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Discussion in 'The Garage' started by trukker, Jan 20, 2005.
Does anybody know what the torque specs are for 97 vortec head bolts?
13 ft-lbs comes to mind. It's not very much, and the bolts are supposed to bottom out before you can tighten them to much, if using factory ones, as I recall.
You can go to www.autozone.com and look it up. I looked it up and it was saying some crazy stuff to do with torquing to 22 ft lbs and then going a certain degrees more.
do not reuse them thay are strech bolts one time use only must get new
the book for my 98 calls for 16 lbs-ft plus something like an additional 55 degrees for short bolts, 65 degrees for med. bolts and 75 degrees for the long bolts, which makes absolutley no sence to me>
thats for the strech proses. thay arnt reusable get new or you will bedoing it again !!!
Man, I'm sorry. Dunno why I read "intake bolts" when you said head bolts. Duh!
I used ARP bolts and used their torque specs, sorry I don't have those around anymore.
This is not true. Vortec engines do not use "stretch to yield" type bolts. They use the same head bolts that have always been used on SBC engines, and you torque them to the same specs. The method of torqueing to a low value and then using degrees of bolt rotation is just a better way to control the actual stretch on the bolts than using a torque wrench (it takes the variations in friction between the bolt and the block out of the equation).
Bottom line is that you can re-use the bolts, and you can torque them using the old torque wrench method. This will work fine.
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