08-13-2004, 06:31 PM
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CC Member
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Join Date: Dec 2000
Location: Austin, TX, US,
TX
Cobra Make, Engine: Exact427
Posts: 70
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Not Ranked
Front and Rear Track, 427 ARE ALL BOOKS WRONG?
What is the actual track of the 427 Competition cars?
What is the track of the Kirkham 427?
NOTE: Its easiest to measure the hub mount face to hub mount face and add the wheel offset(s) to eliminate all sorts of measuring errors.
FYI, the track is the distance between the centerline of the wheels (or tires) with the caster and chamber set to zero (otherwise you get different readings depending where you pull the numbers).
Most books and advertising literture show 56" front and 58" rear.
Some books show 56" front and 56" rear.
"Cobra 427 Chassis Instruction Book" shows 53.96" front and 55.125" rear (53" street).
Street cars have different "depth" rear hubs and thus you need to change these to properly fit "competition" width rear wheels.
Trigo and Halibrand wheels have a 1.4375 offset on the front and 1.6875 on the rear (centerline outboard of mounting face)
BEST I CAN MEASURE, MY KIRKHAM DOES NOT MATCH ANY OF THE ABOVE?????? (using hub to hub and adding wheel offsets)
WHAT's THE REAL STORY?
Thanks,
Roger
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