headbolts ? - Team Camaro Tech
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post #1 of 6 (permalink) Old Jan 13th, 05, 08:23 PM Thread Starter
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robert
 
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i have this 355 with roughly 150 miles on it, but i forgot to use sealant on the headbolts.
So i want to get the headbolts out 1 by 1 and put some sealant on it and reinstall it.

But will i need new bolts, because the old ones are stredged?

will the torque still be right if the bolts are used?

thank you

Z28 1984
'77 355ci/COMP cam 218/224 .464/.470 114 LSA
rollerrockers1.5/9.72 forged pistons
ported '66 461 heads 1.94,1.5/Flowtech shorty headers
edelbrock 600/performer rpm intake
th350/shiftkit/hughes2500stall
4th gen 3.23 10 bolt POSI.
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post #2 of 6 (permalink) Old Jan 13th, 05, 10:01 PM
 
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RR,

Imho you can use your old stock bolts b/c they should still clamp fine when torqued to spec.!

Just put a daub of good old Permatex "Indianhead Shellac gasket cement" on them both on the threads and under the heads and torque accordingly..

BUT if you want to use new bolts, they will torque fine, too, imho..

pdq67

PS., GM's 300M head bolt material is about the best stuff there is for what it is used for, for the money AND application!!!



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post #3 of 6 (permalink) Old Jan 14th, 05, 09:53 AM
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Al
 
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Quote:
Originally posted by rolling-robert:

So i want to get the headbolts out 1 by 1 and put some sealant on it and reinstall it.


Personally, I wouldn't do that. I think you risk losing a good seal with your gasket.

If you are intent on trying it, though, I'd be inclined to start with the head bolts in the center, and working your way out to the sides. (same order as torque sequence) Don't forget to drain the coolant before you start.


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post #4 of 6 (permalink) Old Jan 14th, 05, 10:26 AM Thread Starter
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robert
 
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okay, will do that this weekend

Z28 1984
'77 355ci/COMP cam 218/224 .464/.470 114 LSA
rollerrockers1.5/9.72 forged pistons
ported '66 461 heads 1.94,1.5/Flowtech shorty headers
edelbrock 600/performer rpm intake
th350/shiftkit/hughes2500stall
4th gen 3.23 10 bolt POSI.
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post #5 of 6 (permalink) Old Jan 14th, 05, 02:47 PM
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Bill
 
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Robert,
That is actually the best way to do it. Just make sure to follow the bolt tightening sequence. After you put the sealer on the bolt just torque it back the proper spec and go to the Pext one. That is actually the method that Fel-pro and others recommend to use when retorqueing head gaskets. Loosen one bolt up at a time and retorque it. Follow the sequence.
Hope this helps,

Bill Koustenis
Owner
Advanced Automotive Machine
Waldorf Md
1971 Chevelle "Heavy Chevy" original owner


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post #6 of 6 (permalink) Old Jan 15th, 05, 07:27 AM Thread Starter
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robert
 
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t h a n k y o u.

will tell you guys if it helps. im getting a lot of white, sweet-smelling smoke here

Z28 1984
'77 355ci/COMP cam 218/224 .464/.470 114 LSA
rollerrockers1.5/9.72 forged pistons
ported '66 461 heads 1.94,1.5/Flowtech shorty headers
edelbrock 600/performer rpm intake
th350/shiftkit/hughes2500stall
4th gen 3.23 10 bolt POSI.
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