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old 392 hemi? #900041 01/09/11 02:35 AM 01/09/11 02:35 AM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 OP master
emarine01 OP master E Joined: Jan 2007 Posts: 3,695 nc	What is a old 392... Big block... small block.... or something in between, it kinda looks like a small block with lots of deck height

Re: old 392 hemi? [Re: emarine01] #900042 01/09/11 02:45 AM 01/09/11 02:45 AM
Joined: Aug 2003 Posts: 43,180 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,180 Bend,OR USA	Quote: What is a old 392... Big block... small block.... or something in between, it kinda looks like a small block with lots of deck height It's a 392, not a BB, not a SB The original Chrysler Hemi V8s started life as a 331 C.I. passnger car motor,not considered for racing until 1955 And then things went crazy Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: old 392 hemi? [Re: Cab_Burge] #900043 01/09/11 03:38 AM 01/09/11 03:38 AM
Joined: Jun 2005 Posts: 6,257 gulfport, ms, west mi rowin4 master
rowin4 master Joined: Jun 2005 Posts: 6,257 gulfport, ms, west mi	It may not be a big block or a small block but every one will agree their a heavy block it's ok to butt heads, just don't do it with a butthead

Re: old 392 hemi? [Re: rowin4] #900044 01/09/11 04:55 AM 01/09/11 04:55 AM
Joined: Sep 2008 Posts: 2,840 Flint, Michigan B1Fish540 master
B1Fish540 master Joined: Sep 2008 Posts: 2,840 Flint, Michigan	I consider the bore space as the indicator of small block or BIG block. heres is some info i got from the rodders forum: Quote: 325 Dodge hemi already has a 3.80" stroke. To get 390 cubes, you'd need about a 4.5" stroke. Problem with the early Dodge hemi is that its bore center-to-center distance(bore space) - 4.1875 inches - is one of the smallest of any V-8 ever (the Ford 4.6-5.4 modular V-8 is smaller). By comparison, a SBC is 4.40 inches, SB Mopar is 4.46, and a BB Mopar is 4.80 inches. So all the early Dodge hemis are small-bore engines, and the small bore limits its cubic inch potential. The early De Soto hemi was also limited in size potential, just not quite as limited as the Dodge. Its 4.3125" bore center distance you will note is still less than either a small block Chevy or Mopar. And just FYI, the Chrysler 331-354-392 hemi had a 4.5625" bore spacing. So, like Cab said, its in between a BB and a SB...interstingly, its actually about .200 closer to a small block!

Re: old 392 hemi? [Re: emarine01] #900045 01/09/11 05:46 AM 01/09/11 05:46 AM
Joined: Nov 2003 Posts: 1,772 York,Pa S Slap Shot top fuel
Slap Shot top fuel S Joined: Nov 2003 Posts: 1,772 York,Pa	a small block mopar trans will bolt up to it using a adapter plate

Re: old 392 hemi? [Re: Slap Shot] #900046 01/09/11 06:05 AM 01/09/11 06:05 AM
Joined: Sep 2009 Posts: 1,805 ky hills thehemikid top fuel
thehemikid top fuel Joined: Sep 2009 Posts: 1,805 ky hills	...Its also considered a raised deck @ 10.87", ~1/2" over the 354. ...Memory is bad, but seems like the sb timing set & dizzy will work on it.

Re: old 392 hemi? [Re: emarine01] #900047 01/09/11 09:56 AM 01/09/11 09:56 AM
Joined: Oct 2007 Posts: 4,206 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,206 New York	The tooling is far closer to LA: rear distributor, cam to crank distance, oil pump location. More data from my site: http://victorylibrary.com/mopar/m-table-c.htm#Dodge Boffin Emeritus

Re: old 392 hemi? [Re: polyspheric] #900048 01/09/11 12:26 PM 01/09/11 12:26 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 OP master
emarine01 OP master E Joined: Jan 2007 Posts: 3,695 nc	Thankx Jeff... good info .... I see some around 416 cubes floating around. Can you get any rpm out of that set up, it seems like a small block with a long rod, Do they make lighter parts, Alu heads & intake? How far can you push the bore size? Are the factory cranks forged? Last edited by emarine01; 01/09/11 12:43 PM.

Re: old 392 hemi? [Re: emarine01] #900049 01/09/11 01:22 PM 01/09/11 01:22 PM
Joined: Dec 2009 Posts: 284 STL ,MO H Handygun enthusiast
Handygun enthusiast H Joined: Dec 2009 Posts: 284 STL ,MO	It's an outgrowth of Chryslers first OHV v-8, there are alum heads&intakes new from Hot Heads, it would have to be in history second only to the 426 style Hemi in Top fuel and Funnycar wins. There is a large contingent that think it's the best V-8 ever made as engineering ruled over cost. Racers& upper end racing parts manufacturers who made thier bones with the early Hemi is a who's who of drag racing.Today expect to spend alot of cash and have adapters that bolt to adapters to run a 92' with modern parts.But it can be done.

