4-Link Suspension Setup: Squat vs Separation for Drag Racing!

Wow! That really made a difference on the Barracuda. He almost stalled it! LOL! That was awesome!

Would the bottom angle on a caltrac bar on leaf spring be a similar set up .

Hey Kevin would the theory covered in this video also apply to a fbody torque arm suspension? I have an adjustable short chassis mounted torque arm, lcas & relocation, and cheap cheap competition engineering rear shocks on a 26 slick. Thanks!

Definitly one of yur best vidios .
Helping me understand what to do with my gasser drag car .
750hp stick .small tire .nose high gasser .leaf spring ladder bar .
Im always crushing the slick .then unloading the tire ...
It was really hard .to know where to locate the front mount on the ladder bar since Im so nose andfront end high .
From what Im understanding .I need to lower that front mount a couple holes ...and calm this thing down .
You vids are awsome

Thanks, that was good information.

Thank you. Good stuff!

Appreciate your input and willingness to post on these subjects. I will be testing my 4 cylinder fox body soon on 10” slicks. I set the engine forward and still have 51% rear bias. I’m going to try to get to slight AS separation. Once I get it close I’ll tag you on FB thanks again

Awesome video, love to see info like this on a leaf spring car

I have Modern IRS multi link and double wishbone cars and I learn so much from you. I still apply what I learn best I can. Thanks !

Looking great, Kevin! Great video, as always!

How about a video on solid mounted rearend like an altered?

I have been watching some videos showing local tracks typical weekend racing from the 60s and 70s. It was amazing how much the cars were separating the chassis. It’s like the whole car jumped straight up to the limit of suspension travel and then started moving forward. It seems like a lot of wasted motion and time but maybe this was what was required for the track prep and tires of the day.

another great lesson Thank you so much.

My big tire ladder bar bracket car works much better with a slightly uphill angle. The car separates a little with almost full loose rebound on the rear shocks. My 3 inch travel front shocks are full loose on rebound. With 12 pounds of air the tires don’t seem to crush the sidewalls all that much. Car just plain works. 900 hp BBC PG run 9 flat at 154 ish mph.

Thanks for the video! I've learned a ton! I made big improvements last year on just 2 trips to the track and looking forward to more this year. also congrats on the weight loss, I lost a 30lbs last year too and feel 100x better!

I haven't been able to find the procedure for finding the height of the center of gravity.

Thanks for the valuable information. What about tyre pressure? Is it involved? Weather for example if it’s cold or hot do I need to change tyre pressure. I will be much appreciated if you talk about tyre pressure. Thanks 🙏

This is great info for me! Thank you for doing these videos.

Another great video, I had our race car up on tire blocks measuring all the link bars. Now I got plots of every position and can sort them any way I want. I.e. %rise/squat, ic length, etc

Your looking good buddy. Great video great info. Thanks

ill try it on my s10

4 link

I would emphasize a point Kevin made... DO NOT get caught up in numbers! They are "guidelines" as a starting point, but in the end you have to give the car what it wants. Understanding how a 4 link works is a must before making changes. Take lots of notes, "I did this, and the car did that" to use for reference.

I will add, besides the bar setups, the same approach goes for shock settings. You hear guys say I'm 4 clicks on Compression & 6 clicks on Extension with XYZ shocks. That means absolutely nothing. Who valved the shocks, what's their chassis & 4 link setup doing, on & on. AND don't forget, your front struts/shocks have a big time affect how the 4 link setup works as well.

From ur experience. Where would u set up a stock style suspension foxbody on a 28” slick anti squat and IC Wise?

Good luck with your weight lose, good to see your car on the track.... But love these tech videos the most ...

Could you do a video on tire pressure and rear tire wrinkle.. how much and how long should it wrinkle

WOW! Great video Kev. I just subscribed.

Kevin, where does rear shock rebound setting come into play when setting the car up below the A/S line? What does it affect when you tighter or looser, when trying to bring more traction into play?

Well done

All these angles are relevant to bar length and such…? So what makes 10degree top bar angle a sweet spot. Wouldn’t that depend on bar length/ride height/chassis rake?

As always great information. Thanks again.

I can’t believe you didn’t draw that to scale. What a sham!

Question....My car goes straight and handles great unless I get into a fast wheel spin near the end of the track where it will kick quickly to the right every time. Would adjustments to get more weight on the right tires improve this I am thinking? Thanks in advance!

This is like going to school, but learning something that I care about!

Dam I need you..genius..

Great info

How to I get ahold of you when my topsportman car is ready for the track?

how much does this apply to a foxbody stock style suspension

Got any advice? I have a fiberglass 1997 Camaro that has a tube chassis it weighs 2424lbs with me (a 125lb stick) it’s a 17” wide tire bracket car and it doesn’t separate the rear end from the body enough so it spins right away then hooks, sometimes it spins hooks then spins or hooks and doesn’t spin or just spin hooks and doesn’t spin after, I need it to plant the tires faster and keep them planted but I’m changing the converter too because it is too tight

Where are you located kev

Awesome info Kevin. These videos are a lifesaver tremendous help I'm on my first build and it's all new to me. Thank you

Book by Dr. Peter J. D'Adamo, Eat Right For Your Type. Eat for your blood type. Eat it raw. Eat it organic. Eat it for your ailments. All four together results in weight distribution for your body.

Question every one says separate with drag radials ie Mickey Thompson but what about Hoosier drag radials? They are way softer sidewall than a Mickey I run 275/60 Hoosiers and the sidewall is literally paper thin wrinkle wall

This was a REALLY great "refresher" for me!! Even made me think a bit!
Thanks so much man!

Спасибо, что делитесь очень ценной информацией.

I've listened to your videos many times again and my knowledge on what the car needs has greatly improved. Took a car that I could only get low to mid 7s in 1/8th mile and now 6.50s with same engine. It pays to listen to someone who knows. Thanks Kevin!

Can you change the way your car reacts by just raising or lowering the ride height of the back of the car?