Exhaust studs, what size do I need?

[Copilot]

I have a 68 340 with X heads and need the four studs for the exhaust manifolds. what is the length? thread? I'm using TTI headers, not sure if that makes a difference.

Thanks in advance

 

[mrmopar340]

I have a 68 340 with X heads and need the four studs for the exhaust manifolds. what is the length? thread? I'm using TTI headers, not sure if that makes a difference.

Thanks in advance

If you bought TTi's they include everything in their kit. Back 4 bolts/ studs back side, cylinders 7 and 8, are in the water jacket and need some type of sealant on them. Permatex high temperature thread sealant on them.

 

[Katfish]

7/16" - 14 **** These are head bolts ****

https://www.speedwaymotors.com/shop...ck-340~15133048846-10-490-30786-9-19-2-19-110

 

[rklein71]

7/16" - 14

https://www.speedwaymotors.com/shop...ck-340~15133048846-10-490-30786-9-19-2-19-110

not 7/16 for sure

 

[Katfish]

Oops, your right, those were head bolts

Dorman HPX Exhaust Header Bolts for Chrysler 340-360 Hooker Headers | eBay

Pardon Our Interruption...

• ARP 5/16-18" Thread Header Bolt