Head gaskets options for 4.030 bore?
01-12-2004, 08:56 AM
#2
? ? ? ? ? ?
iTrader: (16)
Join Date: Nov 2001
Location: East of Dallas
Posts: 7,056
Likes: 0
Received 0 Likes
on
0 Posts
It looks like the 6 liter GM MLS gasket has a 4.04 diameter. Several people have measured this. I'm not sure what diameter the older graphite GM 6 liter gasket is. Compressed, I think the MLS is .054, but it could be .060, not sure. The MLS gasket should have a 11.33 volume with a .054 compressed thickness.
The FelPro 1041 LS1 gasket is a good choice. It has a 4.1" bore and a .043 compressed thickness. This gasket has a volume of 9.30. Thats at least 2cc less than the GM gasket for more compression.
The FelPro 1041 LS1 gasket is a good choice. It has a 4.1" bore and a .043 compressed thickness. This gasket has a volume of 9.30. Thats at least 2cc less than the GM gasket for more compression.
I found a FelPro part number of 9199PT for the 6.0L application
01-12-2004, 09:20 AM
#4
? ? ? ? ? ?
iTrader: (16)
Join Date: Nov 2001
Location: East of Dallas
Posts: 7,056
Likes: 0
Received 0 Likes
on
0 Posts
I think the felpro 9199 is their version of GMs graphite gasket. The 1041 is a FelPro brand, but it says its for LS1s. I assume its their big bore LS1 gasket. It is MLS. The 1041 is more expensive than the GM gaskets, but not near as costly as the cometics.
