Exhaust manifold

[73stroked duster]

Have a 72 gold duster. Previous owner put in a 360. Having some minor issues with exhaust leaks on both sides with my headers. Replaced gaskets about 6 months ago and all was good until recent. Started leaking again. Going to try the remflex gasket. Question I have is what are the bolt size on the 360 exhaust manifolds.

 

[Oldmanmopar]

5/16-18 use studs on the front and rear on each side. Always get the engine hot and re torque all the bolts. Do this twice.

If you can find a sheet of 3/16 - 1/8 soft copper have a set laser cut. They'll never blow out again. They use to make them years ago.

 

[73stroked duster]

Thanks. Is the length 3/4 or 1inch

 

[73stroked duster]

also do I need to drain the coolant a bit

 

[cudamark]

also do I need to drain the coolant a bit

To replace the end studs, yes. The middle bolts, no.