Differences 392 IC Vs NON-IC

[Robert Kenney]

Questions about ic vs non-ic sv392's have come up more than once. I wanted to post some photos to show the differences of the two versions while I have both in my garage.

The photo captions define what the image showing.

392 ic front

392 non ic front

392 head plugged for 196

392 head plugged for ic 392

392 ic block left deck

392 non ic block left deck

392 ic block right deck

392 non ic blockright deck

 

[Michael Mayben]

Thanks Robert!! We needed this thread!

Ya got comparison shots between ic and non-ic head gaskets? If ya don't I May have some.

Also, the intake manifold gasket(s) for an ic head (either set up as 196 or 392) have restricted rear water ports with a 3/8" hole.

The non-ic 392 and non ic 196 use intake gaskets that have no restriction in the rear water port. And those same intake gaskets are used in the 345 application.

 

[Robert Kenney]

Here you go. Head gaskets for comparo.

Ic 392 head gasket


Non ic 392 head gasket

 

[Tiny Yokum]

Thank you Robert. I have a ic392 in the works.

 

[PacificEd]

Are there any differences between the ic and non-ic heads themselves or just the block and where the water tubes enter?

 

[Scoutboy74]

The heads are vastly different and cannot be interchanged. You can get a glimpse of the differences by looking closely at the pics that compare the intake manifold gaskets and also the head gaskets. There are obvious differences from stem to stern in both cases.

 

[Tiny Yokum]

Wanting to put rebuilt 345e heads on a 1973, 392 improved cooling. 4v
I've heard of it done for performance reasons, probably not on non-improved cooling long block.
Engine runs good as is, future rebuild with or without 345e heads.?
392ic not pictured

 

[Robert Kenney]

Since the 345 never came in the IC configuration, they will not work in an IC 392 block. Non IC 392? Possible

 

[Tiny Yokum]

OK. Thanks Robert.

 

[1974IH4x4]

So the only way to know if you have an IC 392 is by taking the engine apart and looking to see if it is going through the block or the heads, is this correct? Or can you tell just by looking at the engine?

 

[Scoutboy74]

Just look at the front of the block at the water tubes. If they enter the block, it's IC. Enter heads, non IC.

 

[1974IH4x4]

Ok, thank you for the reply. It looks like my 392 is a IC 392.

 

[jeff campbell]

Anybody know which engine the 392 only had V392 cast into the heads & no part # on them ? Non-IC early ? TIA.

 

[benwalling]

Here you go. Head gaskets for comparo.

Ic 392 head gasket
View attachment 8058

Non ic 392 head gasket
View attachment 8059

Hi, I know this is an old thread. Hoping for clarification. Based on the pics of the block, it looks like these are switched. The ic block has passages that match the non ic gasket. Am I missing something? Please help!

 

[1975IH200]

The gasket photos of the gaskets are labelled correctly.

The photos in the original post for the engines are labeled incorrectly in the threads' first post, but ARE labeled correctly on the photo label when the photos are opened.

Edited for clarity...

 

[benwalling]

The gasket photos are labelled correctly.

The photos in the original post for the engines are labeled incorrectly in the thread, but ARE labeled ocrrectly on the photo label when they are opened.

Thank you!