SNW Vette

SNW Vette (Steve), I removed the dealership info and phone number from your post because our sponsors here pay for exclusive rights to post advertising and pricing on LS1Tech.com. Please have your dealership contact email me at ynot_dv8@hotmail.com if they are interested in becoming a sponsor here.

Thanks,
Tony Whatley

Hi,
Here are the part numbers and prices for '02 LS6 top end parts. Thanks to Tom & Bob at ------- Chevy (---) -------.

Head, PN 12564825, ~$ 615 /each
Intake valve, PN 12565311, $44.19/each
Exhaust valve, PN 12565312, $44.27/each
Valve spring, PN 12565313, $5.80/each
Intake stem seal, PN 12482063, $7.92/8
Exhaust stem seal, PN 12482062, $19.23/8
Valve key, PN 10166345, $0.49/each (same as LS1)
Spring cap (retainer), PN 10166344, $1.92/each (same as LS1)
All of the above is $2104.03 + shipping.

Head gaskets, PN 12573949, $15.34/each
Valve cover gasket, PN 12560696, $5.38/each
Water pump gasket, PN 12559271, $2.61/each (two needed)
Valley cover gasket, PN 12558178, $11.86
AIR gasket, PN12553617, $0.81/each (two needed)
Front cover gasket, PN 12558013, $6.53

Cam, PN 12565308, $222.75
Pushrods, (same as LS, 7.4 inches)

Head bolt, long M11, PN 12560744, $2.50/each (need 16) (same as LS1)
Head bolt, medium M11, PN 12560745, $0.81/each (need 4) (same as LS1)
Head bolt, short M8, PN 12558840, $1.26/each (need 10, but some people reuse these) (same as LS1)
Damper bolt, PN 12557840, $2.63 (same as LS1)

Other interesting things to know:
’02 LS6 valves have 0.8mm wall SS, 22% sodium-78% potassium filled exhaust and are longer by 0.6mm = 0.0236”
Intake: ’01 99 grams, ’02 76 grams or –23 grams
Exhaust: 86 vs. 63 or –23 grams

Springs:
All LS1 seat/open: 76/220; rate: 305; wire: round, chrome/silicon;
6200rpm cut-off
‘01 LS6 seat/open: 90/259; rate: 322; wire: oval, chrome/silicon/vanadium; 6600 cut-off, 6800-7000 float
‘02 LS6 seat/open: 90/294 (@ .551); rate: 370 info from Chevy, ~350 measured; wire: oval, chrome/silicon/vanadium; 6600 cut-off

The ’02 valve stem seals are a one-piece design. '01's use a shim under the valve, '02's have the shim integrated into the seal design.

I own these parts, but have not installed them in my C5 Coupe yet.
Have fun, go fast,
Steve

<img src="graemlins/z06.gif" border="0" alt="[Z06 Corvette]" />

[ February 04, 2002: Message edited by: Nine Ball ]</p>

DrkPhx

iTrader: (15)

[quote]
’01 Z06 springs use the same steel wire as LS1 but wound tighter for a higher spring rate.
All LS1 seat/open: 76/220; rate: 305; wire: round, chrome/silicon;
6200rpm cut-off
‘01 LS6 seat/open: 90/259; rate: 322; wire: oval, chrome/silicon/vanadium; 6600 cut-off, 6800-7000 float
‘02 LS6 seat/open: 90/294 (@ .551); rate: 370; wire: oval, chrome/silicon/vanadium; 6600 cut-off<hr></blockquote>

Your first sentence reads the LS1 and LS6 spring are same save for different winding (wrong), but then continues on describing how they are completely different (right). Just pointing it out.

SNW Vette

Hi,

"’01 Z06 springs use the same steel wire as LS1 but wound tighter for a higher spring rate. "

Thanks for checking me on that. It doesn’t make sense as you point out. Both of those statements came from Chevy PR info, but they obviously are not both true. I have also found a problem with the ’02 spring rate also. Chevy rates them at 370 lbs/inch but mine measured out at an average of ~350. Does anybody else have #'s on '02 LS6 springs?
Thanks again,
Steve

[ February 04, 2002: Message edited by: SNW Vette ]</p>