Best Head Gasket for FI 346 with 241 heads. MLS LS1? LS9?
10-11-2010, 06:59 PM
#1
Best Head Gasket for FI 346 with 241 heads. MLS LS1? LS9? Building a basic forged 346 for an FI build. Will be running an A&A intercooled T-trim setup on a C5. Would like to make 10-12 psi. This will be an 02 Ls6 block and I have a set of nice CNC'd 241 heads with 2.055. 1.57 valves. Would like to run these of course with ARP head studs. Motor will be 9.3:1 with these 66cc heads and my 11cc dished pistons.
What head gasket is best for my app. Dont really want to go o-ring'd heads or block. Want a bolt on and go solution. I would like to run these heads as I already have them. Would have them freshly surfaced. I know they aren't thick deck heads. What do you think?
I keep hearing about these LS9 head gaskets on the Zr1. These are a 7 layer MLS gasket. Can I use these on a 3.903 bore? Or should I stick with an 02+ MLS LS1 gasket?
What is the best for my app? I dont want to half *** this or do it over.
What do you all think?
Thanks
Steve
What head gasket is best for my app. Dont really want to go o-ring'd heads or block. Want a bolt on and go solution. I would like to run these heads as I already have them. Would have them freshly surfaced. I know they aren't thick deck heads. What do you think?
I keep hearing about these LS9 head gaskets on the Zr1. These are a 7 layer MLS gasket. Can I use these on a 3.903 bore? Or should I stick with an 02+ MLS LS1 gasket?
What is the best for my app? I dont want to half *** this or do it over.
What do you all think?
Thanks
Steve
10-11-2010, 08:05 PM
#2
Building a basic forged 346 for an FI build. Will be running an A&A intercooled T-trim setup on a C5. Would like to make 10-12 psi. This will be an 02 Ls6 block and I have a set of nice CNC'd 241 heads with 2.055. 1.57 valves. Would like to run these of course with ARP head studs. Motor will be 9.3:1 with these 66cc heads and my 11cc dished pistons.
What head gasket is best for my app. Dont really want to go o-ring'd heads or block. Want a bolt on and go solution. I would like to run these heads as I already have them. Would have them freshly surfaced. I know they aren't thick deck heads. What do you think?
I keep hearing about these LS9 head gaskets on the Zr1. These are a 7 layer MLS gasket. Can I use these on a 3.903 bore? Or should I stick with an 02+ MLS LS1 gasket?
What is the best for my app? I dont want to half *** this or do it over.
What do you all think?
Thanks
Steve
What head gasket is best for my app. Dont really want to go o-ring'd heads or block. Want a bolt on and go solution. I would like to run these heads as I already have them. Would have them freshly surfaced. I know they aren't thick deck heads. What do you think?
I keep hearing about these LS9 head gaskets on the Zr1. These are a 7 layer MLS gasket. Can I use these on a 3.903 bore? Or should I stick with an 02+ MLS LS1 gasket?
What is the best for my app? I dont want to half *** this or do it over.
What do you all think?
Thanks
Steve
10-12-2010, 02:51 AM
#4
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ls9 for the win!!!!!!!!!!! 3.905 bore on aluminum block with half inch studs re used 5 times and 28 lbs of boost with a 101mm and stock 243 heads and zero problems after at least 20 passes.......
just make sure you retorque a few times in the proper way
just make sure you retorque a few times in the proper way
10-12-2010, 07:47 AM
#5
Yeah, I knew about the 4.1" bore on the gasket. That was basically what I was wondering about. So I guess it looks like people are using these on a small bore setup. Using with a 241 head should be no different than a 243 as far as the gasket goes....hmm.
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03-29-2011, 07:01 PM
#13
then I guess you wouldn't know much about them. It does help though as 2 seconds after putting in "ls9 head gasket" into the blank space, this was given to me: https://ls1tech.com/forums/forced-in...fo-inside.html
Hope it helps.
