DEEP SOURCE PASS · 2026-07-20
DATA GRADE A

GRT Race Cars

4-link Super Late Model (2008–2015 basic models sheet). Numbers below come from public manufacturer sheets or sanction rulebooks. We do not invent missing values.

Wheelbase

VALUE
103–105" series envelope
Industry Super LM rule envelope — GRT sheet does not print a unique chassis WB
Lucas Oil / Super LM rules

Published geometry & baseline numbers

Panhard length
19¼" center-to-center
GRT 2015 Late Model Standard Car Set-Up Sheet
Panhard frame bracket
8⅜" bottom of frame → bottom of bracket
GRT 2015 Late Model Standard Car Set-Up Sheet
Panhard start notches
3rd up chassis / 2nd up pinion
GRT 2015 Late Model Standard Car Set-Up Sheet
Upper A-arm lengths
LF 10½" / RF 8¼"
GRT 2015 Late Model Standard Car Set-Up Sheet
Tie rod LF
16½"
GRT 2015 Late Model Standard Car Set-Up Sheet
Caster baseline
LF 2+ / RF 4+ (sheet)
GRT 2015 Late Model Standard Car Set-Up Sheet
Camber baseline
LF 3+ / RF 4− (sheet)
GRT 2015 Late Model Standard Car Set-Up Sheet
Toe
½" long tracks · ¾" short/tight (or ¼–½ out on alt block)
GRT 2015 Late Model Standard Car Set-Up Sheet
Scale targets
Bite 150 lb · left 52.5% · rear 55% (20 gal + 200 lb driver)
GRT 2015 Late Model Standard Car Set-Up Sheet
RR ride height ref
12½" bottom top frame → top axle tube
GRT 2015 Late Model Standard Car Set-Up Sheet
4-bar hole angles (std)
LL 3rd up 6–7° · LU 7th 23–25° · RL 4th level · RU 5th 18–20°
GRT 2015 Late Model Standard Car Set-Up Sheet
Limiter chain drop
17¾" tube→frame fully extended
GRT 2015 Late Model Standard Car Set-Up Sheet
RR lead
Right rear back ¼–⅜"
GRT 2015 Late Model Standard Car Set-Up Sheet
GRT coaches roll/side bite via panhard height notches + 4-bar angles — not a single RC height dimension on the public sheet.

Primary sources

· GRT 2015 Late Model Standard Setup Sheet
· GRT setup help index
· GRT Adjustment Guide
Always verify against your exact year chassis and series rulebook. Setup sheets change by year.
LOAD INTO GARAGE
Interactive mid-window card
ELDORA DEMO → PREFILL CHASSIS

Manufacturer correction

If a number is wrong for a specific year, email the correction with a sheet PDF. We will update grade and sources.

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