440 head question

[boardog]

i have a very small water leak out of one of the front header bolts. Do all the exhaust bolt holes go into the water jacket? i am new to the mopar stuff and did not put sealant on the threads.

 

[R413]

Depends on the casting number but most of the BB heads all go to coolant.

 

[boardog]

Thsnks, i will put some sealant on all of them tomorrow

 

[493 Mike]

Thsnks, i will put some sealant on all of them tomorrow

Just poke some wire or a small screwdriver into the holes. If you hit cast iron the hole is dry.
Mike

 

[1KoolBee]

Use this on the threads. Works great on big block exhaust studs! $13.50 on Amazon. I had a leaker on my 383, sealed it with this back in 2012. Never leaked a drop since.

 

[Dave6T4]

Just treat all the holes as being wet, to be safe.

 

[RemCharger]

Use this on the threads. Works great on big block exhaust studs! $13.50 on Amazon. I had a leaker on my 383, sealed it with this back in 2012. Never leaked a drop since.

View attachment 1473223

This is the product to use, and there's other places on the motor to use it as well.

 

[33 IMP]

R413 is correct. Some of the older heads had some blind holes, and some wet. The later heads that you are likely to have all have the holes wet, and need sealer.
I used the same permatex as above.