Re: old 392 hemi? [Re: Handygun] #900050 01/09/11 02:34 PM 01/09/11 02:34 PM
Joined: Oct 2007 Posts: 4,206 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,206 New York	The 426 designers didn't have the clean sheet of paper to work with, and the valve gear is a compromise to use as much RB tooling as possible. Boffin Emeritus

Re: old 392 hemi? [Re: polyspheric] #900051 01/09/11 02:36 PM 01/09/11 02:36 PM
Joined: Mar 2005 Posts: 862 Iowa State fan kilroy super stock
kilroy super stock Joined: Mar 2005 Posts: 862 Iowa State fan	You can use sb spec springs in stock application, sb distributor, sb timing chain also. 1973 Charger, former SE, former auto I'm not trying to be difficult, it comes naturally....

Re: old 392 hemi? [Re: kilroy] #900052 01/09/11 02:48 PM 01/09/11 02:48 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 OP master
emarine01 OP master E Joined: Jan 2007 Posts: 3,695 nc	hunting around the net it seems that most of the 392 builds favored older technology, forced induction or fuel injection. Anyone find a newer build that's NA using newer parts, Seems like if the heads are around you could make some real power from that block with a single 4.

Re: old 392 hemi? [Re: emarine01] #900053 01/09/11 02:52 PM 01/09/11 02:52 PM
Joined: Mar 2005 Posts: 862 Iowa State fan kilroy super stock
kilroy super stock Joined: Mar 2005 Posts: 862 Iowa State fan	the Hot Heads guys made great power out of a 331 for the Engine Master challenge, given it was a single 4 but.... still NA 1973 Charger, former SE, former auto I'm not trying to be difficult, it comes naturally....

Re: old 392 hemi? [Re: kilroy] #900054 01/09/11 08:33 PM 01/09/11 08:33 PM
Joined: Jan 2003 Posts: 2,129 Vermont T TrWaters top fuel
TrWaters top fuel T Joined: Jan 2003 Posts: 2,129 Vermont	Think of it as a tall deck small block. An all new aluminum early hemi 392 block is due out later this year. TR Waters

Re: old 392 hemi? [Re: TrWaters] #900055 01/09/11 08:59 PM 01/09/11 08:59 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 OP master
emarine01 OP master E Joined: Jan 2007 Posts: 3,695 nc	Small block Mopars give up 40 cubes to Chevy and 30 cubes to ford, I guess the new hemis are small blocks This old 392 hemi being in between sounds more like racing politics to me

Re: old 392 hemi? [Re: emarine01] #900056 01/09/11 09:57 PM 01/09/11 09:57 PM
Joined: Sep 2008 Posts: 2,840 Flint, Michigan B1Fish540 master
B1Fish540 master Joined: Sep 2008 Posts: 2,840 Flint, Michigan	Quote: Small block Mopars give up 40 cubes to Chevy and 30 cubes to ford, I guess the new hemis are small blocks This old 392 hemi being in between sounds more like racing politics to me no, the SB mopars actually are bigger than the Chev( and will accept a bigger valve), thats actually helped them in nascar. The SB mopars dominate in World of Outlaw racing as well.

Re: old 392 hemi? [Re: B1Fish540] #900057 01/09/11 10:16 PM 01/09/11 10:16 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 OP master
emarine01 OP master E Joined: Jan 2007 Posts: 3,695 nc	I was thinking about the old factory blocks 400 chev, 390 ford, 360 mopar, I cant run a race block in my class, seems the 392 fits the factory block part

Re: old 392 hemi? [Re: emarine01] #900058 01/10/11 12:01 AM 01/10/11 12:01 AM
Joined: Sep 2008 Posts: 2,840 Flint, Michigan B1Fish540 master
B1Fish540 master Joined: Sep 2008 Posts: 2,840 Flint, Michigan	Oh, OK. Never heard of a 390 Ford SB, but that doesnt mean anything, lol. I think the 400 chev was possble because it had siameezed bores.(no water jacket)

Re: old 392 hemi? [Re: B1Fish540] #900059 01/10/11 12:02 AM 01/10/11 12:02 AM
Joined: May 2004 Posts: 12,388 Taxes & Virus's R-US, NY Dragula I Live Here
Dragula I Live Here Joined: May 2004 Posts: 12,388 Taxes & Virus's R-US, NY	They are expensive tall deck small blocks.... '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

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