Author Topic: exhaust manifold torque small block  (Read 4800 times)

BillOhio

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exhaust manifold torque small block
« 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.
1969 Z28, Burgandy, numbers matching, 12,900 miles
1968 RS 327 4 speed
1970 Z28 M22 4:10 bought from original owner
1961 Chrysler 300G convertible

1968RSZ28

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Re: exhaust manifold torque small block
« Reply #1 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

1968 Z28

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Re: exhaust manifold torque small block
« Reply #2 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.
Jerry G.

Z28-1968-07C-Norwood
Ermine White, Red Std. Interior
2nd. Owner, 38,000 miles

Stingr69

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Re: exhaust manifold torque small block
« Reply #3 on: December 11, 2014, 02:54:47 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.

BillOhio

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Re: exhaust manifold torque small block
« Reply #4 on: December 11, 2014, 04:29:47 PM »
Thanks guys
1969 Z28, Burgandy, numbers matching, 12,900 miles
1968 RS 327 4 speed
1970 Z28 M22 4:10 bought from original owner
1961 Chrysler 300G convertible

maroman

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Re: exhaust manifold torque small block
« Reply #5 on: December 11, 2014, 10:38:48 PM »
I would not use gaskets, the General didn't.
Doug  '67 RS/SS 396 auto I know the car since new

BillOhio

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Re: exhaust manifold torque small block
« Reply #6 on: December 12, 2014, 01:04:21 AM »
I am going to try no gaskets. One less thing to go wrong!
1969 Z28, Burgandy, numbers matching, 12,900 miles
1968 RS 327 4 speed
1970 Z28 M22 4:10 bought from original owner
1961 Chrysler 300G convertible

JohnZ

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Re: exhaust manifold torque small block
« Reply #7 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.  :)
'69 Z/28
Fathom Green
CRG

KurtS

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Re: exhaust manifold torque small block
« Reply #8 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.
Kurt S
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