Well let me try and regurgitate what a head porter told me about gasket matching on an lt1 . Apparent where the head and intake meet is close enough in size and shape already and it isnt the big restriction that needs to be dealt with first. Apparently when ony gasket matching you will cause an expansion just right there and the path the air flows from the intake to combustion chamber needs to be relatively the same size all the way through and gasket matching will cause an expansion for the air in that area then the runner will get smaller shortly after. Something about this can lead to turbulence and a break downof flow characteristics.

Im sure I said that wrong, so hopefully llyod can chime in

 

Yeah, the more complicated version of what I was trying to say. Haha. Just gotta wait for lloyd now.

 

That's true if you make them much larger than the rest of the runner.

 

yeah...but look at an intake gasket on a stock head.....its very close to begin with. Maybe on a big *** big block head or something. Its not so big of a deal on the LT1 stuff from what I have seen.

I'm sure Lloyd knows tho.....send him a PM

 

i am confused, are you talking about matching the gasket to the head?

if so he told me to match mine

when you lay the gasket on the head it is very easy to tell why

 

match the gasket to the head and to the intake manifold... make it all smooth.. provided you do it evenly (no massive dips, uneven cuts) there shouldnt be an issue.