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Re: What mopar engine and trans for average street rod?
[Re: dOrk !]
#192705
01/13/09 09:44 PM
01/13/09 09:44 PM
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Joined: Sep 2005
Posts: 12,481
Chino Valley
RodStRace
I Live Here
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I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
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 small block and 727. They fit around the steering column on the fat fender cars when you use an A body exhaust manifold and move them over an inch or so. Not sure on the trucks, but should be about the same... Just bought a second mid-80s van complete and running for 300 bucks. You want the truck oil pan too.
Last edited by RodStRace; 01/13/09 09:45 PM.
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Re: What mopar engine and trans for average street rod?
[Re: Flipper1938]
#192706
01/13/09 09:47 PM
01/13/09 09:47 PM
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Joined: Mar 2005
Posts: 3,445
N.Wilkesboro,NC
DusterKrazy
master
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master
Joined: Mar 2005
Posts: 3,445
N.Wilkesboro,NC
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Quote:
What is mopar equivalent to a chevy 350/350 combo?
Looking for a cheap all, purpose combo for the 41 dodge pickup and as of now, I do not own any mopar engines of transmissions (or speed parts for either).
360's are a great choice but a 318 is a great engine that can be had cheap. My '46 dodge has a 318/904 in it that runs great and it only set me back $150. Lots of times you can get a 318 for free! Just a thought.
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Re: What mopar engine and trans for average street rod?
[Re: DusterKrazy]
#192707
01/13/09 09:54 PM
01/13/09 09:54 PM
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Joined: Dec 2006
Posts: 228
Kentucky
Flipper1938
OP
enthusiast
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OP
enthusiast
Joined: Dec 2006
Posts: 228
Kentucky
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Quote:
Quote:
What is mopar equivalent to a chevy 350/350 combo?
Looking for a cheap all, purpose combo for the 41 dodge pickup and as of now, I do not own any mopar engines of transmissions (or speed parts for either).
360's are a great choice but a 318 is a great engine that can be had cheap. My '46 dodge has a 318/904 in it that runs great and it only set me back $150. Lots of times you can get a 318 for free! Just a thought.
Where do the extra 42 cubic inches come from (over a 318)? bore, stroke, or both?
What is the difference between a 727 and a 904 trans?
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Re: What mopar engine and trans for average street rod?
[Re: Flipper1938]
#192708
01/13/09 10:00 PM
01/13/09 10:00 PM
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Joined: Mar 2005
Posts: 3,445
N.Wilkesboro,NC
DusterKrazy
master
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master
Joined: Mar 2005
Posts: 3,445
N.Wilkesboro,NC
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Quote:
Quote:
Quote:
What is mopar equivalent to a chevy 350/350 combo?
Looking for a cheap all, purpose combo for the 41 dodge pickup and as of now, I do not own any mopar engines of transmissions (or speed parts for either).
360's are a great choice but a 318 is a great engine that can be had cheap. My '46 dodge has a 318/904 in it that runs great and it only set me back $150. Lots of times you can get a 318 for free! Just a thought.
Where do the extra 42 cubic inches come from (over a 318)? bore, stroke, or both?
What is the difference between a 727 and a 904 trans?
bore and stroke both...360= 4.00 bore and 3.58 stroke
318=3.91 bore 3.31 stroke...
the 727 is a beefier trans in stock form and identified by the longer tailshaft. Probably a good 6 inches or so longer and also is alot heavier than the 904. It takes more power to turn a 727 than a 904.
A 904 is lighter trans w/a shorter tailshaft and takes only about 25hp to turn as to where a 727 takes almost 50. They are pretty reliable and can be made everybit as strong as the 727. I use a 904 in almost everything. I like to drag race with them because of the weight difference especially.
hope this helps 
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Re: What mopar engine and trans for average street rod?
[Re: mike_vango]
#192712
01/14/09 02:19 PM
01/14/09 02:19 PM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
a poly 318 would make you way cooler on cruise night!!!
They ARE a cool engine but .... parts are ruff to get PLUS they are a bigger, heavier and wider engine than a 318/340/360.
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Re: What mopar engine and trans for average street rod?
[Re: dOrk !]
#192713
01/14/09 03:58 PM
01/14/09 03:58 PM
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Joined: Nov 2008
Posts: 1,565
tennessee
pushbutton
pro stock
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pro stock
Joined: Nov 2008
Posts: 1,565
tennessee
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Quote:
Quote:
a poly 318 would make you way cooler on cruise night!!!
They ARE a cool engine but .... parts are ruff to get PLUS they are a bigger, heavier and wider engine than a 318/340/360.
Good Rat Rod mtr. 
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Re: What mopar engine and trans for average street rod?
[Re: pushbutton]
#192714
01/14/09 04:59 PM
01/14/09 04:59 PM
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Joined: Dec 2006
Posts: 228
Kentucky
Flipper1938
OP
enthusiast
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OP
enthusiast
Joined: Dec 2006
Posts: 228
Kentucky
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Quote:
Good Rat Rod mtr.
This one is not going to be a rat rod.
The truck is a rust free Kansas truck and it will be finished nicely (shiny paint and Halibrand wheels).
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Re: What mopar engine and trans for average street rod?
[Re: Flipper1938]
#192715
01/14/09 09:22 PM
01/14/09 09:22 PM
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Joined: Jan 2003
Posts: 10,555
Freeport IL USA
poorboy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,555
Freeport IL USA
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Quote:
What are the practical RPM limits of a basicly stock 318 or 360? Any real weaknesses in the short block?
