CRG Discussion Forum

Camaro Research Group Discussion => Restoration => Topic started by: BillOhio on December 10, 2014, 08:14:20 PM

Title: exhaust manifold torque small block
Post by: BillOhio on December 10, 2014, 08:14:20 PM: I have searched and looked in assembly manual and not much luck. I did see center bolts 35 outside bolts 15. Is this without gaskets? With gaskets any different? I am using french locks and no gaskets.
Title: Re: exhaust manifold torque small block
Post by: 1968RSZ28 on December 10, 2014, 09:49:34 PM: My 1968 Chevrolet Chassis Service Manual (ST 130-68) says 20 lb. ft. for the exhaust manifold bolts (3/8 - 16). Same specification for all V8s (small & big blocks).

Paul
Title: Re: exhaust manifold torque small block
Post by: 1968 Z28 on December 10, 2014, 11:36:08 PM: I think I've seen in a Haynes manual that the readings should be.....20 ft/lbs on the outer and 30 ft/lbs on the inner.
Title: Re: exhaust manifold torque small block
Post by: Stingr69 on December 11, 2014, 02:54:47 PM: Quote from: 1968 Z28 on December 10, 2014, 11:36:08 PM
I think I've seen in a Haynes manual that the readings should be.....20 ft/lbs on the outer and 30 ft/lbs on the inner.

Chilton says that too. I would not change the torque when using gaskets.

-Mark.
Title: Re: exhaust manifold torque small block
Post by: BillOhio on December 11, 2014, 04:29:47 PM: Thanks guys
Title: Re: exhaust manifold torque small block
Post by: maroman on December 11, 2014, 10:38:48 PM: I would not use gaskets, the General didn't.
Title: Re: exhaust manifold torque small block
Post by: BillOhio on December 12, 2014, 01:04:21 AM: I am going to try no gaskets. One less thing to go wrong!
Title: Re: exhaust manifold torque small block
Post by: JohnZ on December 12, 2014, 03:57:58 PM: And if you expect to be able to remove the exhaust manifold bolts at some later date, use a film of hi-temp anti-sieze on them when you install them. :)
Title: Re: exhaust manifold torque small block
Post by: KurtS on December 16, 2014, 04:41:00 AM: I use hi-temp anti-sieze on every exhaust clamp and bolt on every car I own. Makes working on the exhaust so much easier later.