1969 GT350 intake manifold torque spec?

[Mike H]

1969 GT350 intake manifold torque spec? 20lbs?

[Bob Gaines]

1969 GT350 intake manifold torque spec? 20lbs?

Yes. Start with 10 then 15 and finally the 20. The sequence to tighten each bolt is in the shop manual.

[roddster]

Tip: and then retorque it the next day or so.  Surprising how much the gaskets settle.

[pbf777]

    "20 ft.lbs." on a 5/16" x 18t fastener requires a "good", aka. one of the "higher", grade ratings and though the O.E.M. fastener (in good condition) is capable and I understand what the manual calls out, don't forget your also pulling down on an aluminum intake manifold (?); so I generally will not pull them past "18 ft. lbs.", which is quite suitable for the application.

    And yes, re-torque later.   

    Scott. 

[Mike H]

thank you everyone

[TA Coupe]

Make VERY  sure you use a good torque wrench. I once used an old fashioned one where the inside spring was worn out and ended up breaking off the corner of a 2x4 intake trying to torque it to 18 ft lbs.

     Roy