727 converter questions - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer 727 converter questions

Print Thread

727 converter questions #498299 10/15/09 10:24 PM 10/15/09 10:24 PM
Joined: Oct 2003 Posts: 1,371 Costa Mesa, CA C chache876 OP pro stock
chache876 OP pro stock C Joined: Oct 2003 Posts: 1,371 Costa Mesa, CA	What size converter is considered a 'stock' converter? I have three converters. The first of which I believe to be stock. It is 11," which from reading the posts on this board can range from 800-2000 depending on who you talk to. The second of which that came with a transmission I bought that is supposed to be a higher stall converter, somewhere in the 2500 range. It is 11" It does look pretty identical to the first one. I ordered an aftermarket converter which has a stall of 2200-2800 and its 12" I thought that the smaller the diameter converter, the higher stall speed and vice versa? Also, this new converter that I bought does not fit my flexplate (360 magnum). Its too big. Did they make a big block and small block converter or whats the deal? Can I get an aftermarket flexplate with the larger pattern?

Re: 727 converter questions [Re: chache876] #498300 10/16/09 09:14 AM 10/16/09 09:14 AM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	what is inside makes the stall to a certain point! But you are right they generally get smaller as TQ goes up. don't often see those 12" in any kind of stall they are what is on motor homes and trucks! LOL! The flex plate you will need is a stock 440/400/413/383/361 one it is quite a bit larger. Back in the day I had to buy 318 ones for my 440 with higher stall speeds.

Re: 727 converter questions [Re: Dodgem] #498301 10/16/09 10:17 AM 10/16/09 10:17 AM
Joined: Aug 2007 Posts: 6,095 Valencia, España NachoRT74 master
NachoRT74 master Joined: Aug 2007 Posts: 6,095 Valencia, España	There are around 3 or 4 flexplates setup. Not only the size is the difference like also one of the crank bolts is on a diff position ( offset ) than the other ones Dunno if the offset bolt at crank is for 6 cilinders, SB or BB but is afact it does exist. Diameter for stock converters I think is 11 3/4" and 10 3/4". Some Hemis got the larger ones in fact With a Charger born in Chrysler assembly plant in Valencia, Venezuela

Re: 727 converter questions [Re: NachoRT74] #498302 10/16/09 11:43 AM 10/16/09 11:43 AM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	OEM flex plates are of 2 sizes depending on the application.. They will only go on 1 way at boththe converter and at the crank shaft. (Later Magnum plates not offset) 5548901-Flexplate.jpg (68 downloads)

Re: 727 converter questions [Re: MoparforLife] #498303 10/16/09 12:09 PM 10/16/09 12:09 PM
Joined: Jan 2007 Posts: 1,163 NORTHERN VA T THESHAKERPROJECT super stock
THESHAKERPROJECT super stock T Joined: Jan 2007 Posts: 1,163 NORTHERN VA	OEM size was 11.75 (usually 440s )or 10.75 (318-383 ) and the Hemi was a high stall (10.75? ) The smaller flex plat is for the 10.75 and the big is for the 11.75. The 10.75 converter had many different stall speeds depending on the application and year. A nice cheap combo for a 440 car back in the day was to swap to a small block (10.75) converter for more stall.

Re: 727 converter questions [Re: MoparforLife] #498304 10/16/09 12:22 PM 10/16/09 12:22 PM
Joined: Jan 2007 Posts: 352 Arizona 6 69rrgrabber enthusiast
69rrgrabber enthusiast 6 Joined: Jan 2007 Posts: 352 Arizona	Not to hijack the thread, but what how much duration can you go with a stock 11 inch converter in say a 440 or 383?? The stock cam was 268 duration but if I go to buy a new duration cam at 268 degrees the manufactuer recommends a bigger stall. CAC "It takes a Mopar to catch a Mopar!" 1969 Charger R/T 440 1969 Road Runner 383 1970 Cuda 440

Re: 727 converter questions [Re: THESHAKERPROJECT] #498305 10/16/09 12:22 PM 10/16/09 12:22 PM
Joined: May 2003 Posts: 15,487 Florida S scratchnfotraction I Live Here
scratchnfotraction I Live Here S Joined: May 2003 Posts: 15,487 Florida	a cheap combo,I run a stock high stall /6 verter on my 318 engine my 440 truck will get the stock high stall for a 318 also

