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FFD · 08-17-2009, 04:54 PM

Does stock appearing mean no logo's on the outside of heads. While not trying to fool anyone a logo in the valve train area would make most happier well me anyways. How many pairs are you figuring to do on the first run. Guess the header question was answered is it any company

NHRASuperStock455SD · 08-17-2009, 05:26 PM

Quote:

Originally Posted by FFD

Does stock appearing mean no logo's on the outside of heads. While not trying to fool anyone a logo in the valve train area would make most happier well me anyways. How many pairs are you figuring to do on the first run. Guess the header question was answered is it any company

Havent decided yet on logos, we have left them off for now. If we do install one, it will be easy to remove. The race head version and blocks will definitely have it. The number of heads we run will depend on interest and purchases. We are actually going to run heads without water jackets first.

Lynn McCarty
CMI Motorsports
[email protected]
317-839-8378

79bluebird · 08-17-2009, 05:06 PM

you going to charge extra to mill or machine for the cc a person wants?

NHRASuperStock455SD · 08-17-2009, 05:28 PM

Quote:

Originally Posted by 79bluebird

you going to charge extra to mill or machine for the cc a person wants?

CNCing the combustion chamber we will charge a fee. The same for porting. Milling to smaller size comb chambers probably not.

Lynn

johnta1 · 08-17-2009, 05:46 PM

Quote:

How are you getting that bore size? 4.5 and 4.6 did you stretch the dimensions of the block?

I think this would be the main part of this: catywompus(ize)

NHRASuperStock455SD · 08-18-2009, 03:00 PM

Quote:

Originally Posted by NHRASuperStock455SD

CNCing the combustion chamber we will charge a fee. The same for porting. Milling to smaller size comb chambers probably not.

Lynn

To add to this information, it our opinion that a dish piston would be better than CNCing the combustion chamber. This is by virtue of quench phenomena. A dish piston will keep the combustion charge away from the cool side of the cylinder, and we get to keep the heart shaped combustion chamber which is more %CE to boot.

I know not all will want to buy new pistons, but it is something to think about if you have that option.

Lynn

NHRASuperStock455SD · 08-22-2009, 06:54 AM

Quote:

Originally Posted by NHRASuperStock455SD

To add to this information, it our opinion that a dish piston would be better than CNCing the combustion chamber. This is by virtue of quench phenomena. A dish piston will keep the combustion charge away from the cool side of the cylinder, and we get to keep the heart shaped combustion chamber which is more %CE to boot.

I know not all will want to buy new pistons, but it is something to think about if you have that option.

Lynn

That is reverse dome technically not dish piston.

Lynn

Region Warrior · 08-17-2009, 05:45 PM

Perhaps a roots blower intake is on the shelf somewhere...be slow my heart....

79bluebird · 08-17-2009, 05:53 PM

i would be looking for 90-95cc would like to put on a turbo motor.

NHRASuperStock455SD · 08-17-2009, 11:24 PM

Quote:

Originally Posted by 79bluebird

i would be looking for 90-95cc would like to put on a turbo motor.

I run 102 cc combustion chamber on my 73 455SD in my SSer(only boost I get is a Q-jet), you mean you are going to run more compression in a turbo? Geezzo-Pete. I have a set of 6H heads that are 122ccs I thought that would be the right number for a turbo.

I will have to get back to you on the bigger cc sizes.

Lynn

ponjohn · 08-17-2009, 06:31 PM

lynn what size comb chamber as cast or available?

ponjohn · 08-17-2009, 08:03 PM

Quote:

Originally Posted by ponjohn

lynn what size comb chamber as cast or available?

I read #44 thanks.

NHRASuperStock455SD · 08-18-2009, 03:42 PM

Chris I will call you and I will surely investigate this. Let me do some research before calling you. One thing I do need to clarify. If you look at the spark plug location in the picture below off the Dart website, this was what I was talking about for our plug location. My observation from your picture was that you had the plug exiting at the apex of the casting divide whereby incoming fuel charge would not be shielded. (I know it was a very small picture.) Could you explain further?

Here is the link: http://www.dartheads.com/products/cy...num-heads.html

Mo · 08-18-2009, 05:33 PM

How about the big block platinum head? It looks different from the small block.

blaktopr · 08-18-2009, 05:45 PM

Here are a pic and links Lynn.
Quote
"PLATINUMOne result of Dart's wet flow bench investigations was a major combustion chamber redesign for the Pro 1 Platinum-series heads. The spark plug is now located as high as possible within the chamber, promoting more-efficient combustion. "The flame only has to travel one way," says Dart's Tony McAfee, "rather than both up and down." The long side of the chamber (arrow) has also been redesigned to further unshroud the intake valve... "

http://www.dragracingonline.com/tech...wetflow-1.html

Jim Robertson · 08-22-2009, 05:57 PM

Lynn,
Significant effort. Thanks for spending your resources so we all can benefit. Great looking piece that should open some eyes. Continue down the path of casting quality and machining accuracy. The legend lives on. I will be purchasing a set...or more.

Jim
www.racev8s.com

JC455 · 08-24-2009, 03:05 PM

All I can say is WOW!!

NHRASuperStock455SD · 08-25-2009, 03:22 PM

Thanks John!

I have just contracted to do a short intake to fit under the hoods of stock cars. The intakes we are doing will look similar to these.

Region Warrior · 08-25-2009, 03:45 PM

Interesting runners on the 3rd pic.

Tom Vaught · 08-25-2009, 04:29 PM

Typical Ford Intake, Mike. Did not take people long to figure out the very short center runners were not happy on the old Ford stuff. Having the runners on 2 levels is not an issue either.

Tom Vaught

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