Exhaust Manifold Bolts

[jeremywatco]

Quick question...

Striking out at all my local auto parts stores for new exhaust manifold bolts. Can I just pick some up at my local hardware store?

Mine came out just fine however they are looking preeeeeetty sketchy. Dont trust them to reuse them.

 

[Rustytruck]

your auto parts place should be able to order these.

https://www.dormanproducts.com/p-633-03099.aspx?year=1974&make=Ford&origin=keyword

https://www.summitracing.com/parts/rnb-03099/overview/make/ford

https://www.summitracing.com/parts/rnb-03407/applications/make/ford?prefilter=1

Remember you have 2 exhaust manifolds so you need enough sets to cover on both sides. assuming you are using the stock manifolds.

 

[jeremywatco]

your auto parts place should be able to order these.

https://www.dormanproducts.com/p-633-03099.aspx?year=1974&make=Ford&origin=keyword

https://www.summitracing.com/parts/rnb-03099/overview/make/ford

https://www.summitracing.com/parts/rnb-03407/applications/make/ford?prefilter=1

Remember you have 2 exhaust manifolds so you need enough sets to cover on both sides. assuming you are using the stock manifolds.

Thanks. I have those. I am referring to the bolts that hold the manifold to the head. There is 8 of them. 4 short, 4 long. I snapped a stud on the flange and had to remove the manifold in order to get it out. I have the bolts so I can match them up, just wondering if they need to be special "exhaust bolts" or if normal grade 5 from the hardware store will work.

 

[ENDLIFE]

I used plain old grade 5 bolts with a flat, and a lock washer. Worked out beautifully, and still hasn't come loose.

 

[jeremywatco]

I used plain old grade 5 bolts with a flat, and a lock washer. Worked out beautifully, and still hasn't come loose.

Great news! Thanks

 

[PickleJar]

I used regular 3/8 USS grade 8 bolts, with SAE flat washers from the hardware store. Just took them in to match up length. The 4 studs I took to a local mom and pop parts store and they pulled a bin of mixed stuff out and found them new shiny and everything.

 

[Steve83]

Neither Grade 5 nor Grade 8 is suited to that application. Grade 7 is heat-resistant, and you'll never find them at a hardware store. Read this caption & shop your local parts stores, online parts stores, Amazon, & eBay:


(phone app link)

If you need a short one with stud head, cut a long one.

 

[Rocko1012]

bolts

Jeff's Bronco sells 2 sets for stock v8 manifolds. That's what I did.

 

[904Bronco]

Neither Grade 5 nor Grade 8 is suited to that application. Grade 7 is heat-resistant, and you'll never find them at a hardware store. Read this caption & shop your local parts stores, online parts stores, Amazon, & eBay:


(phone app link)

If you need a short one with stud head, cut a long one.

You learn something new every day... Grade 7, guess I missed that conversation in shop class way back when. Or more likely forgot it...