440 6 pack

littlemanjoe · 09-14-2019, 08:11 AM

Putting together a stocker bottom end and I have 3 blocks to choose from.
The best block checks out with a minimum of .171 cylinder wall thickness. Before machine work is done.
My pistons are .060 over.
The question I have is, would you fill the block or sleeve all eight cylinders?
I've had someone tell me do not fill the blocks you will lose ring seal.

Bruce Fulper · 09-14-2019, 12:43 PM

The reason to fill blocks is to preserve ring seal. Increases rigidity. Fill as high as possible leaving 1-1/2" at the top.

Jerry Terry · 09-14-2019, 01:25 PM

We always ran filled blocks never had any problems with ring seal but i never had a mopar if that makes any difference.

Jerry
Retired 3490 3492 STK SS SST

GTX JOHN · 09-15-2019, 12:44 PM

Is .171 on thrust side of cylinder.
That is the most significant spot.

littlemanjoe · 09-16-2019, 08:21 AM

Yes on the thrust side towards the bottom.

GTX JOHN · 09-16-2019, 12:45 PM

I would rather see it on the bottom than the top
for the thinner side.

My big blocks are thicker than that by .030/.040.

I think you would be fine with a filled block at that dimension.

Sometimes my filled blocks leaked better after they had been
reringed once....But they were still decent the first time.

littlemanjoe · 09-18-2019, 10:55 PM

Does anyone know if it is legal to put 4 bolt main cap in?
The type I'm looking at bolt through the side of the block.

GTX JOHN · 09-19-2019, 02:16 PM

Nope!

Really not needed in a Mopar 440 at this
power level in my opinion.

09-14-2019, 08:11 AM	#1
littlemanjoe Member Join Date: Feb 2018 Location: West Layfayette Posts: 125 Likes: 195 Liked 75 Times in 28 Posts	440 6 pack Putting together a stocker bottom end and I have 3 blocks to choose from. The best block checks out with a minimum of .171 cylinder wall thickness. Before machine work is done. My pistons are .060 over. The question I have is, would you fill the block or sleeve all eight cylinders? I've had someone tell me do not fill the blocks you will lose ring seal. Last edited by littlemanjoe; 09-14-2019 at 08:13 AM.

09-14-2019, 12:43 PM	#2
Bruce Fulper Senior Member Join Date: Aug 2004 Location: So. Cal. Posts: 651 Likes: 4 Liked 54 Times in 33 Posts	Re: 440 6 pack The reason to fill blocks is to preserve ring seal. Increases rigidity. Fill as high as possible leaving 1-1/2" at the top.

09-14-2019, 01:25 PM	#3
Jerry Terry Senior Member Join Date: Jul 2003 Location: Cincinnati Posts: 652 Likes: 6,086 Liked 450 Times in 133 Posts	Re: 440 6 pack We always ran filled blocks never had any problems with ring seal but i never had a mopar if that makes any difference. Jerry Retired 3490 3492 STK SS SST

09-15-2019, 12:44 PM	#4
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,728 Likes: 2,783 Liked 2,462 Times in 694 Posts	Re: 440 6 pack Is .171 on thrust side of cylinder. That is the most significant spot. __________________ John Irving 741 Stock 741 Super Stock

09-16-2019, 08:21 AM	#5
littlemanjoe Member Join Date: Feb 2018 Location: West Layfayette Posts: 125 Likes: 195 Liked 75 Times in 28 Posts	Re: 440 6 pack Yes on the thrust side towards the bottom.

09-16-2019, 12:45 PM	#6
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,728 Likes: 2,783 Liked 2,462 Times in 694 Posts	Re: 440 6 pack I would rather see it on the bottom than the top for the thinner side. My big blocks are thicker than that by .030/.040. I think you would be fine with a filled block at that dimension. Sometimes my filled blocks leaked better after they had been reringed once....But they were still decent the first time. __________________ John Irving 741 Stock 741 Super Stock

09-18-2019, 10:55 PM	#7
littlemanjoe Member Join Date: Feb 2018 Location: West Layfayette Posts: 125 Likes: 195 Liked 75 Times in 28 Posts	Re: 440 6 pack Does anyone know if it is legal to put 4 bolt main cap in? The type I'm looking at bolt through the side of the block.

09-19-2019, 02:16 PM	#8
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,728 Likes: 2,783 Liked 2,462 Times in 694 Posts	Re: 440 6 pack Nope! Really not needed in a Mopar 440 at this power level in my opinion. __________________ John Irving 741 Stock 741 Super Stock