Topic: Truck rear spoiler

This may not be the right place to post this question so my apologies in advance if so...and I've done some searching thru the forums and haven't come up with much (my search skills prob suck fyi). We're taking our first stab at Lemons this March in Nola. We're close to finishing our LS swapped '98 S-10 and are thinking about running a rear spoiler to help keep the rear end planted...if that's even possible.

For those who have run rear spoilers on trucks, did you find it helped? Did the increase in straight line drag negate the benefits thru corners? Should we even bother, or just learn some loud pedal patience? lol

We have 2 trains of thought on the actual spoiler. I've seen a few cases of people pulling it off with piano hinges and turnbuckles for adjustability. Or a simpler route of some bent "L" brackets and thin gage sheet steel/aluminum. We'll be running a tonneau cover so we would be planning on mounting it to that.

Flame away...we're newbies so let's have it lol

Thanks guys!

LS-10 Racing '98 Chevy S-10
2022 Road Atlanta: LET'S F**KING DO THIS!!!, 2021 MSR: 19/101 (5/36 B-class) overheated transmission
2021 NOLA: 21/65 (6/25 B-class) snapped upper control arm, 2020 MSR: 73/103 (27/36 B-class) blown transmission

Re: Truck rear spoiler

Spoilers don't help cornering. You need proper downforce aero like a wing for that. Spoilers are for high speed stability. They keep your back end from developing lift and they help with air stream flow behind the vehicle which can REDUCE high speed drag.

Also be mindful of the fact that in a truck, the air downstream of your cab is a filthy mess. A wing won't even work low since it will just be in turbulent flow.

Just drive it first and find out where and how it's unstable then solve for that.

Mistake By The Lake Racing (MBTL)
88 Thunderbird "THUNDERBIRDS ARE GO!", Ex Astris, Rubigo / Semper Fracti
A&D: 2014 Sebrings at Sebring (NSF), 2014 NJMP2 Jurassic Park (SpeedyCop), 2012 Summit Point J30 (PiNuts)
2018 Route Sucky-Suck Rally Miata, 2019 World Tour Of Texas 64 Newport

Re: Truck rear spoiler

We have a spoiler on our truck buts it's just for looks.  Cornering is definently an issue. We dropped the back a little to get some weight transfer, but not much help.  Our biggest issue  cornering was terrible body roll and getting the diff to work in tight left handers.  I don't think the S10 had a rear sway bar.  The blazers do thought and are a easy swap, highly recommend.

1975 Chevy LUV.  1 Corinthians 13:7
1999 Chevy Blazer

Re: Truck rear spoiler

you'd probably do best to look at some NASCAR trucks. Of course you'd have to close the bed in. Leaving the tail gate up is better for air flow if you have nothing at all. Also perhaps something on the roof to guide the air down across the bed. See how they have side panels? FWIW spoilers DO help in the turns.
https://cdn.racingnews.co/wp-content/up … -truck.jpg

"get up and get your grandma outta here"

Re: Truck rear spoiler

https://24hoursoflemons.smugmug.com/Rac … -VZtLDr8/A


We went with the tonneau cover option as well.  we haven't run without the spoiler to know if it is actually beneficial or not.  We could probably benefit from taller support brackets.  I have thought about making a batch of flow-vis paint to see if we are getting air flow over the wing.

We have contemplated adding a shark fin to help with some lateral stability down the length of the bed.   If you want to have super corner stability add one of these

https://www.youtube.com/watch?v=FiG4Q8usVvg

1975 Chevy LUV.  1 Corinthians 13:7
1999 Chevy Blazer

Re: Truck rear spoiler

Huskar wrote:

https://24hoursoflemons.smugmug.com/Rac … -VZtLDr8/A

   If you want to have super corner stability add one of these

https://www.youtube.com/watch?v=FiG4Q8usVvg

And you can see how good they do as one of them wrecked in turn 1.....


