LS1FREEK

iTrader: (1)

I have a 98 Vette with them factory crappy *** 806's, lol, and I bought a set of BARE 243's. Well I want to swap the valves from my 806's, as far as I know, they have the same size?

02*C5

iTrader: (1)

I think that the valve runners on the 243/799 are a tad bit longer to accommodate the LS6 valves. You can't run the LS6 valves on any other head because they are a little longer than regular length valves. Do little more research before doing the change over.

If am wrong some one will correct me.

LS1FREEK

iTrader: (1)

Hmm... That makes sense...

Anyone else?

LS1FREEK

iTrader: (1)

Ok, I read somewhere on another site, that the Ls6 valves are approximately .023" longer. Does this mean that the entire valve sits closer to the deck keep the same valve stem height as a regular ls1 head, or are the valve stems sitting .023" taller? If so, that would explain why the Ls6 cam has a smaller base circle and still run 7.4" pushrods...

LS1FREEK

iTrader: (1)

TTT... Someone's gotta know...

HAZ-Matt

iTrader: (8)

If I remember correctly, only the 02+ hollow and sodium valves are actually longer than the LS1 valves. That was in fact so they could shrink the base circle more while keeping what they considered good rocker geometry.

The 01 LS6 and LS2 valves are the same as the LS1 valves, as in same part number and everything:

Intake: 12563063
Exhaust: 12563064

SSmoked1

iTrader: (21)

qygda

TA6spdRDC

iTrader: (2)

i have a set of 853s and a set of 243 none ls6 heads and i took the valves out of both sets of heads and they look the exact same size.

LS1FREEK

iTrader: (1)

Cool, thanks for the info guys!

mamead

iTrader: (3)

So I am still confused. I have 806 heads on my 98 T/A. I am planning to swap over to 243's this winter/spring. If the 243's are bare, I'd HAVE to buy new longer intake and exhaust valves to work and could not just swap them from the 806's over to the 243's?

LS1FREEK

iTrader: (1)

Negative, if you swap the valves from your 806's to the 243's, your valvetrain geometry will be exactly the same as the 806's originally were. If you were to take a set of the hollow/sodium filled LS6 valves and put them into the 243's, you would need shorter pushrods.