SAAC Forum

SAAC Forum => SAAC Forum Discussion Area => Topic started by: Bigfoot on October 04, 2018, 01:38:52 PM

Title: 1970 Mustang with 351-2v question
Post by: Bigfoot on October 04, 2018, 01:38:52 PM
Factory 4speed, 351-2v 1970 Mustang.
Fastback
Cleveland

What spline in rear?

Thank you
Title: Re: 1970 Mustang with 351-2v question
Post by: 427heaven on October 04, 2018, 01:45:41 PM
Biggie- Most were 28 spline,the big block and Bosses got the 31 spline.
Title: Re: 1970 Mustang with 351-2v question
Post by: Bill on October 04, 2018, 01:58:44 PM
Quote from: 427heaven on October 04, 2018, 01:45:41 PM
Biggie- Most were 28 spline,the big block and Bosses got the 31 spline.

X 2
Title: Re: 1970 Mustang with 351-2v question
Post by: Bigfoot on October 04, 2018, 02:42:38 PM
Thnx guys
Just double checking before I order "up" some gears.
I didn't want to "lead the witness" by offering my guess....
Title: Re: 1970 Mustang with 351-2v question
Post by: 427heaven on October 04, 2018, 02:58:47 PM
Biggie- To clarify a couple of things, before you order up some stuff you need to know what posi-locker unit etc is in there. All the 9 inch gears will fit but if you want to UPGRADE say from a peg leg open unit you need to know what else is in there. ;)
Title: Re: 1970 Mustang with 351-2v question
Post by: Special Ed on October 04, 2018, 05:20:06 PM
70 351c 4bbl  had rear sway bar & 2 hole 9'' housing part of the comp suspension  but 2bbl didnt so u need to check housing maybe 8''.
Title: Re: 1970 Mustang with 351-2v question
Post by: J_Speegle on October 04, 2018, 09:15:22 PM
Quote from: Special Ed on October 04, 2018, 05:20:06 PM
70 351c 4bbl  had rear sway bar & 2 hole 9'' housing part of the comp suspension  but 2bbl didnt so u need to check housing maybe 8''.

Just checked some pictures of a H code 3 speed. It had a 9" in it. But no pictures of the rearend tag so can't help with the spline count
Title: Re: 1970 Mustang with 351-2v question
Post by: Special Ed on October 04, 2018, 10:35:42 PM
28 spline for sure