Looking for a C5 suspension chart
Thread Starter
Team Owner
Joined: Sep 2003
Posts: 20,179
Likes: 673
From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Looking for a C5 suspension chart
Hib Halverson developed this chart on the C4 Tech section.
It lists all the different springs and bars available during C4 production.
Anyone have a link to something similar for the C5?
It lists all the different springs and bars available during C4 production.
Anyone have a link to something similar for the C5?
Melting Slicks
Joined: Jun 2002
Posts: 2,246
Likes: 66
From: Middletown CT
Here is some info that I collected from various threads. I cannot guarantee it is 100% accurate. Some is GM some is aftermarket.
23mm, front; 19.1mm, rear --- FE1/Base
25.4mm, front; 21.7mm, rear --- FE3/Z51 97-99
28.6mm, front; 23.6mm, rear --- FE3/Z51 00-04
30.0mm, front; 23.6mm, rear --- FE4/Z06
31.75mm, front; 25.4mm, rear --- Hotchkis
31.75mm front; 2.54mm rear ---Addco (1 1/4” f/1” r) hollow
34.75 mm front; 2.54mm rear ---Addco (1 3/8” f/ 1” r) hollow
38.4mm, front; 27.5mm, rear --- GM T1
Swaybars:
C5 Base Suspension: 23 mm-front / 19.1 mm-rear / 3.81mm/2.0mm thickness
C5 Z51 (97-99): 25.4 mm-front / 21.7 mm-rear
C5 Z51 (00-04): 28.6 mm-front / 23.6 mm-rear / 4.15mm/3mm thickness
C5 Z06: 30.0 mm-front / 23.6 mm-rear / 4.5mm/3.5mm thickness
C6 Base: 25.5 mm-front (1”) ?? / 22.0 mm (7/8") ?? or 17.5mm (3/4”)-rear ??
C6 Z51: 31 mm-front / 25.4 mm (1")-rear
C6 Z06: 31 mm-front / 28.8 mm-rear
C5 Hotchkis: 31.75 mm-front / 25.4 mm-rear / 4mm/4mm thickness
C5/C6 Addco: 32 mm-front / 25.4 mm-rear
C5/C6 Addco: 35 mm-front / 25.4 mm-rear /5.7mm/4mm (approx. thickness measurements)
C5 Pfadt (Adjustables): 32 mm-front / 26 mm-rear
C5 Pfadt (Adjustables): 35 mm-front / 28.5 mm-rear (Pfatty)
C5 T1 (GM Racing): 38.4 mm-front / 27.5 mm-rear / 6.35/6.35 thickness
C6 T1 (GM Racing): 38.4 mm-front / 27.5 mm-rear / 6mm/?? thick
Springs:
• C5 Z06: 526# Front, 714# Rear
• C6 Z06: 531# Front, 782# Rear
• C6 Z51: 526# Front, 645# Rear
• T1 (C6): 582# Front, 850# Rear
• C6 Base: 420# Front, 657# Rear (VBP: 400-420 F / 600-620 R)
• T1 (C5): 582# Front, 793# Rear
• Pfadt Coil-overs: 425# Front, 575# Rear (Remember: Wheel rates!)
• Hyperco HPS (Street): 565# Front (12405HPS), #765 Rear (12406HPS)
• Hyperco HPT (Track/Solo): 625# Front (12407HPT), #850 Rear (12408HPT)
• VBP Sport 990# Front, 650# Rear
• VBP Extreme 1050# Front, 855# Rear
23mm, front; 19.1mm, rear --- FE1/Base
25.4mm, front; 21.7mm, rear --- FE3/Z51 97-99
28.6mm, front; 23.6mm, rear --- FE3/Z51 00-04
30.0mm, front; 23.6mm, rear --- FE4/Z06
31.75mm, front; 25.4mm, rear --- Hotchkis
31.75mm front; 2.54mm rear ---Addco (1 1/4” f/1” r) hollow
34.75 mm front; 2.54mm rear ---Addco (1 3/8” f/ 1” r) hollow
38.4mm, front; 27.5mm, rear --- GM T1
Swaybars:
C5 Base Suspension: 23 mm-front / 19.1 mm-rear / 3.81mm/2.0mm thickness
C5 Z51 (97-99): 25.4 mm-front / 21.7 mm-rear
C5 Z51 (00-04): 28.6 mm-front / 23.6 mm-rear / 4.15mm/3mm thickness
C5 Z06: 30.0 mm-front / 23.6 mm-rear / 4.5mm/3.5mm thickness
C6 Base: 25.5 mm-front (1”) ?? / 22.0 mm (7/8") ?? or 17.5mm (3/4”)-rear ??
C6 Z51: 31 mm-front / 25.4 mm (1")-rear
C6 Z06: 31 mm-front / 28.8 mm-rear
C5 Hotchkis: 31.75 mm-front / 25.4 mm-rear / 4mm/4mm thickness
C5/C6 Addco: 32 mm-front / 25.4 mm-rear
C5/C6 Addco: 35 mm-front / 25.4 mm-rear /5.7mm/4mm (approx. thickness measurements)
C5 Pfadt (Adjustables): 32 mm-front / 26 mm-rear
C5 Pfadt (Adjustables): 35 mm-front / 28.5 mm-rear (Pfatty)
C5 T1 (GM Racing): 38.4 mm-front / 27.5 mm-rear / 6.35/6.35 thickness
C6 T1 (GM Racing): 38.4 mm-front / 27.5 mm-rear / 6mm/?? thick
Springs:
• C5 Z06: 526# Front, 714# Rear
• C6 Z06: 531# Front, 782# Rear
• C6 Z51: 526# Front, 645# Rear
• T1 (C6): 582# Front, 850# Rear
• C6 Base: 420# Front, 657# Rear (VBP: 400-420 F / 600-620 R)
• T1 (C5): 582# Front, 793# Rear
• Pfadt Coil-overs: 425# Front, 575# Rear (Remember: Wheel rates!)
• Hyperco HPS (Street): 565# Front (12405HPS), #765 Rear (12406HPS)
• Hyperco HPT (Track/Solo): 625# Front (12407HPT), #850 Rear (12408HPT)
• VBP Sport 990# Front, 650# Rear
• VBP Extreme 1050# Front, 855# Rear
