70DusterBob
Well-Known Member
They are on a 1975 360. Just finished putting the double roller timing chain in. Took me for EVER!
Thanks!
Thanks!
OP, are you asking about the bolts to hold the pulley to the damper, or the big bolt for the damper to the crank? If it's the 5/6" pulley bolts, then 15-18 ft lbs. If it is the big damper to crank bolt, 135 ft lbs.
Glad you got that chain done!
Maybe these are accurate (can't believe everything you find on a search):
View attachment 1715121193
Mymopar.com has lots of free manuals to download. Congrats with the chain.
Thanks Four Speed. And thanks for the site too, it looks like that could keep me busy for quite a while.
Lol it's kept me busy here for 8+ now. Great site with tons of great members.
Enjoy!
Torque spec is.... use a 1/4 drive ratchet and make it real tight. That's idiot proof.
Just keep in mind what size fastener you're torqing down, a sae production 5/16 won't put up with much more than 25- 30 lbs before it breaks, moly header bolts will put up with more torque than those.
Here ya go.... note that plated bolts (Zinc or cad plated) get less torque, as the plating makes them slicker, and thus they will reach a higher level of stress/strain in both threads and bolt if you run them to the same torque as non-plated ones. (And oiled threads acts like plated threads...)
Tightening Torque Guide
Edit to add: BTW, the grade of the bolt is just one half of the situation... the thread stress and strain of the nut or whatever you are threading the bolt into has to be considered. If the nut (or other internal threaded objust, like your damper) is of a lower grade, then the limits on the lower grade material determines the limit. I would suspect that the damper material is more like grade 5 than grade 8.....so I would stick with the grade 5 limits. (And would also use some blue Loctite if I wanted peace of mind.)
Late reply.....easy answer. I'm a ham radio operator as well as a car nut, and NM9S is my FCC assigned call sign. When I first visited FABO, I had no clue it was so good so I signed in with my moniker from an antique electronics forum, not knowing I would find this site to be as great as it is. The rest is history as they say.....BTW, is your nick implying "Number 9's The Ham"? I always wondered what it means, lol
Late reply.....easy answer. I'm a ham radio operator as well as a car nut, and NM9S is my FCC assigned call sign. When I first visited FABO, I had no clue it was so good so I signed in with my moniker from an antique electronics forum, not knowing I would find this site to be as great as it is. The rest is history as they say.....