Strange 12 bolt 9"
 

Has anyone had experience with an aluminum Strange 12 bolt drop out center section? Are there any durability issues? What kind of E.T. reduction could I expect over a standard 9"?

Re: Strange 12 bolt 9"
 

hi Mark we have used one on and off in my SS 65 Mustang for over 12 years. Maybe1000 p-asses I LOVE IT. The only durability issue is with the junk chebbie ring and pinions that have such a awful tooth count I can only get about 45 passes out of a cryo'd PRO gear set before the pinion begins to self destruct consequently we alternate beteen third members to save on wear and tear Ring and pinion replacement gets expensive It is definately faster. Feel free to call us at the shop days any time to discuss further details we are on CST

Re: Strange 12 bolt 9"
 

Alex you have a pm
Ralph

Re: Strange 12 bolt 9"
 

Thanks Alex, any problems with ratio selection? I know the "chebbie" stuff doesn't always allow for a particular in between number.Really glad to see you posting.hope you're getting better every day,Mark

Re: Strange 12 bolt 9"
 

Going on 19 years now with my Strange unit. No hint of wear with only one gear change. Always used synthetic gear lube.

As for ET reduction, can't really say because the 12 bolt drop out unit is the only unit I have used.

Has been in 2 cars with total weight of 2,625 in SST Chevy II with a 14 x 32 Hoosier tire and 2,125 in SG '34 Chevy with a 16 x 33 Hoosier tire.

I would say it has been an excellent unit. It was $2,200 complete with spool purchased in '93.

Mike

Re: Strange 12 bolt 9"
 

6.14 like i use has terrible 43-7 tooth count

Re: Strange 12 bolt 9"
 

Yeah, Alex we went from a 4.88 GM gear set to a 4.56. These gear sets are pretty popular combos unlike your tall 6.14 set.

Come to think of it, I have never heard of the 6.14 combo but it must be a FORD and what the hell do I know about FORD. Squat...

Mike

Re: Strange 12 bolt 9"
 

4.88 wouldn't get me out of low gear.

Re: Strange 12 bolt 9"
 

Alex -

Have you tried Tom's Differentials for heat treating?

Re: Strange 12 bolt 9"
 

does the 12 blt. case fit into the 9'' housing or do you need the 12 blt. housing ?