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Difference between 5.7 and 392
#1331486
11/06/12 02:58 PM
11/06/12 02:58 PM
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Joined: Jul 2007
Posts: 3,712
Sacramento, Ca
Darius
OP
master
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OP
master
Joined: Jul 2007
Posts: 3,712
Sacramento, Ca
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What is the difference between a 5.7 liter Hemi and the 392 available in a new Challenger? How many Cubic Inches are there in a 5.7? I'm pretty good at math, just don't know this formula.
If this conversion ends up fairly close, what did they do to the 392 to make it what it is compared to a 5.7?
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Re: Difference between 5.7 and 392
[Re: Darius]
#1331488
11/06/12 03:31 PM
11/06/12 03:31 PM
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Joined: Jan 2010
Posts: 329
Orange Park, FL
MRHWS
enthusiast
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enthusiast
Joined: Jan 2010
Posts: 329
Orange Park, FL
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I'm pretty sure the 392(6.4) evolved from the 6.1, not the 5.7.
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Re: Difference between 5.7 and 392
[Re: MRHWS]
#1331489
11/06/12 06:02 PM
11/06/12 06:02 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
I'm pretty sure the 392(6.4) evolved from the 6.1, not the 5.7.
5.7 is 3.92x3.58 B&S
6.1 is 4.06x3.58 B&S
6.4 (392) is 4.09x3.72 B&S
the 6.4 is a different block than the 6.1, as it has the different cam tunnel for the VVT cams and additional oil passages for MDS lifters like the 5.7
you CAN stroke a 5.7 to 392 CID with a .030" overbore and 4" stroke crank, FWIW....
besides the bore and stroke differences, the 6.4 has bigger valve and port heads, a different intake, and IIRC essentially factory short tube stainless steel headers, and a bigger cam than the 5.7
think of it like comparing a 318 to an E58 360....
Last edited by patrick; 11/06/12 06:04 PM.
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Re: Difference between 5.7 and 392
[Re: patrick]
#1331490
11/06/12 10:50 PM
11/06/12 10:50 PM
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Joined: Mar 2003
Posts: 1,728
ST clair shores MI
moretoys
top fuel
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top fuel
Joined: Mar 2003
Posts: 1,728
ST clair shores MI
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exhaust system is different. 6.4 has flapper valves in the pipe. The engines blocks come painted hemi orange, not basic black like like a 5.7. over 100 hp. difference.
Last edited by moretoys; 11/06/12 10:50 PM.
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