View Full Version : Rear spoiler on dragcar


70RS/SS396
12-31-2011, 02:34:00 PM
Hello

I have i dragrace camaro 71. And now I have a new motor in it. Expect to run 180-190 mph.

I dont have any rearspoiler at the moment....but I think I need one now with the new motor in the car.....

How about the big original rear (3 piece) spoiler.....does it generate good downforce?

Thanks

mrdragster1970
12-31-2011, 03:45:09 PM
.

What tire are you running??
You might not need down force, but more likely you need to stop it from lifting.
I have always been told our cars start to wrap around at ~140 mph.
I run 160 with the small 1 piece stock spoiler on a 10" tire.
I put it on when I hit 140's and never had an issue even with a tiny tire.

Now if you are trying to do 190 on a small tire, then you will probably need some down force.
Personally I would want an adjustable set up so you don't have an anchor dragging back there that you don't need.
I can see the stock 3 piece being a pretty big drag, that you are stuck with, needed or not.
In my class there are a bunch of guys running 200+ with a small modern Pro-Stock set up.
The days of the giant wings are over, they are not needed anymore.
You want the minimum drag, the air moved away from the body, and the least amount of down force that is required.


.

70RS/SS396
12-31-2011, 04:48:35 PM
.

What tire are you running??
You might not need down force, but more likely you need to stop it from lifting.
I have always been told our cars start to wrap around at ~140 mph.
I run 160 with the small 1 piece stock spoiler on a 10" tire.
I put it on when I hit 140's and never had an issue even with a tiny tire.

Now if you are trying to do 190 on a small tire, then you will probably need some down force.
Personally I would want an adjustable set up so you don't have an anchor dragging back there that you don't need.
I can see the stock 3 piece being a pretty big drag, that you are stuck with, needed or not.
In my class there are a bunch of guys running 200+ with a small modern Pro-Stock set up.
The days of the giant wings are over, they are not needed anymore.
You want the minimum drag, the air moved away from the body, and the least amount of down force that is required.


.


I run either 33x14,5-15 or 32x14-15 tires. Car weight 2288 lbs on the startline with me in it, and a smallblock motor. But now im going to drive a bigblock in it.

mrdragster1970
12-31-2011, 06:57:38 PM
.

What kind of engine combo is it?? 190 is frigging fast,
and takes decent power, even in a light car like yours.
With the added weight, it's probably going to take ~1300 HP plus to get in the 190 mph area??
I know my car is heavier then yours, but it took almost 1500 HP to get mine in the 190's.
I'm actually working on a 1600 hp+ motor now to try and get the car back over 200 mph if I can lose some weight also??

.

muscl car
12-31-2011, 07:03:48 PM
a member here ....brant "mean sbc" who runs XDR 275 in PSCA and class champion fore 2011 has gone 7.910/188.41mph with this set up





http://www.pscaracing.com/images/XS11R4Jbrant2.jpg
http://www.pscaracing.com/images/XS11R4Jbrant4.jpg
http://www.pscaracing.com/images/XS11R4Jbrant.jpg
http://www.pscaracing.com/images/XS11R4Jbrant6.jpg
http://www.pscaracing.com/images/XS11R4Jbrant3.jpg
http://www.pscaracing.com/images/XS11R4Jbrant5.jpg

strstk71
12-31-2011, 07:24:37 PM
is that the crank drivin supercharger on that thing? or a big ass turbo???

muscl car
12-31-2011, 07:34:52 PM
is that the crank drivin supercharger on that thing? or a big ass turbo???

1 very big Precision turbo PT 114 mm turbo feeding a 555bbc !!!:)

wild84
12-31-2011, 07:41:24 PM
It's also not a factory spoiler, it is adjustable, and he's doin what Mrdragster was talkin about of goin fast on a small tire.

It's also been down the track without the spoiler on it :crazy:

Edit, it's a 118mm and been 7.6x 192+....


ps. I think Brant has a fan club!

muscl car
12-31-2011, 07:48:43 PM
here's another view of brants rear spoiler ....


http://a4.sphotos.ak.fbcdn.net/hphotos-ak-snc6/216348_216552821689722_100000050171736_942488_2731209_n.jpg

muscl car
12-31-2011, 07:56:51 PM
al jimenez went 7.24/200mph with this set up and same rear wing as brants


http://image.chevyhiperformance.com/f/18344679+w750+st0/0906chp_02_z+515_big_block_engine+with_a_procharger_supercharger.jpg
http://image.chevyhiperformance.com/f/18344709+w750+st0/0906chp_09_z+cal_tracs+part.jpg
http://image.chevyhiperformance.com/f/18344706+w750+st0/0906chp_12_z+1973_chevy_camaro+front_view.jpg
http://image.chevyhiperformance.com/f/18344646+w750+st0/0906chp_08_z+1973_chevy_camaro+rear_view.jpg

jeffrey10x2
12-31-2011, 11:30:24 PM
i see your location is Europe
do you mean mph or kph?
i run just under 140 mph and use a jerry bickle rear sportsman wing. its adjustable and very easy to install.
here are some pics of it.
http://a7.sphotos.ak.fbcdn.net/hphotos-ak-snc6/263323_231266860250949_100001029112578_742902_7951918_n.jpg
http://a2.sphotos.ak.fbcdn.net/hphotos-ak-snc6/231187_201530223224613_100001029112578_605598_3355376_n.jpg

70RS/SS396
01-01-2012, 04:45:57 AM
.

