allpro head question

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Nov 1, 2007 | 08:17 PM

#21

Beaflag VonRathburg

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From: Jax Beach, Florida

Quote:

Originally Posted by ls1king000

right. 4 bolt heads but, I think it was a 6 bolt gasket anyway. Hmmm what gasket to get.....

I'm trying to figure that out right now too. There's a lot of new options on the market right now. I'm thinking I'm just going to run a .040 cometic.

Nov 1, 2007 | 08:25 PM

#22

02SSLE

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From: Conway, AR

Craig @ ETP told me to run the Felpro, so I am currently.

Nov 1, 2007 | 08:34 PM

#23

ls1king000

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From: addison, IL

I'm looking at fel-pro possibly new GM mls. How many layers on the fel-pros?

My motor has 4.030" bore too.

Nov 1, 2007 | 09:07 PM

#24

MIGHTYMOUSE

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From: Virginia

ya i have a 6 bolt gasket doing great so far.

i would be interested in those 'more than 3 layer' gm gaskets. i have not seen in person.

i dunno when the pn's for what i have will be available.. i would certainly think they would be by now. maybe they are waiting on my review.. lolz not

Nov 1, 2007 | 09:22 PM

#25

ls1king000

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From: addison, IL

I'm going to call them monday unless there is a sponsor here who carries Fel-pro.

I only saw this on there site. Probably go with this if MM still has the only prototype.
http://www.federalmogul.com/en/After...ermatorqueMLS/

Nov 2, 2007 | 12:37 AM

#26

Beaflag VonRathburg

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From: Jax Beach, Florida

The new GM MLS gaskets are 5 layers. I'm pretty sure Cablebandit is running them now.

Nov 2, 2007 | 06:15 AM

#27

cablebandit

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From: Cleveland, OH

gonna test (a little boost) the new gm 5 layers here in a few hours

Nov 2, 2007 | 07:01 AM

#28

stevieturbo

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From: Norn Iron

For reference. here is a new 6.0 gasket. You can clearly see the waterway holes. 5.7 MLS is exactly the same.

MM....are your prototype gaskets readily available ? If I could get a set here in a week or so, I could give em a try when I rebuild too. Although I do ahve these regular 3 layers MLS here.

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Nov 2, 2007 | 07:25 AM

#29

MIGHTYMOUSE

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From: Virginia

i dont work for em man sorry.

so why do head companies /oem cast all that water porting into the head if all it does is NOT match the gasket?

Nov 2, 2007 | 07:36 AM

#30

stevieturbo

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From: Norn Iron

Where would I get a set ? or they not generally available yet ?

No idea...but most blocks/heads would seem to do the same. Big open castings, with the gasket restricting the flow.

Nov 2, 2007 | 08:07 AM

#31

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From: Knoxville, TN

Quote:

Originally Posted by MIGHTYMOUSE

i dont work for em man sorry.

so why do head companies /oem cast all that water porting into the head if all it does is NOT match the gasket?

My guess is just part of the casting process, easier to get the sand or whatever core out of there somehow. But yea its pretty weird they have those big holes cast in there and they are blocked off by the gasket.

The new AFRs I just received blocked off some of the holes between the cylinders but the new All Pros look pretty solid by getting rid of most of the big holes. Not sure how much it really helps but it sure looks stout if anything. These are what the new AFRs look like.

Last edited by kp; Dec 14, 2008 at 01:20 AM.