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head stud size for LSX

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Old 08-11-2009, 10:26 PM
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Default head stud size for LSX

I'm building a 427 Lsx(6 bolt) that is going to make about 1100 hp at the crank(I hope), maybe more in the future. It is going to have TEA 245 heads and be blow through. My question is this, will the stock size hardware be enough to hold the heads down, Or should I step up to 1/2". I will be using ARP studs.
Old 08-12-2009, 04:54 AM
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For 1100 HP, the stock size is fine. For 1400 HP, I'd step up to 1/2"...
Old 08-12-2009, 07:08 AM
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the stock size will hold to over 1600hp
Old 08-12-2009, 07:12 AM
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Originally Posted by Shawn @ VA Speed
the stock size will hold to over 1600hp
can't be true...the internet says so
Old 08-12-2009, 08:23 AM
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Originally Posted by Fireball
can't be true...the internet says so
so i hear
Old 08-12-2009, 03:36 PM
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Got my numbers from Kurt U. I guess everyone has their comfort zone...Is that more than 1600HP on O-rings?
Old 08-12-2009, 04:40 PM
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I think I will go with the Kurt Urban 1/2" studs, they are 1/2 the price of stock size ARP studs. Then there should be no question that I have enough clamping force. Thanks for the replies.
Old 08-13-2009, 05:33 PM
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Can't go wrong and can't have to much clamping force whether you need it or not. Kurt's a great guy and will take care of you..



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