ARP head bolts torque specs?
05-08-2006, 07:13 PM
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ARP head bolts torque specs? i looked up in my chiltons book and it said 65ft/lbs. i have a buddy that told me that arp might have a different torque spec? is this true and if so what is it? or should i just go with the stock specs? thanks for any and all help!!
05-09-2006, 03:37 AM
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Originally Posted by mighty mex
USE THREAD SEALANT!!!!!!!!!! you'll be sorry if you didnt then torque down to 80 ft.-lbs.
do it in steps though
do it in steps though
are sure about 80? I'm not being sarcastic, this is a genuine question.
05-09-2006, 10:21 AM
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I went 65 ft-lbs on mine.
And this is the thread sealant you want... Permatex Hi-Temp . I love the smell of that stuff.
I spread it like peanut butter on everything... 
That sealant, and Permatex Ultra Black, are 2 things I buy *every* time I go to the parts store.
And this is the thread sealant you want... Permatex Hi-Temp . I love the smell of that stuff.
I spread it like peanut butter on everything... That sealant, and Permatex Ultra Black, are 2 things I buy *every* time I go to the parts store.
05-09-2006, 04:24 PM
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Only other 'trick' is to put ARP assembly lube (their moly grease) under the heads / on the shoulder of the bolts so the bolt to washer interface is well lubed.
Here's mine, as of last night.
Here's mine, as of last night.
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05-09-2006, 05:08 PM
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Originally Posted by Camaroholic
Only other 'trick' is to put ARP assembly lube (their moly grease) under the heads / on the shoulder of the bolts so the bolt to washer interface is well lubed.
Here's mine, as of last night.
Here's mine, as of last night.
Nice valve covers, what are they? are ur heads stock castings?
05-09-2006, 06:49 PM
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Those are LT4 valve covers with MBA billet inserts and screwcaps (stock covers didn't fit well with the Comp HiTech rockers). Mildly ported LT1 castings (~254 cfm @ .550). I'm building a 383 street motor, nothing outrageous. Mild cam (230/236), mild stall (3100-ish), with cat and all that. Not going for any big numbers, just something with some torque to get the 3900 lb sled up and moving. 
05-09-2006, 11:40 PM
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Originally Posted by LT1BRN
are sure about 80? I'm not being sarcastic, this is a genuine question.
thats what the machine shop told me to do on arp head bolts. they machine and build engines all day everyday for a living, so im just doing as im told by professionals
"And this is the thread sealant you want... Permatex Hi-Temp . I love the smell of that stuff. I spread it like peanut butter on everything...
That sealant, and Permatex Ultra Black, are 2 things I buy *every* time I go to the parts store."
I wouldnt recommend that one thread sealer,mainly beacuse you want to use one that one harden up on you. All you are doing is sealing it from the water going through the gasket to the water jackets.
05-10-2006, 05:16 AM
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Originally Posted by Camaroholic
Those are LT4 valve covers with MBA billet inserts and screwcaps (stock covers didn't fit well with the Comp HiTech rockers). Mildly ported LT1 castings (~254 cfm @ .550). I'm building a 383 street motor, nothing outrageous. Mild cam (230/236), mild stall (3100-ish), with cat and all that. Not going for any big numbers, just something with some torque to get the 3900 lb sled up and moving.
where can i get them from, its that that I need to go big with my 1.6rr's but My OEM 12 year old valve covers are not in the best shape ever.
05-10-2006, 06:56 AM
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Originally Posted by LT1BRN
where can i get them from, its that that I need to go big with my 1.6rr's but My OEM 12 year old valve covers are not in the best shape ever.
05-10-2006, 07:06 AM
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Originally Posted by mighty mex
I wouldnt recommend that one thread sealer,mainly beacuse you want to use one that one harden up on you. All you are doing is sealing it from the water going through the gasket to the water jackets.
And I guess you can ignore the whole "OEM specified for use on head bolts" reference on the Permatex page. I use it with no problems.And yep, you can get the LT4 valve covers from the GM dealer, and hopefully find the inserts at Thunder. I am missing one of the caps for the valve cover bolts (got lost sometime ago), may need to try to dig up another one.
