IMRC Port Shape(s)

[345 DeSoto]

Do all Mark VIII's have square port IMRC Ports...in the head and in the IMRC?...

 

[Roadboss]

Yes

 

[Calabrio]

And personally, I found that taking those IMRCs apart to be a miserable experience. I think I'd sooner replace the engine than take the IMRCs off again.

 

[98LSC32V]

No gen 1's have circle ports on the IMRC's.

 

[Calabrio]

No gen 1's have circle ports on the IMRC's.

I don't think so.
I remember them being square shaped.

 

[345 DeSoto]

Okay, guys...yes, they are all square port, or no, some are round port?...

 

[BAD97LSC]

they are square and round, square,round,square,round geeeez what happened to all the mark VIII experts here???

 

[Tiltedhalo]

Gen 1 and Gen 2 heads both have rectangular primary ports and round secondary ports, the only difference in the two heads are better valve springs on the Gen 2's.
The Gen 1 intakes have round primary and secondary runners, the IMRC's convert the round intake to the square head ports.

 

[98LSC32V]

96's had the beehive valvesprings as well.