Are the HEADS "weak" on the 3.0L Vulcan?

[fixizin]

First of all, I know the block is cast iron, but are the heads iron also, or aluminum? What do they WEIGH?

Back on topic, why do so many 3.0's need new heads? Is it the valve guides, and it's just easier to get heads with them already set up?

Is there a cooling issue that causes them to crack?

Do tell...

 

[Roadkill]

I know the 2.9 has a tendency to crack heads. I have yet to hear of the 3.0 cracking heads. The 3.0 I had was cast block and heads. Never had an issue with it.

 

[4x4RangerGuy]

The 3.0 has cast iron heads; it's an old school OHV engine.

The 3.0 is a stout motor and I've had almost no problems with its head cylinders.

 

[Simple_serf]

I have never seen a 3.0 with a cracked head that had antifreeze in it. I have only seen one with a blown head gasket and a warped head that was overheated for 2 hrs. Head wasn't cracked though. As said before, it is one of the last old school cast iron OHV pushrod engines.

2.9 and 4.0 heads are weak. This is well documented. I would take a Lima or a Vulcan any day over any other ranger motor. For me, durability is everything.

 

[4x4RangerGuy]

I have never seen a 3.0 with a cracked head that had antifreeze in it. I have only seen one with a blown head gasket and a warped head that was overheated for 2 hrs. Head wasn't cracked though. As said before, it is one of the last old school cast iron OHV pushrod engines.

2.9 and 4.0 heads are weak. This is well documented. I would take a Lima or a Vulcan any day over any other ranger motor. For me, durability is everything.

+1

My truck may be slow, but my 3.0 will ALWAYS get me to where I need to go reliably.

 

[fixizin]

Cool! ROCK ON VULCAN!... now I need to do my penance and complete all that overdue maintenance.

So in the 4.0 realm, there's the OHV ("X" VIN?), and the (I'm assuming LATER model) SOHC ("C" VIN)... what years were each sold, and are they both problematic in the cylinder heads dept.???