GRT RACE CARS LATE MODEL SET-UP SHEET
(Feel Free to Print Out)

NEW INFORMATION FOR 2008!!!
RIDE HEIGHTS: (2008 1/2 Front End Chassis #2966 and Up, Black Spindles)
LF: 3 1/8" Top of Lower Control Arm (16 5/8") & Bottom of Frame
RF: 3 1/8" Top of Lower Control Arm (18 1/8") & Bottom of Frame
LR: Will be Set with the Amount of Bite
RR: 12 1/4" Bottom of Top Frame to Top of Rear End Axle Tube (Overrail)

FRONT END ALIGNMENT FOR 2008 1/2 FRONT END:
CASTER
LF: 2+
RF: 4+

CAMBER
LF: 3+
RF: 4-

UPPER A-ARM LENGTHS:
LF: 10 1/2"
RF: 8 1/4"

TIE-ROD LENGTHS:
LF: 16 1/2"
RF: Determined When Setting Toe

ADDITIONAL INFO:
* Toe needs to be 1/2" for long tracks and 3/4" for short tracks with tight corners. *
* Requires clevis style rack to set bump. Contact GRT for bump specs! *

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OLDER INFORMATION...
RIDE HEIGHTS: (Standard Front End, Black Spindles)
LF: 3" Top of Lower Control Arm & Bottom of Frame (2.5" on Cars with Gray Spindles)
RF: 3" Top of Lower Control Arm & Bottom of Frame (2.75" on Cars with Gray Spindles)
LR: Will be Set with the Amount of Bite
RR: 4.25" Top of Lower Underslung & Bottom of Axle Tubes
3" on Older Cars with Angled Underslung Bar
12.25" on Overrail Cars (Bottom of Frame to Top of Axle Tube)

SPRINGS:
LF: 500# RF: 375#
LR: 250# behind RR: 225#

SHOCKS:
LF: 75 RF: 75
LR: 6-2 gas (9-3 std.) RR: 94
IMPORTANT SHOCK & SPRING NOTE:
(Right Front 76 Shock is recommended for high-banked, fast tracks to help increase side bite and help car turn)
(Soften Right Front Spring as low as 300# on smooth, slick tracks - soften in 25# increments)

BITE:
150 lbs.
Left Side: 52.5%
Rear: 55%
Based on 20 gallons of fuel and a 200 lb. driver

TORQUE ARM:
73-6 Shock with 300# Spring
Approximately 3" Travel on 36" Center to Center

REAR END LEAD:
Right Rear Back 1/4" to 3/8"

FRONT END ALIGNMENT:
CASTER
LF: 1.5+
RF: 3+
TOE: 1/4 to 1/2 Out

CAMBER
LF: 2+
RF: 3.5-

NEW STYLE PANHARD BAR BRACKET:
Bottom of Frame to Bottom of Bracket (8 3/8")
3rd Notch Up on Chassis, 2nd Notch Up on Pinion
Panhard Bar: 19.25" Center to Center

4-BARS (STANDARD)
Left Lower: 3rd Hole Up (6 to 7 Degrees)
Left Top: 7th Hole Up (23 to 25 Degrees)
Right Lower: 4th Hole Up (Level)
Right Top: 5th Hole Up (18 to 20 Degrees)
IMPORTANT 4-BAR NOTE:
(Lower RR Bottom Rod to Tighten Up on Entry)
(Raise RR Top Rod to Help Car Turn)

USING LONG LEFT LOWER 4-BAR (4" LONGER)
Left Lower: 5th Hole Up (10 Degrees)
Left Top: Upper Hole (30 Degrees)
Left Lower Degrees when Changing:
4th Hole (7 Degrees)
6th Hole (12.5 Degrees)
7th Hole (15 Degrees)
IMPORTANT 4-BAR NOTE:
(Must Reduce LR Bite from Standard 150 lbs. to 75 lbs.)

ADDITIONAL NOTES OF INTEREST:
* Car will have as much drive or more with bar angle, but be smooth and consistent with longer lower bar because it also makes the car tighter on entry. *
* If car has too much drive: drop upper bar 1 hole and continue on alternating between top bar and bottom bar 1 hole down at a time, until desited drive is obtained. NOTE: The longer lower 4-bar also is more drivalbe in tacky and rough conditions. *
* Indexing increases instant traction and turning capabilities, but does not maintain forward traction as long. Smoother throttle application is a necessity when indexing. *
* Using shorter LR lower rod usually works best in rubber conditions where the car needs traction and turning capablities. *
* Indexing is not recommended in most slick track applications. *
* The Limiter Chain is now used to prevent rearend from traveling too much or being too erratic. It is recommended that you run the chain at all times. This lets the LF maintain maximum traction and keeps LR from traveling too far. Where as a dummy shock takes away traction and therefore should only be used in a traction situation. *
* 90/10 Shock should not be used unless car is extremely loose on entry. Use 73-6 or 73-7 on torque arm. *
* 90/10 Shock reduces forward traction and transfer that promotes side bite *

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