The Forward Look Network
The Forward Look Network
Search | Statistics | User Listing Forums | Chat | eBay | Calendars | Albums | Skins | Language
You are logged in as a guest. ( logon | register )

318 Poly to 413.... torsion bar question.....
Jump to page : 1
Now viewing page 1 [50 messages per page]
View previous thread :: View next thread
   Forward Look Technical Discussions -> Steering and SuspensionMessage format
 
pistolgrip
Posted 2018-07-02 5:45 PM (#565892)
Subject: 318 Poly to 413.... torsion bar question.....


Veteran

Posts: 112
100
Location: Maryland
All,

I'm planning to do a 413 long ram swap on my Poly 318 powered '61 Plymouth Wagon. Rumor has it that it would be a good idea to upgrade the torsion bars. I was told to either find a pair of big block bars, or use Imperial bars. If true, do they sell them new? Where can you get them used? Any info or input would be appreciated.


Rob
Top of the page Bottom of the page
ttotired
Posted 2018-07-02 7:42 PM (#565898 - in reply to #565892)
Subject: Re: 318 Poly to 413.... torsion bar question.....



Expert 5K+

Posts: 8273
5000200010001001002525
Location: Perth Australia
Not sure if you really need to.

The 318 poly is quite a lump of an engine, I don't think the BB was that much heavier

Just check the weights, but this is all said without checking a parts book which is where the answer lies

Top of the page Bottom of the page
pistolgrip
Posted 2018-07-03 10:50 AM (#565943 - in reply to #565892)
Subject: Re: 318 Poly to 413.... torsion bar question.....


Veteran

Posts: 112
100
Location: Maryland
Thanks for the info! Yeah, it looks like the 413 is about 70lbs heavier than the poly 318...... according to the internet!
Top of the page Bottom of the page
mikes2nd
Posted 2018-07-03 2:14 PM (#565954 - in reply to #565892)
Subject: Re: 318 Poly to 413.... torsion bar question.....


Expert

Posts: 3135
2000100010025
yeah i am using 326 torsion bars on my dodge for the 392 hemi. Its only 100 lbs heavier but I easily took 100 lbs off(intake, starter, manifold, water pump) others...

Top of the page Bottom of the page
1960fury
Posted 2018-07-03 2:40 PM (#565957 - in reply to #565943)
Subject: Re: 318 Poly to 413.... torsion bar question.....



Expert 5K+

Posts: 5585
5000500252525
Location: northern germany
pistolgrip - 2018-07-03 10:50 AM

Thanks for the info! Yeah, it looks like the 413 is about 70lbs heavier than the poly 318...... according to the internet!


Do you have a link? Actually a B is lighter than a 318 and a B is only 10-15 pounds heavier than a RB. Also the Polys used more cooling water and aluminum parts for BB's are readily available.
I'd be surprised if a RB is much heavier than a Poly. Of course a BB is making more power and if you want to use it, heavier T-bars and sway bars are required.
Top of the page Bottom of the page
60 dart
Posted 2018-07-03 3:01 PM (#565961 - in reply to #565892)
Subject: Re: 318 Poly to 413.... torsion bar question.....



Expert 5K+

Posts: 8463
5000200010001001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
poly 318 bare block with bearings and caps = 192 lbs

413 @ with same added = 220

but thats just part of it . all the ancillary parts gotta be added in but i'd run the same t bars with out a second thought as long as they aint ate up or damaged ---------------------------------------------------------later
Top of the page Bottom of the page
pistolgrip
Posted 2018-07-03 3:21 PM (#565962 - in reply to #565957)
Subject: Re: 318 Poly to 413.... torsion bar question.....


Veteran

Posts: 112
100
Location: Maryland
1960fury - 2018-07-03 2:40 PM

pistolgrip - 2018-07-03 10:50 AM

Thanks for the info! Yeah, it looks like the 413 is about 70lbs heavier than the poly 318...... according to the internet!


Do you have a link? Actually a B is lighter than a 318 and a B is only 10-15 pounds heavier than a RB. Also the Polys used more cooling water and aluminum parts for BB's are readily available.
I'd be surprised if a RB is much heavier than a Poly. Of course a BB is making more power and if you want to use it, heavier T-bars and sway bars are required.



http://www.hughesengines.com/TechArticles/5engineweights.php







Edited by pistolgrip 2018-07-03 3:22 PM
Top of the page Bottom of the page
1960fury
Posted 2018-07-03 6:26 PM (#565996 - in reply to #565962)
Subject: Re: 318 Poly to 413.... torsion bar question.....



Expert 5K+

Posts: 5585
5000500252525
Location: northern germany
pistolgrip - 2018-07-03 3:21 PM

1960fury - 2018-07-03 2:40 PM

pistolgrip - 2018-07-03 10:50 AM

Thanks for the info! Yeah, it looks like the 413 is about 70lbs heavier than the poly 318...... according to the internet!


Do you have a link? Actually a B is lighter than a 318 and a B is only 10-15 pounds heavier than a RB. Also the Polys used more cooling water and aluminum parts for BB's are readily available.
I'd be surprised if a RB is much heavier than a Poly. Of course a BB is making more power and if you want to use it, heavier T-bars and sway bars are required.



http://www.hughesengines.com/TechArticles/5engineweights.php





It says "Estimate" 600 PLUS for the Poly. According to a Magazin article from 57 or 58, quoting Mopar engineers, the Poly is heavier than a low deck big block. A couple of years ago a Mopar magazine bought various B/RB engines and weighed and measured them. There wasn't much difference between a B and RB angine and if I remember correctly some B/RB even weighed about the same. Also keep in mind that the Poly uses a lot more cooling water.

Edited by 1960fury 2018-07-03 6:27 PM
Top of the page Bottom of the page
1960fury
Posted 2018-07-03 6:51 PM (#566000 - in reply to #565961)
Subject: Re: 318 Poly to 413.... torsion bar question.....



Expert 5K+

Posts: 5585
5000500252525
Location: northern germany
60 dart - 2018-07-03 3:01 PM

poly 318 bare block with bearings and caps = 192 lbs

413 @ with same added = 220

but thats just part of it . all the ancillary parts gotta be added in but i'd run the same t bars with out a second thought as long as they aint ate up or damaged ---------------------------------------------------------later


weigh the assembled heads of a poly and the 413. I wouldn't be surpises if the Poly heads would weight twice that of the 413's.
Top of the page Bottom of the page
Jump to page : 1
Now viewing page 1 [50 messages per page]
Jump to forum :
Search this forum
Printer friendly version
E-mail a link to this thread



(Delete all cookies set by this site)