intake gasket 383 mopar

[brianhouchins]

Has anyone done this? Cut out the valley pan (as in the picture) and use a 4 gasket from Felpro? Or do you use a stock valley pan / intake gasket?

 

[Meep-Meep]

Nope. And in my opinion there is no need to. It's also likely you won't be able to even get the intake bolts started if you use gaskets that are thicker then the valley pan. A little sealer in the corners and rail and some around the ports and you're good to go. Keep it simple!

 

[A383Wing]

yup, what Meep said...Chrysler has had this set up for decades..if it ain't broke, leave it alone

Bryan

 

[Funship32]

Can't say I've ever seen that done although I have seen others use intake gaskets (1 set on each bank) along with a complete valley pan.

 

[eric383]

Did anyone else see last weeks Horsepower TV where they did a Mopar 400 stroker build? I thought it was kinda strange they used 2 intake gaskets on each side to sandwich the valley pan. I always thought this was too thick.

 

[mr. b]

I use valley pan and intake gasket on mine with aluminum intakes it will suck oil on intake ports if you do not use the gaskets.Bob

 

[A383Wing]

been running aluminum intakes for decades...still running just the stamped steel valley pan gasket. No extra paper gaskets here, never an oil sucking problem or anything like that...

If heads have been milled, you are supposed to take a percentage off each side of the intake as well so the mating geometry stays the same in order for the valley pan to seal all the way around the intake. People that have to use paper and makeshift gaskets under the intake to seal to the cylinder head have something wrong with angles of mating surfaces and the paper gaskets are just a "band aid" or "cover up" fix.

Bryan

 

[Cranky]

Actually, you should take the material off the head's port face and not the intake when you surface mill a set of heads, that way the intake will still fit other engines but if you mill the block, then it's up to you as to what you want to do. And I've also never done that to a valley pan but have heard of it before but the best bet is to do a mock up before you machine/mill an intake or the head to see how things fit. I've had aftermarket intakes that actually fit better once the heads or block were milled. Many times, the book way has not panned out and a mock up should always be done....

 

[Funship32]

Did anyone else see last weeks Horsepower TV where they did a Mopar 400 stroker build? I thought it was kinda strange they used 2 intake gaskets on each side to sandwich the valley pan. I always thought this was too thick.

Yeah I caught that episode too. As I said in a previous post: I've seen people do that before. My understanding is that they aid in sealing alum intakes due to different expansion rates but I've seen others run w/o them too (like me).