Port matching intake-head techniques
Thread Starter
Instructor
Joined: Jun 2014
Posts: 134
Likes: 1
Port matching intake-head techniques
Pulling my motor from my 86 track car Monday to do a freshening of the bottom end and build up of the top end.
I've got 200cc afr64cc heads milled
. 028
1094 headgaskets (. 015)
Stockdeck height.
I'm going to be using a LT1 intake that's been converted for sbc.
My question is will the intake need any machine word done to it also? Or will I just need to port match them?
Do I just use clay to see the offset or is there a better/easier way?
I've got 200cc afr64cc heads milled
. 028
1094 headgaskets (. 015)
Stockdeck height.
I'm going to be using a LT1 intake that's been converted for sbc.
My question is will the intake need any machine word done to it also? Or will I just need to port match them?
Do I just use clay to see the offset or is there a better/easier way?
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
You don't NEED to port match, but if you choose to, find an intake gasket that matches your head ports closely, then move them to your intake. Use the gasket to trace out the port location/shape/size, the port to match.
Thread Starter
Instructor
Joined: Jun 2014
Posts: 134
Likes: 1
That's the gasket porting technique.
But the lt1 intake has to be redrilled to sbc bolt pattern so locating the gasket isn't so easy and to compound the issue, I've brought the heads
+-.080" closer together, I'm worried the intake will set up too high and will have a bad lip inside the port alignment.
But the lt1 intake has to be redrilled to sbc bolt pattern so locating the gasket isn't so easy and to compound the issue, I've brought the heads
+-.080" closer together, I'm worried the intake will set up too high and will have a bad lip inside the port alignment.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
That's the gasket porting technique.
But the lt1 intake has to be redrilled to sbc bolt pattern so locating the gasket isn't so easy and to compound the issue, I've brought the heads
+-.080" closer together, I'm worried the intake will set up too high and will have a bad lip inside the port alignment.
But the lt1 intake has to be redrilled to sbc bolt pattern so locating the gasket isn't so easy and to compound the issue, I've brought the heads
+-.080" closer together, I'm worried the intake will set up too high and will have a bad lip inside the port alignment.
I don't feel that the .028" milled heads will affect your port matching in a meaningful way.
