Need Help with a FEW RPO's (84 T/A)
Member
Joined: Jan 2006
Posts: 154
Likes: 0
From: Whitehouse, Ohio
Car: 1987 Pontiac Trans Am
Engine: 305 LB9 Tuned Port Injection
Transmission: 700-R4 Automatic
Axle/Gears: Saginaw 10 bolt 2.73 posi
E6N- Speedometer (delete)
WS3- Performance Value Package
6UM- front left hand spring
7UJ- front right hand spring
I got these from an older GM RPO decoder. The speedometer delete doesn't make sense, but the 6UM and 7UJ where among a list of front springs. I imagine they signify different spring rates or suppliers. The only listing I got for WS3 was for 1987, so I'm not sure what WS3 was in 84.
WS3- Performance Value Package
6UM- front left hand spring
7UJ- front right hand spring
I got these from an older GM RPO decoder. The speedometer delete doesn't make sense, but the 6UM and 7UJ where among a list of front springs. I imagine they signify different spring rates or suppliers. The only listing I got for WS3 was for 1987, so I'm not sure what WS3 was in 84.
Supreme Member
Joined: May 2001
Posts: 1,705
Likes: 3
From: Washington
Car: Recaro Option T/A
Engine: 305 Tuned Port Injection
Transmission: Automatic
Axle/Gears: 3:27 Borg Warner
Once a car's buildsheet was determined, the weight of options in the car were calculated and a computer program selected the approriate springs based on the weight and position, thats why you see so many vaiations of spring RPO's.
Last edited by 85 T/A WS6; Jan 25, 2007 at 02:30 PM.
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