Manifold Carb studs

[Twins]

Quick questions. I need longer carb studs due to a spacer install.

1. On a stock 73 351 4V manifold what diameter, thread type and length are the studs (5/16ths)?

2. Is there a good source for longer ones (I'll check Summit/Jegs etc. Lots of offerings. Need to check how long they really need to be for my application)

3. Is there a good method for removing the old ones - assuming these things have been in there since day one - or am I at a high risk for snapping one off and ruining my day!

Thanks for your help.

Jeff

 

[73pony]

If you do snap one off drill a pilot hole and use an easy out. They work great. Had to do this on a power steering pump stud on a 94 Dakota last week. It was rusted solid into the block. A little PB Blaster soaking overnight will also help a lot.

 

[jbojo]

ARP are good and come in a wide range of lengths. They are 5/16 ths and can be found on Summit.

 

[Twins]

If you do snap one off drill a pilot hole and use an easy out. They work great. Had to do this on a power steering pump stud on a 94 Dakota last week. It was rusted solid into the block. A little PB Blaster soaking overnight will also help a lot.

I was going to break out the PB Blaster for sure. My last foray with an Easy out wound up being neither easy or out but I'm sure I can get it done if it happens.

ARP are good and come in a wide range of lengths. They are 5/16 ths and can be found on Summit.

Thanks John. I'm looking at those now. Just trying to figure out how long they now need to be. I need about a minimum of a 1/4 inch longer than stock at most. Just not sure how long the stock ones are.

 

[jbojo]

If you do snap one off drill a pilot hole and use an easy out. They work great. Had to do this on a power steering pump stud on a 94 Dakota last week. It was rusted solid into the block. A little PB Blaster soaking overnight will also help a lot.

I was going to break out the PB Blaster for sure. My last foray with an Easy out wound up being neither easy or out but I'm sure I can get it done if it happens.

ARP are good and come in a wide range of lengths. They are 5/16 ths and can be found on Summit.

Thanks John. I'm looking at those now. Just trying to figure out how long they now need to be. I need about a minimum of a 1/4 inch longer than stock at most. Just not sure how long the stock ones are.

Take the height of the carb base and spacer plus the nut at a minimum.

 

[rocket366]

Put two nuts on the stud and lock them against each other to remove stud.

As far as longer studs.. buy them if you need to but I being back yard would

make my own from a bolt or a length of all-thread, but that's me.. I have

better things to spend my money on than carb studs.

Good Luck

Paul

 

[Twins]

Put two nuts on the stud and lock them against each other to remove stud.

As far as longer studs.. buy them if you need to but I being back yard would

make my own from a bolt or a length of all-thread, but that's me.. I have

better things to spend my money on than carb studs.

Good Luck

Paul

THat's the technique I heard works best so thanks.

Yup. I considered just cutting one. Then I can make my own size.

 

[Jeff73Mach1]

The bolts used to hold down the rocker arms work well . . . that's what I ended up using.

The old ones are easy to snap off if they have been in many decades. I recommend, pb power blaster overnight, followed by heating the studs with a handheld torch before trying to remove with the jam nut method described above.

I do not like using easy outs if they can be avoided. If you break one off, the metal is very hard and almost impossible to drill out without damage.

 

[vozaday]

Sorry to get off topic a little bit, but other than to add a nitrous plate, what is the advantage of a spacer?

 

[Jeff73Mach1]

effectively increases runner length and plenum volume for better high end, also insulates the carb from heat for fewer problems on hot starts.

 

[vozaday]

effectively increases runner length and plenum volume for better high end, also insulates the carb from heat for fewer problems on hot starts.

:thankyouyellow:

 

[Twins]

effectively increases runner length and plenum volume for better high end, also insulates the carb from heat for fewer problems on hot starts.

:thankyouyellow:

As Jeff said above. In my case I'm looking for some heat insulation.