No matter what you have it will do no good to over drive it.  Work on being a team, getting the truck to pass tech, and survive the race.

2020 I.O.E. CT #36 The Rootes Of All Evil,1958 Sunbeam Rapier Convertible (YES 1958!!) & 2019 Judges Choice NJMP
2016 Thompson Speedway #36 Sabrina Duncan's Revenge, IOE Trophy, 5th Place 'C' Class 1977 Ford Pinto
2009 Stafford Motor Speedway #16 Team Teflon, 11th Place (overall) 1997 Saturn SL2

Re: Truck rear spoiler

here's Race we did, Dakota at 2:20 no wing/spoiler S10 5:53 w/ wing. Both were slow but the S10 seemed to do better, less "whobble"
https://www.youtube.com/watch?v=GpZHzZYXhJQ&t=258s

"get up and get your grandma outta here"

Re: Truck rear spoiler

Huskar wrote:

https://24hoursoflemons.smugmug.com/Rac … -VZtLDr8/A


We went with the tonneau cover option as well.  we haven't run without the spoiler to know if it is actually beneficial or not.  We could probably benefit from taller support brackets.  I have thought about making a batch of flow-vis paint to see if we are getting air flow over the wing.

We have contemplated adding a shark fin to help with some lateral stability down the length of the bed.   If you want to have super corner stability add one of these

https://www.youtube.com/watch?v=FiG4Q8usVvg

RN WAY BUG
U HTA RN?

Mistake By The Lake Racing (MBTL)
88 Thunderbird "THUNDERBIRDS ARE GO!", Ex Astris, Rubigo / Semper Fracti
A&D: 2014 Sebrings at Sebring (NSF), 2014 NJMP2 Jurassic Park (SpeedyCop), 2012 Summit Point J30 (PiNuts)
2018 Route Sucky-Suck Rally Miata, 2019 World Tour Of Texas 64 Newport

Re: Truck rear spoiler

Thanks for the input. We have a test day coming up soon so we'll see what's what and go from there. Being our first event all we're really concerned with is getting thru tech (which we're confident about) and making it to the checkered flag. If we can check those 2 boxes it'l be a good weekend.

See y'all out there

LS-10 Racing '98 Chevy S-10
2022 Road Atlanta: LET'S F**KING DO THIS!!!, 2021 MSR: 19/101 (5/36 B-class) overheated transmission
2021 NOLA: 21/65 (6/25 B-class) snapped upper control arm, 2020 MSR: 73/103 (27/36 B-class) blown transmission

Re: Truck rear spoiler

Related question (sorry to jump on your thread):  If one were to mount a high wing (about the height of the cab roof) is it allowed to have the back of that wing be further rearward than the rear bumper?  The base of the wing supports would be bolted in the bed, near the axle.

Re: Truck rear spoiler

King 1 wrote:

Related question (sorry to jump on your thread):  If one were to mount a high wing (about the height of the cab roof) is it allowed to have the back of that wing be further rearward than the rear bumper?  The base of the wing supports would be bolted in the bed, near the axle.

There will be no problems with this as long as it's well secured.

Go big or go home!

Apocalyptic Racing - Occupy Pit Lane racing
Racing the "Toylet" Toyota Celica powered by Chevrolet Ecotec.
24x Loser with the Celica. 16x loser in other fine machines
Overall winner Gingerman 2019

Re: Truck rear spoiler

Brett85p wrote:
King 1 wrote:

Related question (sorry to jump on your thread):  If one were to mount a high wing (about the height of the cab roof) is it allowed to have the back of that wing be further rearward than the rear bumper?  The base of the wing supports would be bolted in the bed, near the axle.

There will be no problems with this as long as it's well secured.

Go big or go home!


How funny that you would be the one to answer... After I posted that I went looking thru Judge Phil's uber-gallery to see if I could spot anybody with a rearward protruding wing and it was your Toylet that I saw and thought, "those guys are doing it, must be ok"

Thanks!