Author Topic: Can you use a sb 727 with a new HEMI??  (Read 27149 times)

Offline torqueaddict

  • Jr. Member
  • **
  • Posts: 310
Can you use a sb 727 with a new HEMI??
« on: August 30, 2010 - 12:11:31 AM »
I know I am only most recent jackwagon to ask this but can you use a sb 727 in a hemi conversion and if so how do you do it, and what all is needed. Guys thanks for the help
1972 Challenger  (O O [======R/T=] O O) 1970 clone




Offline aris_unlimited

  • Project in full swing
  • Full Member
  • ***
  • Posts: 800
Re: Can you use a sb 727 with a new HEMI??
« Reply #1 on: August 30, 2010 - 03:46:38 AM »
I assume it would be possible, most things with cars are with enough money lol.

Someone out there probably makes bellhousing adapters that work for this. Although I think you would also have to do some changing to the stock ecu on the newer hemi motor, because it also controls the transmission.
Cuda is gone :(

74 satellite, daily driver/project now

Offline torqueaddict

  • Jr. Member
  • **
  • Posts: 310
Re: Can you use a sb 727 with a new HEMI??
« Reply #2 on: August 30, 2010 - 05:22:23 AM »
I assume it would be possible, most things with cars are with enough money lol.

Someone out there probably makes bellhousing adapters that work for this. Although I think you would also have to do some changing to the stock ecu on the newer hemi motor, because it also controls the transmission.



Yeah I was watching overhaulin' and they bolted a 727 to a 6.1 hemi so if possible why not hook up the best auto tranny in history on a new hemi!!! I just need some direction thanks guys if anyone has more info let me know
1972 Challenger  (O O [======R/T=] O O) 1970 clone

Offline heminut

  • Resident
  • *****
  • Posts: 2023
  • owner of the poor man's Hemi Cuda
Re: Can you use a sb 727 with a new HEMI??
« Reply #3 on: August 30, 2010 - 10:28:27 AM »
Yes a smallblock torqueflite will bolt right up to the 3rd gen. Hemis. Mopar Performance sells a flexplate for this application or if you already have a truck flexplate you can use it by removing the starter ring gear slightly modifying the torque converter bolt holes. Use a stock 5.2/5.9 Magnum mini starter and you're good to go. You DO NOT need the adapter that Bouchillon sells!
1970 5.7 Hemi Cuda

Offline torqueaddict

  • Jr. Member
  • **
  • Posts: 310
Re: Can you use a sb 727 with a new HEMI??
« Reply #4 on: August 30, 2010 - 11:05:05 AM »
Yes a smallblock torqueflite will bolt right up to the 3rd gen. Hemis. Mopar Performance sells a flexplate for this application or if you already have a truck flexplate you can use it by removing the starter ring gear slightly modifying the torque converter bolt holes. Use a stock 5.2/5.9 Magnum mini starter and you're good to go. You DO NOT need the adapter that Bouchillon sells!


Whats a realistic estimate on the cost of droping in a new hemi and when you say gen 3 I dont know what motor that is can you be more specific on what motor that is.
1972 Challenger  (O O [======R/T=] O O) 1970 clone

Offline 73Chally

  • Resident
  • *****
  • Posts: 2381
Re: Can you use a sb 727 with a new HEMI??
« Reply #5 on: August 30, 2010 - 11:32:04 AM »
Gen 3 is the current generation (Gen 1 would be the 392, Gen 2 would be the 426, and now Gen 3).  Price wise can be anywhere from several thousand on up, depending on where you source your parts and how much you can do yourself.  Your best bet would probably to buy a complete drive line from a totaled car, take what you need and sell the rest.

