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Topic: SBC 400 Engines

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SBC 400 Engines

Posted: 2/8/09 12:49pm Message 21 of 26
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Flanders, NJ - USA
Joined: 1/27/2004
Posts: 2553
Vette(s): 1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.
Woo-hoooo! Big%20smile Good news Paul.
Too bad there's salt on the roads otherwise I could take a ride today. Really nice day.
Dave



 

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SBC 400 Engines

Posted: 2/8/09 1:11pm Message 22 of 26
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PaulThumbs%20UpThumbs%20UpThumbs%20Up Yes if you can remove just the studs, reseal then re- torque to specs. here is a guide for you....

Check out these Head Stud Installation Tips prior to installation!

Clean and chase all bolt threads in block to ensure proper thread engagement and accurate torque readings.
  1. All hardware should be cleaned and inspected for possible shipping damage prior to installation.
  2. Since most studs extend into the water jacket, coat threads with ARP thread sealer and screw in hand tight ONLY.
  3. Install gasket and head, then lubricate washers and nuts with oil or ARP moly assembly lubricant prior to their installation.
  4. Following the engine manufacturer's torque pattern, torque each stud nut three times to recommended values found in the general fastener chart below.

NOTE: To ensure positive sealing of "wet" head studs, a hardening or semi-hardening sealant, such as Loc-Tite or Permatex, etc. should be used. Some engine builders employ a sealer in the coolant, such as Aluma-Seal, Silver Seal or K&W sealer, etc. You may also use high temperature RTV silicone. Whatever product is used, it is imperative that the cylinder head is installed and torqued to proper levels BEFORE THE SEALANT HAS CURED!

 

Torque w/30-Wt Oil

Torque w/ARP Moly-Lube

1/4in. stud

12-15

10-12

5/16in. stud

25-32

20-25

3/8in. stud

45-56

35-44

7/16in. stud

71-89

56-70

1/2in. stud

108-135

84-105

9/16in. stud

156-195

122-152

5/8in. stud

214-268

167-208

6mm stud

10

9

8mm stud

25-32

20-25

10mm stud

54-68

42-53

11mm stud

80-100

63-79

12mm stud

97-122

77-96





corvette440hp

SBC 400 Engines

Posted: 2/8/09 6:22pm Message 23 of 26
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HOWELL, NJ - USA
Joined: 5/18/2004
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Vette(s): 1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.
Thanks much Larry. Awesome info. For a guy that's never done head studs directly before, I hope I get it right the first time.

Any recommendations on the best sealer to use in this situation?


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SBC 400 Engines

Posted: 2/8/09 7:14pm Message 24 of 26
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Lanoka Harbor, NJ - USA
Joined: 12/21/2006
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Vette(s): 1975 metallic blue coupe with t-tops,L48, t/t steering, black leather interior. 1990 L98, white/red leather interior, auto,a/c
great news paul. i did a lot of firsts working on my 90. just be patient and take your timeThumbs%20Up. as far as the thread sealer, loctite has a high temperature sealer that may be what you need. the only thing you dont want to use is the super duty loctite as you would not be able to remove the bolts easily afterwards. on my escalade, they used the super on the frame that holds the rear disc brake caliper and i had to use a torch to loosen the bolt. that wouldn't be good for the block. good luck and i know you will do great. dave eddie208752009-02-08 19:15:51


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SBC 400 Engines

Posted: 2/8/09 8:04pm Message 25 of 26
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Paul, Loc-Tite as was mentioned is good, I like Loctite 567 (used to be called PST). It's an anaerobic teflon sealant, high temp. It has never failed me.You can also use ARP Sealant part #100-9904  

All-around protection.
These Teflon® based sealers have a rust and corrosion inhibitor. In aluminum, steel, stainless steel, and plastic, they deliver a flexible, leakproof seal against coolants, water, gasoline, natural gas, and LPG. These sealers will be effective from -30 to 550 degrees F, and have a sealant range of 10,000 psi.




corvette440hp

SBC 400 Engines

Posted: 2/8/09 8:16pm Message 26 of 26
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Anaerobic sealants seal in the absence of air. It cures, but never hardens. It can be removed without heat.


corvette440hp

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