Whats the best Mopar head ever produced?

Posted By: W9 Dart

Whats the best Mopar head ever produced? - 07/06/12 03:55 PM

Stock, ported what ever.. whats the baddest head mopar ever made? BB, W8, W9, 426, Gen III 6.1, eagle, 6.4? Just curious..

I'm going out on a limb to say a ported 6.4 slightly out performs a ported 6.1.

Posted By: Steve1118

Re: Whats the best Mopar head ever produced? - 07/06/12 04:24 PM

426 Hemi. Can't argue with fifty years of results.

Posted By: Al_Alguire

Re: Whats the best Mopar head ever produced? - 07/06/12 04:57 PM

Ummmm...I think this is an obvious and easy one..
590+ CFM and they are making 1500HP natuarally aspirated from 500 cubes in Pro Stock with these things.

Posted By: W9 Dart

Re: Whats the best Mopar head ever produced? - 07/06/12 05:25 PM

Are those Mopar or aftermarket heads?

Posted By: Al_Alguire

Re: Whats the best Mopar head ever produced? - 07/06/12 05:39 PM

Mopar, part number in the lower right.

Posted By: 340man4ever

Re: Whats the best Mopar head ever produced? - 07/06/12 05:50 PM

Whatever is on Allen Johnsons Pro Stocker right now.........................

Posted By: Hemi Allstate

Re: Whats the best Mopar head ever produced? - 07/06/12 05:57 PM

Those are great pictures. I love seeing the inside workings of the engine.
At the risk of getting seriously flamed,,,,I have to ask, why is that engine/head called a Hemi? Other than to promote the name on new Mopar vehicles?
I don't see a hemispherical combustion chamber. Just spark plugs through the valves covers.

Posted By: rickseeman

Re: Whats the best Mopar head ever produced? - 07/06/12 06:03 PM

I am a 426 hemi guy but those heads do look tasty.

Posted By: Al_Alguire

Re: Whats the best Mopar head ever produced? - 07/06/12 06:03 PM

Marketing....And those are similar to what AJ runs on his Dodge. These were from Couglin block work by Roy.

Posted By: W9 Dart

Re: Whats the best Mopar head ever produced? - 07/06/12 06:54 PM

wow.. no kidding.. I'm nieve to think that the gen III Hemi heads are superior to the old school stuff.. lol

Posted By: MRMOPAR622

Re: Whats the best Mopar head ever produced? - 07/06/12 08:19 PM

Al,I did not seen any tie bars on the lifters,do they have the key way lifters like Jesel?

Posted By: Red440

Re: Whats the best Mopar head ever produced? - 07/06/12 08:49 PM

Hey Al, way kool man

thanks for sharing

Posted By: joshking440

Re: Whats the best Mopar head ever produced? - 07/06/12 09:02 PM

Quote:

wow.. no kidding.. I'm nieve to think that the gen III Hemi heads are superior to the old school stuff.. lol

those are HEMI99 Heads jason, off of a currentish prostock car....far from sold school...

Posted By: Al_Alguire

Re: Whats the best Mopar head ever produced? - 07/06/12 10:00 PM

Yes it uses the big Jesel Keyway lifters.

What Josh said. Not old school at all they are pretty much the cutting edge of cylinder head developement. Well these were 4 years ago anyway

Posted By: fishy340

Re: Whats the best Mopar head ever produced? - 07/06/12 10:54 PM

the more i see of Al's hemi the more i wish i had one...i just couldn't keep up the maint on it..sweet motor

Posted By: tjmarcus1

Re: Whats the best Mopar head ever produced? - 07/07/12 03:34 AM

sorry about being a hyjacker here, but how many rpm are the prostock hemis turning? and is aj running the new head?

Posted By: Al_Alguire

Re: Whats the best Mopar head ever produced? - 07/07/12 05:11 AM

We do not run NEAR the RPM they are. I have heard from some guys in the know that they are now approaching 11000 rpm and a couple are over that. BUt I have no first hand knowledge. Ours we shift at 9400 go through the traps at 9700 or so.

As for maintenance it has not been to bad. Vaveltrain stability is a big deal with them and once that gets worked out it has been reasonable. We managed to get 12 passes out of the last set of intake springs. The exhausts are still hanging in there at 16.

Posted By: fishy340

Re: Whats the best Mopar head ever produced? - 07/07/12 12:08 PM

AWESOME

Posted By: Diablo

Re: Whats the best Mopar head ever produced? - 07/09/12 02:03 AM

Im going to have to agree Al 100% These heads are certainly bad ass!

Mine are on the 5 inch BS block where ass the pro stock ones are on the 4.9.

Attached picture 7283594-photo(3).JPG

Posted By: Diablo

Re: Whats the best Mopar head ever produced? - 07/09/12 02:04 AM

pic valve train

Attached picture 7283597-photo(5).JPG