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390 Head gaskets and studs |
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amxron 
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Joined: Nov/18/2011 Status: Offline Points: 295 |
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 Topic: 390 Head gaskets and studsPosted: Dec/25/2020 at 11:51pm |
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Putting a motor together for my 70 AMX E/Stocker.
It will have TRW Flattops (7032P). I know there have been problems with 12to1 compression in the past. I plan to use ARP studs, wondering what is best for head gaskets etc these days? Car is track only, I have not raced it in 20 years. Thanks Folks, Ron.
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AMXron
Fleet/Jeep Mgr. Orbit AMC/Jeep 50-1787 |
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Class Guy
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Posted: Dec/26/2020 at 7:01am |
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Head and block surfaces must be clean and flat and finished according to head gasket manufacturer's recommendation. Cometic MLS gaskets work good.
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Addicted to acceleration.
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amcenthusiast
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Posted: Dec/27/2020 at 11:57am |
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More than 10 to 1 and I'd say don't play around thinking you can get by without o-ringing the block. Once you have your block o-ringed, now you can rebuild and reuse your copper headgaskets, if need be. Another bonus is, with copper head gaskets, you get a full range of headgasket thicknesses, to help with fine tuning the engine to work with your specific cam timing (dynamic compression) Pure copper transmits heat better than steel or composite and this works to create a more even heat retention quality for each combustion chamber -for improved combustion and heat distribution. SCE makes a full range of premium quality copper head gaskets for '66-'91 AMV8. |
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443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/ |
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Class Guy
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Posted: Dec/27/2020 at 6:28pm |
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O-ringing is not allowed in NHRA Stock Eliminator rules.
Too many race engines with way more than 10:1 compression using only head gaskets.
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Addicted to acceleration.
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WesternRed
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Posted: Dec/27/2020 at 6:35pm |
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Cometic MLS gaskets will support way more than 10:1.
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I've finally given up drinking for good...........now I only drink for evil.
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brownspirit
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Posted: Dec/27/2020 at 8:11pm |
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You’d would likely have no issues using felpros. As mentioned, if you use cometic gaskets, be sure to have the surfaces finished in the RA Cometic specifies.
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69' BBB AMX 390/4-speed
69' s/crambler project 69’ International F210d Cummins/5+4 |
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amxron
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Posted: Dec/27/2020 at 8:13pm |
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Where is Jeff Lee these days?
Ron.
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AMXron
Fleet/Jeep Mgr. Orbit AMC/Jeep 50-1787 |
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brownspirit
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Posted: Dec/28/2020 at 10:54am |
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He doesn’t come on too much, probably have more luck over at classracer.com. I have his cell number somewhere if you want it, or email him. Andy
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69' BBB AMX 390/4-speed
69' s/crambler project 69’ International F210d Cummins/5+4 |
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flying tomato
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Joined: Jun/05/2018 Location: Florida Status: Offline Points: 126 |
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Posted: Dec/28/2020 at 10:54am |
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I use Cometic MLS in my stocker. I don't have the compression you have but they custom make the thin ones I need.
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Steve Obertanec
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Posted: Dec/29/2020 at 7:15pm |
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Cometic is the way to go. Like the others say, correct surface preparation is important. You can get many thicknesses & bore sizes.
Do not get the 6 point ARP studs. You cannot get a socket on them. 12 point is the way to go. You will also have to cut the studs under the exhaust ports.
Really good to see you getting back into it Ron. !!!! |
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Steve Obertanec
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