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04-25-2020, 02:31 AM
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#1 |
 Drives: 2010 2ssrs Join Date: Apr 2016
Location: Kalispell, MT
Posts: 39
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Head gasket question
I’ve got a Texas speed sleeved 427 headed my way and I’m not sure what head gaskets to use. Have been using the ls9 on my other motor but supposedly they are only good to 4.100 bore and the 427 is a 4.175. Running an twins at about 16 psi but sadly still with ported 4 bolt heads until I recover from the TS bill. Thanks for any help fellas
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04-25-2020, 02:41 AM
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#2 |
       
Drives: 12 camaro ss, 72 chevelle, 91camaro Join Date: Dec 2013
Location: findlay,oh
Posts: 2,069
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I'd throw a set of Athena gaskets on it and forget it. Or on the cheaper end a cometic gasket
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12 camaro ss 427lsx, th400, f310 heads, crower shaft mounts, gpi specd solid roller, shearerfab 2k hp a/w, twin bullseye 88mm turbos, hughes pro ssx bolt together converter, holley dominator, 8.50 cert, backhalf, Ford 9", 33x17x16 tires, c16 fuel
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04-25-2020, 05:44 AM
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#3 |
Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019
Location: Connecticut
Posts: 1,925
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I assume you're already studded?
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Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane
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04-25-2020, 10:13 AM
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#4 |
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Drives: 2010 2ssrs Join Date: Apr 2016
Location: Kalispell, MT
Posts: 39
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Yes sir 1/2” arp thanks for the quick reply
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04-25-2020, 02:51 PM
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#5 |
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Drives: it changes Join Date: Nov 2010
Location: Norn Iron
Posts: 1,126
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Why not ask whoever is sorting the block ?
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04-25-2020, 07:53 PM
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#6 |
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Drives: 2010 2ssrs Join Date: Apr 2016
Location: Kalispell, MT
Posts: 39
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They recommended the cometic head gaskets but are out of them and they are not shipping because of Covid. Plus I trust sourcing info from this site. I like the idea of the Athena and plan on going that route. Thanks
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04-26-2020, 04:15 AM
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#7 |
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Drives: it changes Join Date: Nov 2010
Location: Norn Iron
Posts: 1,126
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Athena also make MLS gaskets too.
I'd say for extreme applications, the steel ring gasket is a good option, and as you sound like you may change heads at some point...no issue there either. But don't forget the steel ring does bite into the head face ( and on alloy blocks, I've seen it sink into the block too ) For some racers this is acceptable. For primarily a street car....not so sure it's a route I'd take yet It's a good system, I'd like to see more results on the long term usage though |
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