will cometic head gaskets work on 806 "notch" heads??
#1
will cometic head gaskets work on 806 "notch" heads??
I have a set of ported 806 heads that I put on my 6.0 lq4, I used GM mls gaskets and its leaking coolant. I had these same heads on my 5.3 with felpro mls gaskets with no problems. I didn't realize there was a difference between "cometic" mls gaskets and GM mls gaskets, I'm also not even sure if these felpro gaskets are cometic? They don't have the rubber lines around them like the GM gaskets do, and as far as I can tell that is the only difference between cometic mls and GM mls????
Does anyone have an explanation how these felpro gaskets could seal with the notched head casting while the gm mls leak?
edit: the gaskets I'm looking at getting are Fel-Pro 26192PT, heres a link to them on O'reillys website
http://www.oreillyauto.com/site/c/de...eyword=26192pt
Does anyone have an explanation how these felpro gaskets could seal with the notched head casting while the gm mls leak?
edit: the gaskets I'm looking at getting are Fel-Pro 26192PT, heres a link to them on O'reillys website
http://www.oreillyauto.com/site/c/de...eyword=26192pt
#2
TECH Resident
iTrader: (20)
The GM MLS gaskets do not work with the notched 806 & 853 heads, graphite gaskets for sure and I have heard cometics with copper spray on both sides work as well. That being said, you could have them milled down to remove the notch so they will seal with MLS, imagine it would take close to .030 to remove the notch.
#3
The GM MLS gaskets do not work with the notched 806 & 853 heads, graphite gaskets for sure and I have heard cometics with copper spray on both sides work as well. That being said, you could have them milled down to remove the notch so they will seal with MLS, imagine it would take close to .030 to remove the notch.
Does anyone know if these fel-pro gaskets I listed above are cometic?
#5
I gotcha bud, totally missed that...I was tired. Those are MLS and composite.
https://ls1tech.com/forums/16571130-post5.html
https://ls1tech.com/forums/16571130-post5.html
#7
I ran mls on 806 heads on my 6.0 and got lucky. I am taking these 806 ported heads with 2.02 valves to be milled .030 . Any info on pushrods mods? Or does the lifter compensate for the milling?sorry forgot to say I'm putting them on a 04 5.3