I'm looking for a list of parts needed to replace the intake and exhaust bolts and studs when i change the gaskets

Can it be all studs?

85' 300 with stock cast manifolds

Thanks guys

 

I switched to all studs on mine. It works very well, and most here recommend it.
It's much easier to install everything because you can install the studs, and then hang the manifolds on them.
The biggest issue you may or may not run into is the thick washers on the stock bolts. May or may not because on some years the washers can be slid off the original bolt, and some years they can't.
If you need new washers, get some grade 8 hardened washers around the same diameter, and double stack them. I also like to put a split washer under the nut to give a little extra holding power.

The Mr. Gasket #260 is the recommended intake/exhaust manifold gasket. A lot of parts stores don't carry it, but it's easily orderable on line.



Also, be sure to torque them in the proper sequence. And if you haven't already, check to make sure they haven't warped (common). If so, take the manifolds to a machine shop to have them planed (and be sure to have them already bolted together when you do.)

 

Thanks for the info. What studs do I need though lol. Size and thread

 

I'm not sure on the thread, but its easy enough to take an original bolt with you and match it. I think the ones I used were 2".

Just be sure to get hardened grade 8 steel. Don't want them snapping.

 

Ok thanks again.

 

Manifold bolt threads are 3/8-16.

 

I'm getting ready to do the same thang! What is the torque specs? The reason I asked is because my Haynes Manual says "Upper intake manifold-to-lower intake manifold bolts: 12 to 18". I assume that is 12 to 18 in-lbs. but that seems a little low. Plus I hate how the manuals give you this wide range of torque numbers. Why can't they publish what it should be?

 

IIRC the range is 22-32 ft/lb. You're looking at the specs for the two pieces of the EFI intake.

 

Gotcha. Thanks for the heads up. I see now where I missed the "EFI" part. I'm looking for an engine shop now that can plane the two prior to putting them back on. I'm not going to pull it apart until have all of the parts and someone to make sure they're strait.

 

I believe the stock torque specs are 26 ft/lbs.

 

Apply the anti sieze compound to threads into head. Spray gasket with the copper spray, both sides. Get the highest quality crimp nuts to go on the studs. Torque, run, cool, torque again and forget it.

 

What is copper spray and what does it do for the gasket?