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Anyone know the Valve stem and Guide diameter for 440-1 heads

2quick

2quick

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Looking to replace the valve seals on my 440-1 heads and cant find any info on this. Don't want to take the valve covers off until I get the parts.

Does this sound right?
3/8" Stem, .530" Guide?

I think I screwed the original seals up when I removed and reinstalled them without a sleeve while changing and shimming springs before assembling motor. They where blue positive stop type and I just assumed cause they were new they would be fine but when I pulled the intake I could see about a teaspoon full of oil laying on the intake valves in multiple cylinders so while i'm shimming up the rocker shafts (a whole other issue) I think I'll just change the seals as well.
 
HEMI-ITIS said:
Head is cometic and exhaust used to be Mr Gasket Ultra seals.Now I have raised port heads,bought 3 sets of gaskets hoping one will fit! Massive header leaks right now!!
Click to expand...

I meant brand of valve seal Comp, Manley, Etc.

But anyway yea I have Raised deck heads and used the gasket that came with the TTI Headers (Not sure who made it) but it's perfect. Even pulled the driver header out when I redid the trans and used the original gasket and sealed up perfect the second time. Knock on wood!!!

Not a HEMI though so different.
 
Last edited:
You may want to check the fit of the intake manifold. If it is not right the oil can be sucked past the gaskets from the valley cover. A teaspoon is a lot of oil to come past a valve guide.
Normally just a little dribble at most.
 
Indy heads = raised intake ports with separate valley pan.

No oil coming from the valley into the intake ports with that arrangement.
 
2quick said:
I meant brand of valve seal Comp, Manley, Etc.

But anyway yea I have Raised deck heads and used the gasket that came with the TTI Headers (Not sure who made it) but it's perfect. Even pulled the driver header out when I redid the trans and used the original gasket and sealed up perfect the second time. Knock on wood!!!

Not a HEMI though so different.
Click to expand...
I have Superperformance valve seals as well! Greg is a real good guy ,,,,,,and he has a MOPAR:lol:
 
HEMI-ITIS said:
I have Superperformance valve seals as well! Greg is a real good guy ,,,,,,and he has a MOPAR:lol:
Click to expand...
Yes he is, I've spoken with him a few times. I didn't know he had Valve stem seals though.. I need to talk with Greg today and see if he can get me a set of intake gaskets in the 572-13 size ports. My 440-1's have been heavily ported and the 440-1 intake gaskets are way to small and need to be trimmed/Matched to the ports but it doesn't leave much room around the out side edge for sealing. Indy has the 572-13 gaskets that match my port size better but they only come in .060 thick and I need .030 or I will have to mill the manifold. My heads were milled to 62cc chambers.

440-1 port size (1.340” X 2.650”)
572-13 port size (1.475” X 2.700”)

I'm just wondering if the ports are in the same location?
 
Last edited:
I glue Gregs gaskets to the head, then trim with a sharp X-actor blade.
Doug
 
dvw said:
I glue Gregs gaskets to the head, then trim with a sharp X-actor blade.
Doug
Click to expand...
I agree and do this also but I wish the OD of the gasket was a 1/4" bigger all the way around, and yes very thin between ports.
 
The first few years it had the intake off 2-3 times, never replaced the gaskets. 6 years (600 passes) only on the 2nd set of Superformace intake gaskets. It gets lashed every 20 passes. Had 500 passes on only 2 sets of valve cover gaskets. Greg's stuff is good.
Doug
 
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