Installing aftermarket boxed rear trailing arms is an effective suspension mod that most car crafters can do themselves-it's very common on rear-coil-sprung GM cars such as A- and G-bodies from '64-'88. But as basic as this upgrade is, there is some stuff to consider that the instructions don't talk about. Recently, we installed a set of PST lower rear trailing arms on an '87 Buick Grand National (a GM G-body), and here we'll tell you what the instructions don't. The arms themselves are different for the late-model A- and G-bodies than they are for the '64-'72 A-body cars (Chevelles, Skylarks, and such), but the installation procedure is very similar. It's also the same for the arms from the many companies that sell 'em.
Tools You'll Need
• A buddy to help out
• End wrenches (14mm, 18mm, 3/4-inch)
• Floor jack
• hiGh-temp grease
• 3/8-inch ratchet
• Rubber mallet
• Shop towels
• 6-inch-long ratchet extension
• Small block of wood
• Sockets (14mm deep, 8mm shallow, 3/4-inch shallow)
• Torque wrench
• Two jackstands
Stuff You'll Need to
Buy
Item
Source
Price
(2) lower trailing arms
PST
$249.00 pr.
NicSand 100-grit sandpaper
Chief Auto Parts
$2.99
Sta-Lube hi-temp grease
Chief Auto Parts
$2.99
(1) roll Scott ShopTowels
Chief Auto Parts
$1.99
Total: $256.97
