I was wondering if you guys could help me with this. Im trying to bolt on a set of LT1 Impala SS Hooker headers on my traditional SBC 23 deg motor.
The heads are Brodix T1 CNC ported with a D shaped exhaust port in the stock location.

The Felpro header gasket # 1406 is made specifically for the Brodix T1 head. The ports measure 1.630 x 1.530. These are for a 1.750 header. The gasket lines up perfectly to the edges of the port.

The biggest Lt1 gaskets Ive seen are 1.600 x 1.500. But the Hooker Imp SS header is 1.750.

Will these bolt on with out mods or serious port interference? Ive tried this subject on the IMPY SS boards and found nothing.

In case anyone is wondering, there is a method to my madness, hence why im asking this silly question

 

You should contact who ever built you engine and see what they say, thats not a common setup

Would you mind listing what its cost you so far?

 

i have used 1406's on my LT1 religiously....

 

This motor is actually a Dart based SBC and its going in a G body. I have invested way more than any SBC should have invested.
I posted here looking for yalls LT1 experience ,as i have not found anyone to answer my questions in other forums.


Illusional TA,
You use the 1406 with a LT style header? Can you tell me what brand and tube diameter? Also are the LT1 -4 heads ported to the 1406 port size?

 

I use the 1406 felpro on my stock head lt1. I made my headers from scratch. I used a D-port flange that must have been the Brodix because the 1406 gasket fit perfectly. My tubes are only 1 5/8, but I did have to heat and expand them to meet the ports of the flange. If the gasket matches the head it should be ok, but lay it on the header flange and see how it seals.