Inliners International Forums General Discussion Engines torque specs for a 250 oil pan

I have a 1970 250 motor and I cant find out a torquing sequence, or the ft. pounds that I need for the oil pan... Any help would be apprieciated...

Lee,I don't know if there are specs. I normally
just snug the bolts up in rotation after the pan is mounted.Just be careful to not overtighten them and flatten the gasket too much.After running the engine out on the road for a couple of days I look for leaks and check tightness.

Lee, I seem to recall the larger bolts on the 4 corners torque to @ 20 ft lbs, and the small bolts are @ 15 ft lbs. I start in the middle and work to both ends.
A real handy book that includes all the specs is the Chevy Inline 6 Performance Manual by Leo Santucci, available right here from the club's web site. The main thing as has been mentioned is you don't squeeze the daylights out of the gaskets and / or dimple the pan at the bolt holes. I too find after about a week or two it is good to go back over them for a second time. They don't back out but the gasket does flatten out.

Hi Lee,

Looking this up in my shop manual gives the following numbers:
1/4-20 bolts: 80 in-lbs (7 ft-lbs)
5/16-18 bolts: 165 in-lbs (14 ft-lbs)

Not much torque, eh?

Greg