What kind of engine combo is it?? 190 is frigging fast,
and takes decent power, even in a light car like yours.
With the added weight, it's probably going to take ~1300 HP plus to get in the 190 mph area??
I know my car is heavier then yours, but it took almost 1500 HP to get mine in the 190's.
I'm actually working on a 1600 hp+ motor now to try and get the car back over 200 mph if I can lose some weight also??

.

I just bought a complete driveline from a car, its a 632 CBB and a PG trans.
The car is came from has went 200 mph with this combo. About the samt weight as mine. :)

http://i115.photobucket.com/albums/n288/krillecheva/SDC12205.jpg

http://i115.photobucket.com/albums/n288/krillecheva/DSCN3682.jpg


So what spoiler do you guys think I need? Original low or high one? Or aftermarket aluminium like the cars on the pics in the tropic?

The car looks like this right now
http://402m.se/racebilder/110710elinor/20110710-KP32441.jpg

70RS/SS396
01-01-2012, 04:52:12 AM
i see your location is Europe
do you mean mph or kph?
i run just under 140 mph and use a jerry bickle rear sportsman wing. its adjustable and very easy to install.
here are some pics of it.


I mean mph :)

Nice car!

Is it this kit? http://www.jerrybickel.com/sportsman-wing-kit-jbrc2012a.html

Did it fit without any modifications?

mrdragster1970
01-01-2012, 07:51:34 AM
.

I was referring to the wing Jeffery has, that would be my choice.
Small, functional, not a huge piece to take away from the car.
The other wing is also a great choice, and if you don't mind how big it is,
it is a proven piece.
I love how it looks, but I'm old & love big wings as you can tell from my car.


Now, about that engine.
Do you know the guy personally, did you see it run 200 mph, and are you sure that's the engine??
I'm no expert, but I have been racing for a couple of weeks, and I don't remember seeing that head ever run 200 mph without nitrous/boost??

Good luck.


.

jeffrey10x2
01-01-2012, 08:36:58 AM
yes , that is the wing. ony thin i had to do was cut the alum. hinge that mounts to the trunk and drill holes in the rear bumper to mount the strut rod mounts.

jmo, we have a ton of fast cars at the track i run at.
one car is a 2011 hass pontiac GXP. it runs the adrl extreme pro stock circuit. they run a sonny, chevy hemi 827 cu in. and only run like 207 in the 1/4.
tell me more about the chassis. at that speed, ill bet you will need to do some upgrades on the chasiss.
what was your best time and mph so far with the old set up?
im not trying to bust you or anything, but have seen motors of the same size and set up only run 187 in a dragster that is 600 lbs lighter.

Louich
01-01-2012, 10:25:44 AM
ive had no handling problems at all with stock spoiler at 150 mph

mrdragster1970
01-01-2012, 10:47:27 AM
jmo, we have a ton of fast cars at the track i run at.
one car is a 2011 hass pontiac GXP. it runs the adrl extreme pro stock circuit. they run a sonny, chevy hemi 827 cu in. and only run like 207 in the 1/4.
tell me more about the chassis. at that speed, ill bet you will need to do some upgrades on the chasiss.
what was your best time and mph so far with the old set up?
im not trying to bust you or anything, but have seen motors of the same size and set up only run 187 in a dragster that is 600 lbs lighter.


I was going to ask that myself.
To run 180-190 he's going to need a professionally designed, quality chassis set up just to pass tech.
After seeing the engine, I didn't bother, for the reason you mentioned.
Again, no expert, but if that thing ran 200 mph at that weight, it would be the 1st, or close to it??
I run T/S and there are plenty of guys with much better engines then that, on N2O and they don't run 200 mph.

So again, good luck, have fun no matter how much power it actually makes.

.

70RS/SS396
01-01-2012, 10:49:50 AM
.

The other wing is also a great choice, and if you don't mind how big it is,
it is a proven piece.


.

What wing did you have in mind? The original 3 piece big one?

No, I dont know the guy who has driven 200 mph....I think they ran it with nos at that time...

But IF I run fast now....like 150-160-170-180 mph....dont you think I need some sort of wing? Or can I drive without?

70RS/SS396
01-01-2012, 10:50:54 AM
The camaro I have now is a SFI 25,4 alston chassie :)

jeffrey10x2
01-01-2012, 10:54:04 AM
i would definitely put a wing on it , like the sportsman wing.
i ran one year without and one year with one, it definitely make a difference on down track stability

jeffrey10x2
01-01-2012, 11:03:26 AM
25.4: Full Bodied Car Tube Chassis 7.50 to 8.49 Seconds

trust me on this, if you run 200 mph, you will be a ton faster than 7.50

Cable Slacker
01-01-2012, 11:03:47 AM
do a search on horsepowerjunkies.com there is a guy running a 70 well over 200mph at the salt flats if a remember correctly,

mrdragster1970
01-01-2012, 11:05:27 AM
.

