Got our late 5.7 Hemi heads today! - Moparts Forums

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Re: Got our late 5.7 Hemi heads today! [Re: Pat7272] #1229975 06/27/12 08:42 PM 06/27/12 08:42 PM
Joined: Apr 2007 Posts: 2,826 NY usa 5 540challenger master
540challenger master 5 Joined: Apr 2007 Posts: 2,826 NY usa	Quote: Quote: We picked up 30rwhp and 28rwtq from an almost bone stock 392 with only ported 6.4 heads. 6.4 is a good number for hemi's, with the apaches or nor. Are the 6.4 heads significantly better than the 6.1? How about the Apache? Stock they flow a little more on the intake side however they a large 2.14 vavlue which should help out low and lift flow numbers over the 6.1 plus the fact the 6.4 has a closed chamber.

Re: Got our late 5.7 Hemi heads today! [Re: Pat7272] #1229976 06/27/12 08:48 PM 06/27/12 08:48 PM
Joined: Jun 2005 Posts: 2,776 Ontario Canada M MattW master
MattW master M Joined: Jun 2005 Posts: 2,776 Ontario Canada	Quote: Quote: We picked up 30rwhp and 28rwtq from an almost bone stock 392 with only ported 6.4 heads. 6.4 is a good number for hemi's, with the apaches or nor. Are the 6.4 heads significantly better than the 6.1? How about the Apache? Depending on application. 6.4 heads are Apache heads. IMO the 6.4 is too big but I'm no expert. Matt

Re: Got our late 5.7 Hemi heads today! [Re: 540challenger] #1229977 06/27/12 09:28 PM 06/27/12 09:28 PM
Joined: Apr 2009 Posts: 3,415 Toronto M mshred master
mshred master M Joined: Apr 2009 Posts: 3,415 Toronto	thanks for the info guys

Re: Got our late 5.7 Hemi heads today! [Re: MattW] #1229978 06/27/12 09:44 PM 06/27/12 09:44 PM
Joined: Jan 2003 Posts: 945 La Vernia, Texas Pat7272 super stock
Pat7272 super stock Joined: Jan 2003 Posts: 945 La Vernia, Texas	Quote: Depending on application. 6.4 heads are Apache heads. IMO the 6.4 is too big but I'm no expert. Matt My mistake, I'm still trying to learn these new HEMIs on paper. How do the 6.4 Apaches compare to the 5.7 Eagle heads? On a 6.4L + engine.

Re: Got our late 5.7 Hemi heads today! [Re: Pat7272] #1229979 06/27/12 09:53 PM 06/27/12 09:53 PM
Joined: Sep 2003 Posts: 10,645 Houston, Tx A AlexP I Live Here
AlexP I Live Here A Joined: Sep 2003 Posts: 10,645 Houston, Tx	The Eagles are my favorite head for the Hemi Platform. They've for a tight chamber, a reasonable sized intake port and the D-port exhaust from the 6.1. They've done amazing things on a 426 in 4600 lb raceweight cars (I don't know if you can really call 4600lbs a raceweight lol) The 6.4 head is a more modern version of the 6.1...Not to say the 6.1 is "bad" but I think big ports and peaky power are the norm now of days. Each head has its purpose. If you're starting from scratch, there is no reason for price or performance that you should start with anything but BNIB eagle or apache. My Build thread: Let the hemi swap begin! 1968 wanna be pro touring whatchamacallit with some fancy stuff and a new roof skin.

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