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Identifying BB 727 #1215802 04/14/12 09:45 PM 04/14/12 09:45 PM
Joined: Mar 2008 Posts: 293 salem, oregon. usa E elmor OP enthusiast
elmor OP enthusiast E Joined: Mar 2008 Posts: 293 salem, oregon. usa	A friend of mine has several 727's laying around and not sure what they were behind. How can I tell a BB trans from a SB or /6 trans?

Re: Identifying BB 727 [Re: elmor] #1215803 04/14/12 10:22 PM 04/14/12 10:22 PM
Joined: Aug 2010 Posts: 146 33950 6 67Monaco member
67Monaco member 6 Joined: Aug 2010 Posts: 146 33950	The bell housing and where the starter mounts will be the most superficial way to tell.

Re: Identifying BB 727 [Re: 67Monaco] #1215804 04/14/12 11:09 PM 04/14/12 11:09 PM
Joined: Jan 2003 Posts: 11,912 APACHE JUNCTION AZ J Joesixpack I Live Here
Joesixpack I Live Here J Joined: Jan 2003 Posts: 11,912 APACHE JUNCTION AZ	also look on the drivers side,above the trans pan rail,there is a PK# stamped there....will id the year and engine the trans came from,also look for the 68 only VIN stamped on the top of the bellhousing, and the 69 andup VIN stamped on the pass side ID boss....I went to a guys house and he said take your pick of 727B trans for 100.00,grabbed 1,turned out it was a 71 440+6 trans...

Re: Identifying BB 727 [Re: Joesixpack] #1215805 04/15/12 08:33 AM 04/15/12 08:33 AM
Joined: Aug 2003 Posts: 12,291 Kent, Wa 340SHORTY Truck Nut
340SHORTY Truck Nut Joined: Aug 2003 Posts: 12,291 Kent, Wa	look at the top 2 bolt holes. The BB trans holes are 6 1/2" apart.. The SB holes are 7 1/2" apart.. I am truckless..

Re: Identifying BB 727 [Re: 340SHORTY] #1215806 04/15/12 09:09 AM 04/15/12 09:09 AM
Joined: Sep 2003 Posts: 19,449 north of coder moparx "Butt Crack Bob"
moparx "Butt Crack Bob" Joined: Sep 2003 Posts: 19,449 north of coder	Quote: look at the top 2 bolt holes. The BB trans holes are 6 1/2" apart.. The SB holes are 7 1/2" apart.. you don't even need a tape measure. look at the starter nose boss....... the big block is in line with the input shaft. the small block nose boss is at about the 4 o'clock position.[ i can't tell time very good ! ] Last edited by moparx; 04/15/12 09:11 AM.

Re: Identifying BB 727 [Re: moparx] #1215807 04/15/12 04:28 PM 04/15/12 04:28 PM
Joined: Jan 2003 Posts: 2,111 Bowie, MD R Reggie top fuel
Reggie top fuel R Joined: Jan 2003 Posts: 2,111 Bowie, MD	Quote: Quote: look at the top 2 bolt holes. The BB trans holes are 6 1/2" apart.. The SB holes are 7 1/2" apart.. you don't even need a tape measure. look at the starter nose boss....... the big block is in line with the input shaft. the small block nose boss is at about the 4 o'clock position.[ i can't tell time very good ! ] Yep, quick and dirty BB 3:00 SB 4:00

Re: Identifying BB 727 [Re: elmor] #1215808 04/16/12 05:21 PM 04/16/12 05:21 PM
Joined: Jan 2003 Posts: 25,842 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,842 Rio Linda, CA	The bottom four bolt holes are the easiest way to tell, the BB has four equal size small holes and the SB has two small holes near the center with two larger outboard of them. The INTERNET, the MISinformation superhighway

Re: Identifying BB 727 [Re: John_Kunkel] #1215809 04/16/12 07:59 PM 04/16/12 07:59 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Thanks, JK! That's so easy I'll probably remember it. R.

Re: Identifying BB 727 [Re: dogdays] #1215810 04/17/12 04:26 AM 04/17/12 04:26 AM
Joined: Mar 2008 Posts: 293 salem, oregon. usa E elmor OP enthusiast
elmor OP enthusiast E Joined: Mar 2008 Posts: 293 salem, oregon. usa	Thanks guys. My buddy has 6 or 7 trans laying around. Now I can figure out which one I need to grab. He's got one that all the forward gears worked perfect, but reverse is gone. I know that one's a big block. It came out of a pickup with a 400. Guess I'd better get me a service manual.

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