Re: Picking Old Geezers Brains
[Re: Norm]
#1474229
08/18/13 03:51 PM
08/18/13 03:51 PM
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Anonymous
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Almost nothing interchanges between Dodge, DeSoto and Chrysler early Hemis. (But some 55-6 Plymouths and some low-line 57 DeSotos used Dodge poly engines.) What were they thinking? Probably copying General Motors, because at that time each GM make designed and built its own engines. Chrysler saw the light by the late 50's; GM finally woke up a couple decades later.
Bore center-to-center distance for the three Mopar early hemi engine families are:
Dodge: 4.1875
DeSoto: 4.3125
Chrysler: 4.5625
Obviously, with cylinders a different distance apart, heads, intake manifolds and cranks cannot interchange. There are also low deck and raised deck versions of the Dodge and DeSoto hemis, and raised port head versions of the Chrysler hemis, so intake manifolds don't all interchange even within the three engine families.
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Re: Picking Old Geezers Brains
[Re: Norm]
#1474233
08/19/13 03:14 PM
08/19/13 03:14 PM
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Joined: Dec 2004
Posts: 1,757 levittown pa
fstfish66
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I still don't have the car at my shop yet but it won't be long. The 392 hemi I had lined up is no longer available. Don't ask. I know of another 392 that's in a late 50's 2 1/2 ton farm truck that runs perfect but the farmer won't get rid of it. I don't blame him. My car has the 325 poly head engine and from what I read the block will also accept hemi heads. Of course the pistons, valve gear, pushrods, etc. would also have to be changed. Is this true? If so which hemi heads and manifolds will work? I just want a hemi under the hood!
norm,, sorry to hear you lost the 392..it is true the early dodge,desoto ,chrysler poly motors not the 318 poly are the same block as the hemi,,parts from dodge or desoto or chrysler do not inter change,,except for the dizzy in a few,, you will need the hemi heads and pistons to convert the poly to the hemi,,you can get pistons at egge machine shop,,,new,,, you will need to find a set of heads,,start diging the internet,,,E BAY,,, or join the hot heads forum they have a question,,,and classified section for parts,,www,hothemiheads.com a guy calls him self TRWATERS deals with the early hemis,,he is on this site also,,,i do not know if the intake from the poly will fit the hemi heads,,you would like to think it would,,,if it does,,,and if your intake is a 2 bbl,,, trwaters does a conversion on the cast iron intake from 2 to 4 bbl,, if its a dodge or chrysler hemi intakes are available new aluminum and affordable,,, for the 325 dodge u lucky dog,,,it is the same deck height as the 315 dodge,, i dont know if the valves are bigger from the 315 to the 325, a set of 315 heads can be machined to take the bigger valves if you fine a set of those,,, happy hunting,, and get out your credit card,,,,,
1966 barracuda prostreeter super charged 340(SOLD) 1940 dodge coupe 241 hemi street rod 2014 ram express hemi 4x4 dailey driver 2015 cherokee 2013 R/T classic
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Re: Picking Old Geezers Brains
[Re: Norm]
#1474234
08/19/13 03:18 PM
08/19/13 03:18 PM
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Posts: 1,757 levittown pa
fstfish66
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So you are saying that hemi parts that came in a Dodge(241, 270, 315, 325) are the only parts that will possibly fit a 58 325 engine. I know that Chrysler and Desoto hemi's are different cubic inches than a Dodge but figured the heads and intake manifolds were interchangeable. If not what were they thinking back then. Oh well, the search is still on! Thanks for the info!
yes what were they thinking,,, that is why the early hemi program ended back then too many differnt parts made it to costly,,so they ended it till 1964 when they put a set of hemi heads on the 426 max wedge motors,,,and said here we come,,,,,
1966 barracuda prostreeter super charged 340(SOLD) 1940 dodge coupe 241 hemi street rod 2014 ram express hemi 4x4 dailey driver 2015 cherokee 2013 R/T classic
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Re: Picking Old Geezers Brains
[Re: dogdays]
#1474235
08/19/13 03:22 PM
08/19/13 03:22 PM
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Posts: 1,757 levittown pa
fstfish66
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Let's not forget the A engine poly, 4.46" bore spacing, which made it all the way to present, IIRC.
There is no reason why a 5.7 wouldn't do the trick. It won't cost any more by the timr you get done buying all those expensive Firepower parts, and it weighs nearly 300 lb less.
R. (just turned 59 which makes me a geezer, too!)
very true the modern hemi will cost less if you buy it right,,, but nothing has the eye candy or bling as an early hemi,,,
1966 barracuda prostreeter super charged 340(SOLD) 1940 dodge coupe 241 hemi street rod 2014 ram express hemi 4x4 dailey driver 2015 cherokee 2013 R/T classic
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Re: Picking Old Geezers Brains
[Re: Norm]
#1474237
08/20/13 02:08 AM
08/20/13 02:08 AM
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fstfish66
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Exactly! Nothing has the eye candy or bling as an early hemi. The 325 in my 58 Dodge is a factory four barrel and came with dual exhaust. If I can find all the parts necessary for the hemi conversion I will take that route. I prefer a 392 and have not given up on one yet. If I put a 5.7 in then it will be fuel injected not carburetor.
NORM, not a thing wrong with a 325 dodge,,very sought after motor,,if u look u will find a set of heads they are out there,,cant imagine why no one is re popping heads wit hall the motors out there in hot rods,,rat rods etc,,,some one is gona read this and say WTH,,, if i remember correctly,,if you look in a motor manual book that shows the hemi and poly horse power,,,the poly weighs less and i think puts out a little bit more HP compared to the hemi,,mind boggling i know,, i may have to look in my book and pritn the page,,i know my memory isnt that bad yet,,but the HEMI just has the koool looks,,,and can be made to put out more then stated..if u have a big bank account,,,lol
1966 barracuda prostreeter super charged 340(SOLD) 1940 dodge coupe 241 hemi street rod 2014 ram express hemi 4x4 dailey driver 2015 cherokee 2013 R/T classic
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Re: Picking Old Geezers Brains
[Re: Norm]
#1474241
08/20/13 12:41 PM
08/20/13 12:41 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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Couple of 392's, again, I know nothing about them. http://lubbock.craigslist.org/pts/3931110391.htmlAgain, kinda pricey, imo. For me, I'd just put a new Hemi in for these prices.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Picking Old Geezers Brains
[Re: Norm]
#1474243
08/20/13 02:00 PM
08/20/13 02:00 PM
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Joined: Sep 2007
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You could always see what Craigslist has around you. There was a disassembled 354 for $1600 in the list, but since you wanted a 392 I didn't post a link. http://sanantonio.craigslist.org/pts/3931531238.htmlPosted July 12 so I dunno if it;s still available, but at least it'll give you an idea as to what people are asking.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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