Re: 727 converter questions [Re: NachoRT74] #498306 10/16/09 03:12 PM 10/16/09 03:12 PM
Joined: Jan 2003 Posts: 25,729 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,729 Rio Linda, CA	Quote: Diameter for stock converters I think is 11 3/4" and 10 3/4". Some Hemis got the larger ones in fact Nope, no Hemi ever came from the factory with the large converter. It's worth repeating that there is no set stall speed for any converter, the stall speed of any given converter depends on the power input and the resistance to movement. The INTERNET, the MISinformation superhighway

Re: 727 converter questions [Re: John_Kunkel] #498307 10/16/09 03:22 PM 10/16/09 03:22 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: Quote: Diameter for stock converters I think is 11 3/4" and 10 3/4". Some Hemis got the larger ones in fact Nope, no Hemi ever came from the factory with the large converter. It's worth repeating that there is no set stall speed for any converter, the stall speed of any given converter depends on the power input and the resistance to movement. Thank you; Maybe tehy will believe you. Clean it, if it's Dirty. Oil it, if it Squeaks. But: Don't fix it, if it Works!

Re: 727 converter questions [Re: John_Kunkel] #498308 10/16/09 04:55 PM 10/16/09 04:55 PM
Joined: Aug 2007 Posts: 6,095 Valencia, España NachoRT74 master
NachoRT74 master Joined: Aug 2007 Posts: 6,095 Valencia, España	Quote: Quote: Diameter for stock converters I think is 11 3/4" and 10 3/4". Some Hemis got the larger ones in fact Nope, no Hemi ever came from the factory with the large converter. mmm maybe was on some 440 HP where I saw ? With a Charger born in Chrysler assembly plant in Valencia, Venezuela

Re: 727 converter questions [Re: John_Kunkel] #498309 10/16/09 05:03 PM 10/16/09 05:03 PM
Joined: Oct 2003 Posts: 1,371 Costa Mesa, CA C chache876 OP pro stock
chache876 OP pro stock C Joined: Oct 2003 Posts: 1,371 Costa Mesa, CA	Quote: It's worth repeating that there is no set stall speed for any converter, the stall speed of any given converter depends on the power input and the resistance to movement. I understand it depends on the torque output of the engine, but there is general range of a converter stall speed right?

Re: 727 converter questions [Re: chache876] #498310 10/16/09 07:11 PM 10/16/09 07:11 PM
Joined: Jan 2003 Posts: 25,729 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,729 Rio Linda, CA	I'll take it to an extreme to illustrate the point, take a common converter like the popular factory "764", behind a /6 it might stall at 1400, behind a built 440 it might stall at 2800, behind a blown fuel Hemi it will never stall. The INTERNET, the MISinformation superhighway

Re: 727 converter questions [Re: John_Kunkel] #498311 10/16/09 08:13 PM 10/16/09 08:13 PM
Joined: Oct 2003 Posts: 1,371 Costa Mesa, CA C chache876 OP pro stock
chache876 OP pro stock C Joined: Oct 2003 Posts: 1,371 Costa Mesa, CA	Quote: I'll take it to an extreme to illustrate the point, take a common converter like the popular factory "764", behind a /6 it might stall at 1400, behind a built 440 it might stall at 2800, behind a blown fuel Hemi it will never stall. Ok so lets say I have a bone stock 360 with a stock converter. If I go out and buy a converter with an advertised 3000 stall, it wont stall any higher than what my stock converter does?

Re: 727 converter questions [Re: chache876] #498312 10/17/09 10:07 AM 10/17/09 10:07 AM
Joined: Apr 2008 Posts: 203 florida 7 74fldart enthusiast
74fldart enthusiast 7 Joined: Apr 2008 Posts: 203 florida	no hes not saying that . it should stall around the advertised speed . hes saying stall speed depends upon engine power output when your talking bone stock torque converters. thats why most good converter companies will custom make a converter for you after you give them your engine size, power out put, cam, car wt., etc.

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1