-
Senior Member
Ride Height
The manual states that the ride height in the front is 4.5" in the front and 5" in the rear. It then states measured from ground to chassis. Is that at the chassis box or the lowest point of the chassis at the front of the car and the highest point of the chassis at the rear of the car?
Thanks
33' Hot Rod Coupe/Roadster (GEN 1), Fendered, Ford 302, 350hp, EFI, AOD, 4-Link, Double Adjustable Koni Coilovers, Split Rear Exhaust, Electric Power Steering, AC/Heat/Defrost, Moser 8.8"-3.55, Willwood Front/Rear Brakes, 18" x 8" Fronts/20" x 10" Rears, Ordered: 1.26.17, Arrived: 3.29.17, First Start: 7.2.18, Go Cart: 11.4.18 Paint/Body: 2.23.19, Back Home: 11.24.19, Completed: NEVER!; View More Pics @
https://starmobileone.com/
-
Moderator
Of course, it's kind of a dumb measurement to quote (even that rake), since the wheels/tires you choose can alter the ride height significantly. So.. it doesn't really matter what you start at, as long as it's consistent side-to-side and you're happy
James
FFR33 #997 (Gen1 chassis, Gen2 body), license plate DRIVE IT says it all!
build thread
My build: 350SBC, TKO600, hardtop, no fenders/hood, 32 grill, 3 link, sway bars, 355/30r19
Previous cars: GTD40, Cobra, tubeframe 55 Chevy, 66 Nova, 56 F100
-
Post Thanks / Like - 1 Thanks, 0 Likes
JOP33 thanked for this post
-
I think it is from the 4 corners of the cab structure before it starts to bend upward, front or rear. Yes, wheels and tire matter, but isn't height still height from ground?
Ralph
-
Just + or - the height difference from FFR tires to the ride height.
-
Senior Member
Originally Posted by
JOP33
The manual states that the ride height in the front is 4.5" in the front and 5" in the rear. It then states measured from ground to chassis. Is that at the chassis box or the lowest point of the chassis at the front of the car and the highest point of the chassis at the rear of the car?
Thanks
Its measured at the four corners under the four corners of the main frame under the seating/cab area. As mentioned below what is in the manual is a guide. I found that my rear shocks were wrong and once I installed the correct ones my front measurement is ~6" and the rears are at ~7-5/8". It has a nice rake now.
20181208_185822[1].jpg 20181208_190654[1].jpg
These were recently taken, its hard to see but its a nice rake now.
-
Consummate Learner
Originally Posted by
AJT '33
That sits nice! What are your wheel/tire specs?
-- Mike -- TxMike64 -- @TxMGarage
Gen1.5 Hot Rod '33 #1094 (Stage 1) - 302/AOD '15 IRS - Quad Built - Build Thread
-
Senior Member
Originally Posted by
TxMike64
That sits nice! What are your wheel/tire specs?
Front: Wheels PhatFUX 18x9 with Nitto 555 G2 245/40ZR18 Tires
Rear Wheels PhatFUX 18x10 with Nitto 555 G2 295/40ZR18 Tires
One cool thing is my tire guy installed flush air valves. As well I needed to add in 21mm spacers as well for clearance with this setup due to the backspace.
20180504_140855.jpg 20180426_184745.jpg
-
Consummate Learner
Thanks!
That front/rear size combo looks great! The rear tires do indeed look phat!
-- Mike -- TxMike64 -- @TxMGarage
Gen1.5 Hot Rod '33 #1094 (Stage 1) - 302/AOD '15 IRS - Quad Built - Build Thread
-
Senior Member
Originally Posted by
TxMike64
Thanks!
That front/rear size combo looks great! The rear tires do indeed look phat!
Now that I have the correct rear shocks I could have gone an up to an inch wider if I wanted.
-
Yes, measure from 4 corners but the 4 1/2" and 5" was way to low for mine. I think i am at 6" rear and 5 1/2" front
20180422_140653 (1).jpg
-
Seasoned Citizen
If you're going for a cool looking stance and not concerned about handling, then set your ride height where it looks best and still has reasonable road hazard clearance. But if handling is important to you just realize setting ride height arbitrarily will likely have adverse handling effects. And I'm not just talking about center of gravity changes.
Changing ride height in the front affects roll center and lateral weight transfer (also affects rear roll center on IRS cars) but changing rear ride height on a solid axle car can change your instant center which affects acceleration / braking traction. Not considering this can make a car harder to hook or easier for the rear tires to lock on hard braking -- a real problem when hard braking in a corner or picking up the throttle on corner exit.
It can also create roll steer, a very annoying trait. As the car leans in a corner (weight transfer) the rear axle is skewed and results in an uncommanded turning input, the direction is dependent on which way the LCAs are angled. When you're done setting your rear ride height measure the angle of the LCA and if they are not parallel to the ground you have just induced roll steer. The degree of which is dependent on the amount of angle -- more angle = more roll steer. So you should really consider how your ride height adjustments are affecting handling. Ideally you want the LCAs parallel to the ground. Drag racers will many times set these with the front angled uphill to adjust instant center higher to adjust anti-squat but corner handling is not a priority to them.
Dart Little M 406" SBC 800 HP N/A & 1,100 HP on nitrous, 2-spd Powerglide with trans brake, 6,000 RPM stall converter, narrowed Moser 88 3.90:1 spool with 35-spline gun-drilled axles & Torino bearings, custom parallel four-link, custom tube chassis & roll cage NHRA certified for 8.5-sec (only two FFR Hot Rods have this cert).
33 Hot Rod Super Pro Drag Racer Build:
33 HR NHRA Cert Roll Cage Build