Offline 72hemi

  • Resident
  • *****
  • Posts: 4812
  • MEMBER SINCE JANUARY 2006
Re: Can you use a sb 727 with a new HEMI??
« Reply #6 on: August 30, 2010 - 11:40:05 AM »
I went through and did a rough cost estimate for everything required for a 6.1 conversion and it came out to be around $10k including spending $3500 for a complete 6.1 hemi from LKQ wrecking yards. Don't buy a wrecked car because you will only use the complete engine that's it. Everything else will come from other sources like your transmission of choice (727, 833, Tremec 5 speed, 518, etc), custom or modified gas tank, fuel line, wiring harness, computer, engine mounts, headers, sensors, etc. There was a beautiful write up on Moparts that a covered the conversion on a white 71 340 cuda that went step by step and included all of the parts required, the part numbers, the sources and the prices.
1972 Dodge Challenger 340 6 Pack 4-speed
1996 Dodge Viper GTS Coupe

Offline torqueaddict

  • Jr. Member
  • **
  • Posts: 310
Re: Can you use a sb 727 with a new HEMI??
« Reply #7 on: August 30, 2010 - 11:45:29 AM »
Hey guys what LKQ I never heard of them before.
1972 Challenger  (O O [======R/T=] O O) 1970 clone

Offline Oldschool

  • Administrator
  • Permanent Resident
  • *****
  • Posts: 13195
  • Member Since 9-05-06
Re: Can you use a sb 727 with a new HEMI??
« Reply #8 on: August 30, 2010 - 12:06:09 PM »
Hey guys what LKQ I never heard of them before.


It means the parts are of "Like, Kind, and Quality" compared to the parts being replaced.    :2thumbs:   
Ken  --  In Georgia

MOPAR-------"Built To Run------Here To Stay"

Offline torqueaddict

  • Jr. Member
  • **
  • Posts: 310
Re: Can you use a sb 727 with a new HEMI??
« Reply #9 on: August 30, 2010 - 02:32:02 PM »
Does anyone know a place that sells used hemi's online for decent prices.
1972 Challenger  (O O [======R/T=] O O) 1970 clone

Offline 8657hemi

  • Jr. Member
  • **
  • Posts: 42
Re: Can you use a sb 727 with a new HEMI??
« Reply #10 on: August 30, 2010 - 04:29:28 PM »
LKQ Corp. is a parts salvage company. http://www.lkqcorp.com/home/home.asp
They did right by me.
'86 D150 - '03 5.7 Hemi, 545RFE
'72 Charger - '08 5.7 Hemi, 904
'73 Barracuda - '08 5.7 Hemi, 727
'73 Challenger - '08 5.7 Hemi, 727

Offline bigblue73

  • Full Member
  • ***
  • Posts: 504
Re: Can you use a sb 727 with a new HEMI??
« Reply #11 on: August 31, 2010 - 09:26:51 AM »
The only thing that I can think of that is our of the ordinary here is the flex plate.  The 3G HEMI uses an 8-bolt flywheel instead of the small blocks 6 bolt.  It does not match the 426 HEMI 8-bolt crank.

Tony
Hurst Driveline Conversions

Offline 72hemi

  • Resident
  • *****
  • Posts: 4812
  • MEMBER SINCE JANUARY 2006
Re: Can you use a sb 727 with a new HEMI??
« Reply #12 on: August 31, 2010 - 10:02:43 AM »
LKQ Corp. is a parts salvage company. http://www.lkqcorp.com/home/home.asp
They did right by me.


 :iagree: Yes they are a national salvage yard company and have very good prices from what I have seen.

Mancini Racing sells the engine mounts, headers, flex plate (for attaching Gen III hemi to a 727 torqueflite) and oil pan.

http://chucker54.stores.yahoo.net/modernmopar.html
1972 Dodge Challenger 340 6 Pack 4-speed
1996 Dodge Viper GTS Coupe

Offline 72hemi

  • Resident
  • *****
  • Posts: 4812
  • MEMBER SINCE JANUARY 2006
Re: Can you use a sb 727 with a new HEMI??
« Reply #13 on: August 31, 2010 - 10:10:40 AM »
I found the thread on Moparts that covers every detail of the install. In this case a 727 was used as well.

http://board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=3930520&page=1&fpart=all&vc=1
1972 Dodge Challenger 340 6 Pack 4-speed
1996 Dodge Viper GTS Coupe

Offline torqueaddict

  • Jr. Member
  • **
  • Posts: 310
Re: Can you use a sb 727 with a new HEMI??
« Reply #14 on: August 31, 2010 - 03:07:59 PM »
Hey guys Thanks!!! You are all very supportive!!! Some sites have people that seem miserable.
1972 Challenger  (O O [======R/T=] O O) 1970 clone