9 bolt iron caliper springs different???
Thread Starter
Supreme Member
iTrader: (1)
Joined: Sep 2010
Posts: 1,928
Likes: 1
From: Georgetown TX
Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
9 bolt iron caliper springs different???
I pulled apart my 9 bolt iron calipers and found the large piston springs are different. One is 3.25 inches and the other 4 inches in length and the shorter one feels stiffer. Is this normal? Is one correct and the other not? Does it matter which side they go on? Everything else looks identical between the two.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: 9 bolt iron caliper springs different???
I pulled apart my 9 bolt iron calipers and found the large piston springs are different. One is 3.25 inches and the other 4 inches in length and the shorter one feels stiffer. Is this normal? Is one correct and the other not? Does it matter which side they go on? Everything else looks identical between the two.
JamesC
Thread Starter
Supreme Member
iTrader: (1)
Joined: Sep 2010
Posts: 1,928
Likes: 1
From: Georgetown TX
Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: 9 bolt iron caliper springs different???
They looked original too. Does the catalog give the dimensions of the 'standard' one?
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Moderator
Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: 9 bolt iron caliper springs different???
One is the spring from the old, flawed design, and one is from the new, "fixed" design.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: 9 bolt iron caliper springs different???
Info/pics below that might be helpful:
http://www.flynbye.com/catalog/i208.html
The GM part number listed in the link is still good at GMPartsDirect if you have need.
JamesC
Last edited by JamesC; Jan 24, 2012 at 12:23 PM. Reason: Additional Info
Thread
Thread Starter
Forum
Replies
Last Post
ambainb
Camaros for Sale
11
Apr 25, 2016 09:21 PM
Eric-86sc
Engine/Drivetrain/Suspension Parts for Sale
3
Apr 3, 2016 03:52 PM
sailtexas186548
Engine/Drivetrain/Suspension Parts for Sale
8
Jan 19, 2016 12:21 PM
