Super Stock head and block question

EdgarTurbo · 03-19-2010, 09:35 AM

Hello Guys,

I have a question regarding the block and head. In the rulebook said that the piston needs to have the stock compression but can I deck the block and mill the heads to increase compression on the engine or that is prohibited? I can really find if that is permitted. By the way I'm building a Ford DOHC modular engine. Thanks in advance for your help!

John Quinn · 03-19-2010, 11:07 AM

Quote:

Originally Posted by EdgarTurbo

Hello Guys,

I have a question regarding the block and head. In the rulebook said that the piston needs to have the stock compression but can I deck the block and mill the heads to increase compression on the engine or that is prohibited? I can really find if that is permitted. By the way I'm building a Ford DOHC modular engine. Thanks in advance for your help!

They measure the combustion chamber CC's and have specifications for deck height and gasket thickness. You have to meet those numbers.

Read your engines specifications on the NHRA website, you will find all the proper numbers there.

EdgarTurbo · 03-19-2010, 07:05 PM

Thanks for the response John. Yep, I look on the website but the casting number on the NHRA Tech Specs do not mach the number on the Stock/Super Stock Cylinder Head Volumes; I could not find the casting number there. RF-2C5EC064-AF is the casting number for the heads but all the casting numbers posted in the website are C5AE, C5AE-B, C5AE-F, C5AE-6090F, C5AE-6090F, now which one is the number for my heads?

rawhide · 03-20-2010, 10:51 PM

Quote:

Originally Posted by EdgarTurbo

Thanks for the response John. Yep, I look on the website but the casting number on the NHRA Tech Specs do not mach the number on the Stock/Super Stock Cylinder Head Volumes; I could not find the casting number there. RF-2C5EC064-AF is the casting number for the heads but all the casting numbers posted in the website are C5AE, C5AE-B, C5AE-F, C5AE-6090F, C5AE-6090F, now which one is the number for my heads?

Edgar,
The numbers that you found are all 1965 casting numbers. The number that you listed for your head is a 2003-2004 head. The classifcation guide shows the piston .008" in the hole and a 17cc dish in it. The head number you gave is for the 390 hp supercharged engine.
thanks, Roland

EdgarTurbo · 03-21-2010, 09:46 PM

OOOppss, thanks Roland for the correction, actually I was looking for 03-04 mach-1 heads that are pretty much the same one that came on the cobra and those were the closest numbers to the casting numbers I got, thanks again for the correction. So I guess I can do nothing with the block or heads to increase some compression or nobody want to reveal a couple of secrets....

03-19-2010, 09:35 AM	#1
EdgarTurbo Junior Member Join Date: Sep 2009 Posts: 25 Likes: 0 Liked 0 Times in 0 Posts	Super Stock head and block question Hello Guys, I have a question regarding the block and head. In the rulebook said that the piston needs to have the stock compression but can I deck the block and mill the heads to increase compression on the engine or that is prohibited? I can really find if that is permitted. By the way I'm building a Ford DOHC modular engine. Thanks in advance for your help!

03-19-2010, 07:05 PM	#3
EdgarTurbo Junior Member Join Date: Sep 2009 Posts: 25 Likes: 0 Liked 0 Times in 0 Posts	Re: Super Stock head and block question Thanks for the response John. Yep, I look on the website but the casting number on the NHRA Tech Specs do not mach the number on the Stock/Super Stock Cylinder Head Volumes; I could not find the casting number there. RF-2C5EC064-AF is the casting number for the heads but all the casting numbers posted in the website are C5AE, C5AE-B, C5AE-F, C5AE-6090F, C5AE-6090F, now which one is the number for my heads?

03-21-2010, 09:46 PM	#5
EdgarTurbo Junior Member Join Date: Sep 2009 Posts: 25 Likes: 0 Liked 0 Times in 0 Posts	Re: Super Stock head and block question OOOppss, thanks Roland for the correction, actually I was looking for 03-04 mach-1 heads that are pretty much the same one that came on the cobra and those were the closest numbers to the casting numbers I got, thanks again for the correction. So I guess I can do nothing with the block or heads to increase some compression or nobody want to reveal a couple of secrets....