How big of a cam can you stick in one without spending $$$$?
RPM limits of a stock small block are in the 5,000 range, depending on the condition of the motor. The biggest concern with the Mopar small blocks are timing chain issues with a motor in the 125,000-150,000 mile range. The amount of care the motor has seen is another consideration with a high mileage motor. 318s are tough, 360s a little bit weaker in the crankshaft. Either will out live most GM smallblocks.
Pre Magnium small blocks: The 318s have small original 2bbl carbs with restrictive single exhaust system. They also have small intake ports and tend to run out of air around 5,000 rpm, most stock 318s couldn't rev high enough to hurt themselves. A 4bbl carb and dual exhaust through even the stock exhaust manifolds and a good double roller timing chain & gears can really wake up a 318. If your planning on turning some rpms, or do some serious racing, you will want to step up to the 340/360 heads or to the newer maginum heads. A 340 cam really wakes up a 318, but with springs and clearance checking, you can do up to the mid 450s lift without much fuss. Factory Mopar small blocks have a decent factory balance, once you get past the intake and exhaust restrictions, the valve gear and oil capacity will be your rpm limiting factors. Past 5500-6000 is really pushing the stock rod bolts and lubrication system, imho.
A pre-maginum 360 is a different critter. Most are low compression, but all have the bigger port heads, and come with either a large 2bbl or a 4bbl carb from the factory. 360s have a cast crankshaft, not an issue with breaking, but seem to wear more then the 318 cranks. In factory trim, a 360 can turn enough rpms to cause damage. Cam choice is about the same as a 318, but the bigger port heads and more cubic inches provides pretty stout performance pretty cheaply. Both weigh about 50lbs more then a sbc, but have angle plug heads from the factory.
I perfer a 727 over the 904. Back in the day, I would heavily abuse my cars.  I could break built up 904s, but really had to give extra effort to break 727s.  Gene
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Re: What mopar engine and trans for average street rod?
[Re: dOrk !]
#192717
02/15/09 09:45 PM
02/15/09 09:45 PM
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Joined: Feb 2009
Posts: 91
Peoples Republic of Oregon
wayfarer
member
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member
Joined: Feb 2009
Posts: 91
Peoples Republic of Oregon
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Quote:
Quote:
a poly 318 would make you way cooler on cruise night!!!
They ARE a cool engine but .... parts are ruff to get PLUS they are a bigger, heavier and wider engine than a 318/340/360.
Some parts are a bit harder to locate but all parts are available. Bigger? same short block different style head that only looks bigger; heavier? maybe 30lbs due to the heads and intake; wider? looks are deceiving.
The 62-66 short block is essentially the same as post 66. And yes, you can use the stroker cranks in them!!
These engines are bullet proof. Many times they are very cheap if not free just because they look different.
.
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Re: What mopar engine and trans for average street rod?
[Re: RUMBLON]
#192719
02/15/09 11:17 PM
02/15/09 11:17 PM
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Joined: Jan 2007
Posts: 1,039
Redwood City Ca.
B1arno
super stock
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super stock
Joined: Jan 2007
Posts: 1,039
Redwood City Ca.
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Quote:
BLOWN 392 HEMI--LAWFISH 
What he said! 
Arno
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Re: What mopar engine and trans for average street rod?
[Re: B1arno]
#192720
02/16/09 12:45 AM
02/16/09 12:45 AM
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Joined: Aug 2006
Posts: 1,884
Tracy CA
rabid scott
"You're Where?"
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"You're Where?"
Joined: Aug 2006
Posts: 1,884
Tracy CA
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I'll second what Wayfarer said about the Poly 318. They are hands-down the second coolest looking Mopar engine, a Hemi would come first. I originally wanted a Poly 318 for my Model A Roadster but couldn't find one locally that some Mopar guy wasn't asking smokin' crack prices for. It's a freakin' stock 2 barrel Poly, not a Hemi. Anywho.... There are two problems with the Poly: 1. To get any real power out of them you have to dump cubic assloads of money into them. Sure, lots of parts interchange with the LAs, but no matter how cool they look, those cylinder heads choke the crap out of the engine. 2. Cool valve covers and cool inductions are rare and expensive. The guys that rod these covet stuff like that. I don't think any off the shelf headers exist for them either, but I never checked. I build my own. As far as your build is concerned, if you're just going to drive it around go for a 318. Less cubes equal better mileage. 318s have the same stroke as a 340 so you can build it to wind out, for those occasion times when you want to abuse it. Overdrive automatics are available, as are OD stick shifts if your car will be sportin' a "Man pedal".
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Re: What mopar engine and trans for average street rod?
[Re: rabid scott]
#192721
02/16/09 01:06 AM
02/16/09 01:06 AM
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Joined: Sep 2003
Posts: 1,295
Hawley, Texas
shinnery
super street
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super street
Joined: Sep 2003
Posts: 1,295
Hawley, Texas
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My  I always thought the Poly Dodges (315,325) and Poly Chryslers (301,331,354) looked better than the Plymouths with the wimpy scallops on the valve covers. Bryce 
Last edited by shinnery; 02/16/09 01:09 AM.
Every electronic device is manufactured with smoke stored deep inside...
only a true genius can find a way to set it free.
The most terrifying words in the English language are: "I'm from the government and I am here to help!"
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Ron...
