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high psi with ARP studs

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Old 08-27-2008, 10:04 AM
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Default high psi with ARP studs
will arp studs hold 18psi on a 377ci motor? thanks
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Old 08-27-2008, 10:47 AM
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it depends on prep and head gaskets, nothing is guaranteed
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Old 08-27-2008, 11:31 AM
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Prep? head gasket is a 4.130 cometic .051 thick.
????????????????
any help thanks
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Old 08-27-2008, 12:08 PM
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Prep is how even of a deck on both heads and block. How clean was it when you lay the heads on and the most important is tuning!!!
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Old 08-27-2008, 12:12 PM
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read this thread I started...

https://ls1tech.com/forums/forced-induction/973763-what-power-level-has-people-pushed-water-4-bolt-setup.html
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Old 08-27-2008, 01:37 PM
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well deck is milled flat. and heads are AFR. so how flat is that? lol
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Old 08-27-2008, 01:56 PM
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I'd like to see you with some thick deck heads, L19 head studs and a 5 layer MLS gasket. The L19s will resist stretching better than the 8740s.
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Old 08-27-2008, 02:46 PM
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Originally Posted by Big Bird WS6
well deck is milled flat. and heads are AFR. so how flat is that? lol
Pretty flat.....L19's and a tune and your ready to rock
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Old 08-27-2008, 04:22 PM
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I've seen a number of LS2's and iron blocks take 18 psi and to say 700-800rwhp power levels with ARP studs. www.LS1Speed.com has done a bunch.
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Old 08-27-2008, 04:34 PM
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L19s what is this? like is this an ARP thing? or what?
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Old 08-27-2008, 04:46 PM
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L19 is a fastener Material from ARP that is stronger than the 8740s.
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Old 08-28-2008, 01:15 PM
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ok called arp special parts and they helpd me out. **** these L19's are pricey.
got to love it
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Old 08-28-2008, 01:16 PM
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I have std studs and have hit 20 psi

prolly near the limit...pushed maybe an ounce of water into the overflow...
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Old 08-28-2008, 01:24 PM
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well for like 150 dollar differecne i will just get L19
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Old 08-28-2008, 01:25 PM
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Originally Posted by Big Bird WS6
well for like 150 dollar differecne i will just get L19
be careful of hydrogen embrittlement...and don't touch them with bare hands
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Old 08-28-2008, 01:30 PM
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Thanks Fireball, never knew about hydrogen embrittlement, thought you were joking, just looked it up... very interesting topic! Will keep that in mind!
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Old 08-28-2008, 03:27 PM
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Originally Posted by Fireball
be careful of hydrogen embrittlement...and don't touch them with bare hands
yeah that is what they told me. he recommended i wear gloves and keep them well oiled?
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Old 08-29-2008, 01:16 AM
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So you can't touch those studs with bare hands?

Wow that's some crazy ****!
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Old 08-29-2008, 08:20 AM
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yeah something with the rust easy. even just the mosture on your hands will start the rusting problem
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Old 08-29-2008, 11:37 AM
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You guys ever had problems removing the L19s? On the Supra heads they sometimes warp the head when you torque them down which can make them a PITA to remove
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