If it runs 170, you definitely need a wing.
I would think the one on Jeffery's car would be the easiest, least obtrusive.
Like I said, if you like the bigger race one, it will work great, and it looks cool on a 2nd gen.
I would not use the 3 piece because it's not adjustable, and has a lot of drag.
If you really really want a stock wing, then try the small one piece, but be prepared to lift if your ass moves.
At that weight and HP I can see it running 170, and that might be the limit for the small spoiler.
Again, I ran 160 and it was fine, a handful, but that was more from the small tire, crap hole track I raced at.
If you ever get better heads, N2O, boost etc. then you will probably want an adjustable wing.
Even on my car, I make a wing change depending on which engine I have in it.
At 175, it's damn near flat, at 213, it's probably 30* and that's with a 34.5 x 17 x 16.
Remember all you're trying to do is stop the lift.
When you start getting real fast, then you will need down force, you have enough tire for that engine.

.

70RS/SS396
01-01-2012, 01:30:38 PM
Is this sort of wings something I can use?
http://www.summitracing.com/parts/GRM-17-520/

http://static.summitracing.com/global/images/prod/large/grm-17-520_w.jpg

70RS/SS396
01-01-2012, 01:54:53 PM
Or maybe a wing like this.....this one I like a lot.

http://www.classicindustries.com/camaro/parts/sp90012.html

But it isnt adjustable.....

jeffrey10x2
01-01-2012, 02:02:30 PM
which ever one you get, make sure you can adjust it. you will be glad you did

mrdragster1970
01-01-2012, 06:24:31 PM
.

It sounds like you are trying to go as cheap as possible??
Take it from those of us that have done this a while.
DO NOT put that cheap crap on a race car.
The top wing says it's made of fiberglass and it's for show.
A race part would not be labeled as add style to your ride??
Quantity Sold individually.
Notes The wing itself is fiberglass.


Nothing shouts performance like Matrix Tech 9 Type-X universal wings.
These single-tiered aluminum wings feature adjustable, universal-fit bracket widths, to fit your vehicle and add style to your ride.

The 2nd is more sturdy, but again not adjustable.

Save the headaches, and maybe your car, get one of the two posted.
Like I said, these cars have a bad issue with lift because of the rear shape.

.

70RS/SS396
01-02-2012, 10:29:23 AM
.

It sounds like you are trying to go as cheap as possible??
Take it from those of us that have done this a while.
DO NOT put that cheap crap on a race car.
The top wing says it's made of fiberglass and it's for show.
A race part would not be labeled as add style to your ride??
Quantity Sold individually.
Notes The wing itself is fiberglass.


Nothing shouts performance like Matrix Tech 9 Type-X universal wings.
These single-tiered aluminum wings feature adjustable, universal-fit bracket widths, to fit your vehicle and add style to your ride.

The 2nd is more sturdy, but again not adjustable.

Save the headaches, and maybe your car, get one of the two posted.
Like I said, these cars have a bad issue with lift because of the rear shape.

.

No no, I dont need to buy a cheap wing. The Matrix wing...I didnt mean just that specific wing....I meant the style of wing.

And I can see the problem with the other wing when its not adjustable.

But the wing on the red car (al jimenez), what brand is it? Its looks really nice.

dwright406
01-02-2012, 10:36:05 AM
I think Al's car has an Ed Quay spoiler...

http://www.edquay.com/spoilers/gallery/index.html

MEAN_SBC
01-03-2012, 09:33:23 AM
It's also not a factory spoiler, it is adjustable, and he's doin what Mrdragster was talkin about of goin fast on a small tire.

It's also been down the track without the spoiler on it :crazy:

Edit, it's a 118mm and been 7.6x 192+....


ps. I think Brant has a fan club!


That's what happens when you drive across the country and forget the wing! LOL... :confused:

MEAN_SBC
01-03-2012, 09:36:22 AM
And I also went 171 mph with the stock tall spoiler on a 76 Camaro before I started running the blue car.

KylePBZ
01-04-2012, 10:13:31 PM
I think Al's car has an Ed Quay spoiler...

http://www.edquay.com/spoilers/gallery/index.html

His is custom, I asked him about it quite a while back.

S&W has a nice one. http://www.swracecars.com/store/70-81-CAMARO-SPOILER-KIT-OSCARItem_41=95-707.aspx

mrdragster1970
01-04-2012, 10:22:31 PM
.

That one is nice, definitely looks sturdy enough to do 170 plus!!
Again, I would use any of the 3 race wings posted over the 3 piece stock unit.
The stock one has to cost a couple of mph with all the drag??
Plus it's not adjustable.

.

70RS/SS396
01-05-2012, 04:51:23 PM
His is custom, I asked him about it quite a while back.

S&W has a nice one. http://www.swracecars.com/store/70-81-CAMARO-SPOILER-KIT-OSCARItem_41=95-707.aspx

That one looks nice!