street?  Putting a pan under the engine compartment is good and also air deverting around the nose is very good. Cuda's and Challengers do very well up to 140 mph on good hwy roads if they came with sway bars, hd suspensions, and good shocks.  never had an isue at 80 with any cuda/barracuda.  Just about all newer hp cars are built with pan covers for the bottom of the chassis.  my 72 cuda runs 8.0s or so, 7.97 on a good day in the quarter at 168/172 mph, it has all belly pans, and nose work done to it, also it sets 3 inches off the ground. Any street car I build usually will hit a true 165 mph.  Neil has a 200 mph charger, but he built it for top end. Good luck with your project, i hope you achieve what you are looking for

[cudabob496]

Is this proto type?  Just wondering why you chose wood for your project. Aluminum or thin metal would be lighter and last longer to.  Do you race your car?  Or are you just playing around with Ideas for better top end charges on the street?  Putting a pan under the engine compartment is good and also air deverting around the nose is very good. Cuda's and Challengers do very well up to 140 mph on good hwy roads if they came with sway bars, hd suspensions, and good shocks.  never had an isue at 80 with any cuda/barracuda.  Just about all newer hp cars are built with pan covers for the bottom of the chassis.  my 72 cuda runs 8.0s or so, 7.97 on a good day in the quarter at 168/172 mph, it has all belly pans, and nose work done to it, also it sets 3 inches off the ground. Any street car I build usually will hit a true 165 mph.  Neil has a 200 mph charger, but he built it for top end. Good luck with your project, i hope you achieve what you are looking for

thanks, just playing around.  The higher quality 1/3 inch plywood seems pretty light and strong, plus a 2 x 4 ft piece is $10.  Might have to add a couple more mounting points to make it stronger. I agree, if I get more serious, may switch to stronger sheetmetal or whatever.  I know they made a successful bomber in WWII out of wood (the Misquito).  Took car out again today.  In some ways its a whole new car, handling wise.  Before I made any mods, at 80, car seemed to bounce and jump around a lot.  Skinny front tires may have played a roll. Now it is steady, smooth, and well planted.

[cudabob496]

around minute 3:30, looks like he's got a good size splitter up front.

https://www.youtube.com/watch?v=fioFRFFm_Ew

[dfrazz]

around minute 3:30, looks like he's got a good size splitter up front.

https://www.youtube.com/watch?v=fioFRFFm_Ew

I think that is just the reflection of his headlights.  I can see the scoop but not a splitter, but I am getting older everyday so it could just be me.

[cudabob496]

I think that is just the reflection of his headlights.  I can see the scoop but not a splitter, but I am getting older everyday so it could just be me.

maybe 20 secs later, when camera is in front of car, but i'm getting older too.

These guys run 2000 to 3000 hp in Oklahoma.

[cudabob496]

I think that is just the reflection of his headlights.  I can see the scoop but not a splitter, but I am getting older everyday so it could just be me.

Yep, you're right. Oh well, skip that one!

[MTS-Challenger]

Good stuff, keep sharing

Found this on ebay a few months ago
http://www.ebay.com/itm/290660214214?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

[cudabob496]

Good stuff, keep sharing

Found this on ebay a few months ago
http://www.ebay.com/itm/290660214214?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

wow, pretty cool.  sold 430! Word is getting out! I was able to make the blades on mine about 3 inches tall, by taking a large sheetmetal rain gutter from Home Depot, (about 8 ft long, cost $6) and doing a little cutting with a small jig saw.  Ended up with pieces in an L shape, one side 2 inches to bolt to board, and the other side 3 inches. In process of painting black.

[cudabob496]

someone might make some bucks by creating a stardard size front spoiler/splitter combo.  But these
days, for $25, you can also make your own.