Inliners International
Posted By: strummin67 I.I. Torque specs for a Chevy 250 - 05/13/16 09:40 PM
What page do you recommend for specs?
Posted By: Wagoneer Re: Torque specs for a Chevy 250 - 05/16/16 01:07 AM
What torque specs are you looking for? I have a 1968 Chilton manual that gives torque specs for a 250. I also have a reprint of the '64 Chevy II factory service manual, so let me know what torque specs you need and I'll see if I can find them.
Posted By: CNC-Dude #5585 Re: Torque specs for a Chevy 250 - 05/16/16 07:40 PM
The torque specs are pretty much universal in all the sources i've seen. Rods are 35-40 ft.-lbs, Mains are 60-70 ft. lbs, etc...Of course these are only for use with stock OEM bolts and nuts, aftermarket fasteners will be different, so you would need to follow their specs accordingly.
Posted By: Wagoneer Re: Torque specs for a Chevy 250 - 05/16/16 10:32 PM
Okay, here are the torque specs I came up with.
Cyl. Head bolts: 90-95 ft-lbs
Rod Bearing bolts: 35-40 ft-lbs
Main bearing bolts: 60-70 ft-lbs
Flywheel to crank bolts: 50-65 ft-lbs
Intake manifold: 25-30 ft-lbs
Exhaust manifold: 15-20 ft-lbs

Those are from the Chilton manual, I'm sure that they're the same in the factory manual as well, just like CNC-Dude said.
Posted By: TJ's Chevy Re: Torque specs for a Chevy 250 - 05/17/16 11:29 AM
On a 194-230-250 the front two head bolts should be set around 80-85 I believe to help prevent cracking.
Posted By: lowboygmc Re: Torque specs for a Chevy 250 - 05/17/16 11:48 AM
And put on the water pump first to help from distortion of those two front bolts
Posted By: CNC-Dude #5585 Re: Torque specs for a Chevy 250 - 05/17/16 11:15 PM
Originally Posted By: TJ's Chevy
On a 194-230-250 the front two head bolts should be set around 80-85 I believe to help prevent cracking.


It's already going to be cracked! 99.9% of all short deck blocks crack in the first few thousand miles after rolling out of Detroit. Backing off the torque is really a moot point and only reduces the clamping effect of the gasket and makes it a blown gasket hazard. Torquing it to the normal specs won't hurt a thing.
Posted By: lowboygmc Re: Torque specs for a Chevy 250 - 05/17/16 11:43 PM
Geez Scott atleast put some sugar on it! Haha
Posted By: CNC-Dude #5585 Re: Torque specs for a Chevy 250 - 05/18/16 09:26 AM
Oh yeah, forgot! laugh

Posted By: lowboygmc Re: Torque specs for a Chevy 250 - 05/18/16 05:02 PM
Hahahahahaha
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