stock valve spring specifications
Thread Starter
Pro
Joined: Jun 2003
Posts: 624
Likes: 7
From: St. George, UT
stock valve spring specifications
Where can I find the stock valve spring specs on a 2002 Z06? I want to compare with aftermarket springs. I want to replace with something close. (already broke one). However I don't want to over stress the rest of the valve train with a heavier spring. 
I don't plan on a cam or other mods in the future...... just want to fix the bad springs. (thanks GM 
) Any input is appreciated 
I don't plan on a cam or other mods in the future...... just want to fix the bad springs. (thanks GM ) Any input is appreciated
Instructor
Joined: Feb 2005
Posts: 242
Likes: 2
From: Mims Florida
2002 Z06 valve springs
GMPP CATALOG 2008
"12499224
LS Valve Spring Kit (not shown)
• Beehive style springs
• 1.800" installed height @ 90# pressure
• 1.250" @ 295# pressure
• Used on LS2/LS6 cylinder heads
• Max lift .570"
• Includes 16 of P/N 12586484 "
http://www.summitracing.com/parts/NAL-12499224
I am pretty sure the 2002 springs were the same spec but different part number than these 2004.
"12499224
LS Valve Spring Kit (not shown)
• Beehive style springs
• 1.800" installed height @ 90# pressure
• 1.250" @ 295# pressure
• Used on LS2/LS6 cylinder heads
• Max lift .570"
• Includes 16 of P/N 12586484 "
http://www.summitracing.com/parts/NAL-12499224
I am pretty sure the 2002 springs were the same spec but different part number than these 2004.
