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cylinder head tq


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THE HEAD BOLTS REQUIRE the use of THREAD SEALANT ALSO

 

gmfs70-88chf1.jpg

 

 

if your useing aluminum heads don,t forget you need to use OILED steel washers under the bolt heads or on the studs under the nuts to get the correct torque readings

On small blocks I normally run the bolt tq up in stages

55lbs

then re-torque in sequence to 60lbs

then re-torque in sequence to 65 lbs

BUT FOLLOW THE CYLINDER HEAD MANUFACTURERS ADVICE ON TQ SETTINGS AND REMEMBER TO DIP THE BOTTOM 3/4ths of the threads into permatex thread sealer

if its permatex thread sealer in white can with a dabber in the cap, looks like molasses with a black color /slightly redish tint on white paper your useing the correct sealer

80063.jpg

youll normally be just fine runing the bolts in to the specific torque settings in stages then waiting a few minutes and going back over them again to make double sure you got them all correctly torqued, many guys recheck the headbolt torque settings & retorque the heads after the cam break-in after the engine cools the first time but thats normally not necessary the first and sometimes MOST important 10% of any job worth doing is making 100% sure you know the correct way to do something and that you havre the correct tools and parts with detailed instructions, yes you can memorize the correct info but if you need the correct sbc TQ values as an example

http://www.torquespecs.com/

 

http://www.2quicknovas.com/torque.html

 

 

http://www.cobra-replica.co.uk/html/cobra_54.shtml

 

http://rodshack.port5.com/t_torque_big_block.htm

 

http://www.darklair.com/monte/torque_specs.html

 

http://www.gearheadracing.com/Reference/TorqueSpecChevy.htm

 

http://www.summitracing.com/tech/charts_guides/tz_02cht_gds_mprtrq_p.htm

 

http://www.hotrodshack.com/torque_settings.htm

 

 

its alot easier if youve got referances in your data base

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