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Author Topic: Exhaust manifold bolts.  (Read 12902 times)

69Z28

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Exhaust manifold bolts.
« on: July 11, 2013, 03:43:32 AM »
Are the exhaust manifold bolts all the same length for the 69 small block and other then the french locks were there any washers used at all? Looking to get new bolts for my 69 Z engine but need this info on washers beforehand. Thanks guys.

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GaryC

'UNRESTORED' 1969 Cortez Silver Z28 X33 D80

x77-69z28

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Re: Exhaust manifold bolts.
« Reply #1 on: July 11, 2013, 01:42:43 PM »
Same length with thick flat washers
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69Z28

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Re: Exhaust manifold bolts.
« Reply #2 on: July 11, 2013, 03:38:42 PM »
Quote from: x77-69z28 on July 11, 2013, 01:42:43 PM
Same length with thick flat washers


Thanks. Washers on the french looks too correct? Found some engine pics in this post but can't see the bolts to well to tell.


http://www.camaros.org/forum/index.php?topic=10034.0;all
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GaryC

'UNRESTORED' 1969 Cortez Silver Z28 X33 D80

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Re: Exhaust manifold bolts.
« Reply #3 on: July 11, 2013, 03:57:25 PM »
No french locks on center bolts with flat washers, just torque them to 35 ft/lbs.
Outside pairs have flat washers and french locks and torqued to 15 ft/lbs allowing for heat/cold cycles of cast iron manifold(s).
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69Z28

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Re: Exhaust manifold bolts.
« Reply #4 on: July 11, 2013, 11:17:08 PM »
Yeah, gotcha on the french locks not on the center ports. Just needed to know if all the bolts got the washers including the french locks.

Any particular place to get the most correct parts or do you have to order this from there and that from another there? No one seems to carry an all in one kit.
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GaryC

'UNRESTORED' 1969 Cortez Silver Z28 X33 D80

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Re: Exhaust manifold bolts.
« Reply #5 on: July 12, 2013, 12:33:34 AM »
AMK?
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69Z28

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Re: Exhaust manifold bolts.
« Reply #6 on: July 12, 2013, 01:05:47 AM »
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GaryC

'UNRESTORED' 1969 Cortez Silver Z28 X33 D80

tmodel66

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Re: Exhaust manifold bolts.
« Reply #7 on: July 12, 2013, 02:10:04 AM »
Yeah I got a kit from AMK and included everything including the French locks.
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Daniel  
'69 SS 350/4 speed  Fathom Green--POP

69Z28

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Re: Exhaust manifold bolts.
« Reply #8 on: July 12, 2013, 04:13:46 AM »
Quote from: tmodel66 on July 12, 2013, 02:10:04 AM
Yeah I got a kit from AMK and included everything including the French locks.

Hey Daniel, you have number handy? I haven't looked yet but I was going to see what I could find in the 69 AIM if is even in there.
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GaryC

'UNRESTORED' 1969 Cortez Silver Z28 X33 D80

Edgemontvillage

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Re: Exhaust manifold bolts.
« Reply #9 on: July 12, 2013, 05:16:47 AM »
Quote from: 69Z28 on July 12, 2013, 04:13:46 AM
Quote from: tmodel66 on July 12, 2013, 02:10:04 AM
Yeah I got a kit from AMK and included everything including the French locks.

Hey Daniel, you have number handy? I haven't looked yet but I was going to see what I could find in the 69 AIM if is even in there.

Gary, be aware the french locks available from AMK and other parts vendors are made of stainless steel which is incorrect. The originals were stamped untreated steel. GM still sells the steel ones (GM part# 14081241) however the stamping has changed and they are not the correct appearance for our cars. I located used ones, treated them with Evapo Rust and they work well for an unrestored car.   
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69Z28

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Re: Exhaust manifold bolts.
« Reply #10 on: July 12, 2013, 07:32:39 AM »
Thanks Lloyd. I wasn't planning on using the stainless pieces. I just need the bolts and washers. Other than the set of french locks that are on my unmolested 46000 mile 69 Impala, I have never seen another set. I can guarantee that there probably isn't a yard within 100 miles of me that would have one old engine in it to rob those locks off of. It seems most of the smaller stuff I need to purchase I have to count on members who might have this stuff stashed away. Well...time for a WTB add on T.C.
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GaryC

'UNRESTORED' 1969 Cortez Silver Z28 X33 D80

RS_COPO_Canuck

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Re: Exhaust manifold bolts.
« Reply #11 on: November 15, 2016, 06:15:50 PM »
For a 69 Z - should the French locks be the rounded or square tab? Also - I think only the center bolts got washers - yes? No?
Thanks
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KevinW

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Re: Exhaust manifold bolts.
« Reply #12 on: November 15, 2016, 08:05:48 PM »
Don't forget A/C cars have two longer bolts for the rear compressor mount :)
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elcamino72

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Re: Exhaust manifold bolts.
« Reply #13 on: November 16, 2016, 10:59:46 AM »
The length of the standard exhaust manifold bolts is 2 1/4".
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z28z11

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Re: Exhaust manifold bolts.
« Reply #14 on: November 17, 2016, 01:05:17 AM »
Quote from: KevinW on November 15, 2016, 08:05:48 PM
Don't forget A/C cars have two longer bolts for the rear compressor mount :)

And a spacer -
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