just want to make sure, the 350 only needs 75 ft lbs? the TA site says this, i want to make sure since that seems kinda low, especially since they state 100-110 for the big blocks?
I have always torqued my head bolts to 75 lbs when using the felpro blue gaskets. I've never had a problem. Just make sure you tighten them in steps and they should not back out on you. I just checked the head bolts on my new engine. After 5000 miles they still have not changed. Still 75 lbs.
ok, just wanted to make sure. seems like i heard someone say they got different specs awhile ago, so i wanted to confirm TA's. i'm reusing head bolts, so no stretch, and i plan to retorque twice while on the stand. shouldn't have a problem, right?
David you won't have any problem. Use a little anti-sieze or a quick dip in oil before you put the bolts in and torque them down to 35 lbs, then 55, then 75 lbs following the proper torque sequence. Make sure the threads are clean before applying the anti-sieze or oil for an accurate torque reading and use a torque wrench that clicks when you're at the right torque. Don't use one of those junk wrenches that has the pointer. Good luck.
The big blocks use 1/2 bolts, the 350's use 7/16 bolts, hence the reason for the lower torque. Jim Burek
head bolts are these the original head bolts ? i was always told that when u remove rhe heads u should replace the head bolts in order to obtain the proper torque . comments ?
i've been told they're fine as long as the threads are clean. maybe in a higher performance application i'd get new ones. i was low on cash and didn't want to worry about the threads stretching. i used 30 and 55 as my increments as a guess...seems like i was pretty close. and thanks for the headsup jim:TU: oh, and i cleaned & dipped bolts with an extra quart of oil i had laying around. used a big craftsmen click-style torque-wrench.
