Hate to bring up such an old thread, but Google brought me here and it seems I've run into the same debate everywhere else I go
I have a 69 Road Runner with OEM replacement springs and I recently installed a pair of helper springs to adjust ride height.
Put her up on my flat lift a couple days ago and came up with these readings on my angle meter.
(All readings taken from the driver's side)
Output Shaft -1* (trans pointed down towards rear of car)
Drive Shaft -1* (drive shaft pointed down towards rear of car)
Pinion +2* (pinion pointed down towards front of car)
It's a street/strip car that normally rides on skinny G15 red lines for daily driving, but wears huge 29x12.5 meats on the weekends.
Trying to decide on what shims I should use, but I keep getting conflicting opinions
Some say 5* down for a street car and 7* down for a track car.
Here are a couple of videos showing what kind of spring wrap I'm dealing with...
https://www.youtube.com/watch?v=xlBh3DgIaMghttps://www.youtube.com/watch?v=o_SMZMKFEAQWhat shims would you suggest?
