Posi for Ford 9" - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71custominworks · 10-21-2003, 12:35 PM

I'm not a technical guy so here is my question. Why can I only find a posi for a 8.8 Ford rear end? Another question is does the length need to be really changed on the Ford 9 from a stock 71 Chevy rearend? To be clearer I'm going from stock Chevy to Ford 9" rear on my 71 SWB Fleetside. Thanks for input and if there are good prices out there for posi's let me know.

lost wages · 10-21-2003, 02:01 PM

the ford 9 inch came in a lot of different widths, i used one out of a 78 ford truck so i had to narrow mine a little, do a search and you will find some web site that have all the years and widths. Look at Eaton for a posi for the 9 inch.

**1970 CST Short Wide** · 10-21-2003, 02:18 PM

http://www.currieenterprises.com/htm...2boltchevy.htm

Currie enterprises is where I got mine. Drum to drum delievered
was ~$2400 Not cheap but VERY nice.

cdowns · 10-21-2003, 03:10 PM

there's always alot of 9"posis on ebay they go pretty cheap

knucklebuster · 10-21-2003, 08:14 PM

The old rears out of the lincolns are the right length to match these trucks i think.I don't know this for sure but it's what I been told.

RACING29 · 10-21-2003, 08:56 PM

67-70 model Ford truck rearend is what I'm using>56 1/4"

71custominworks · 10-22-2003, 12:45 PM

I already have the rear end and am not sure how to tell what it came out of. It had been sitting in a junk pile of someone I know and he gave it to me FREE! I could not find any way to identify the rear end. How can I find out and if I can't what do I do? I measured mine and it and it seemed there was only a 1/2" difference in length, but I may have measured wrong. How should I go about measuring?

**1970 CST Short Wide** · 10-22-2003, 02:30 PM

Go to the site I posted above and look around, They had a drawing on how and where to measure

cdowns · 10-22-2003, 07:39 PM

the way you measure is you take a tape measure streach it out go from the outside of the drum on one side to outside of the drum on the other side

nate68 · 10-23-2003, 01:05 AM

late 70's lincoln mark V. same width as 71/72

10-21-2003, 12:35 PM	#1
71custominworks Junior Member Join Date: Nov 2002 Location: Columbus, KS Posts: 83	Posi for Ford 9" I'm not a technical guy so here is my question. Why can I only find a posi for a 8.8 Ford rear end? Another question is does the length need to be really changed on the Ford 9 from a stock 71 Chevy rearend? To be clearer I'm going from stock Chevy to Ford 9" rear on my 71 SWB Fleetside. Thanks for input and if there are good prices out there for posi's let me know.

10-21-2003, 02:18 PM	#3
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,185	http://www.currieenterprises.com/htm...2boltchevy.htm Currie enterprises is where I got mine. Drum to drum delievered was ~$2400 Not cheap but VERY nice. __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

10-21-2003, 03:10 PM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	there's always alot of 9"posis on ebay they go pretty cheap __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

10-21-2003, 08:14 PM	#5
knucklebuster Failure is NOT an option! Join Date: Feb 2003 Location: greenwood s.c. Posts: 811	The old rears out of the lincolns are the right length to match these trucks i think.I don't know this for sure but it's what I been told. __________________ House payment or truck parts?????.........why does life have to be so complicated? 1969 Chevy Shortbed Fleetside 1969 Camaro ps pb a/c(drove in high school now it's just a yard ornament,but it's next on the list for resto) 1990 Ni$$an hardbody( daily beater that has been really beaten!) 1999 Grand Am GT(wifes ride...never buy a pontiac!!Trust Me)

10-21-2003, 08:56 PM	#6
RACING29 Registered User Join Date: Jul 2002 Location: Tennessee, Morristown Posts: 355	67-70 model Ford truck rearend is what I'm using>56 1/4" __________________ 1967 Chevy truck, R1 racing seats, 4 point racing harness, 4/6 drop, primered blue, soon to be shaved, 350- 060. over, flat top pistons, Eagle rods, Edelbrock Aluminum heads, 1.5 Scorpion roller rockers, Lunati 515" cam, mallory ignition, Holley 750 double pumper carb, Built 350 turbo trans, 2500-2800 boss hog stall, 20 gallon aluminum fuel cell!!!

10-21-2003, 02:01 PM	#2
lost wages Registered User Join Date: Apr 2001 Location: jefferson city, mo Posts: 1,364	the ford 9 inch came in a lot of different widths, i used one out of a 78 ford truck so i had to narrow mine a little, do a search and you will find some web site that have all the years and widths. Look at Eaton for a posi for the 9 inch.

10-22-2003, 12:45 PM	#7
71custominworks Junior Member Join Date: Nov 2002 Location: Columbus, KS Posts: 83	I already have the rear end and am not sure how to tell what it came out of. It had been sitting in a junk pile of someone I know and he gave it to me FREE! I could not find any way to identify the rear end. How can I find out and if I can't what do I do? I measured mine and it and it seemed there was only a 1/2" difference in length, but I may have measured wrong. How should I go about measuring?

10-22-2003, 02:30 PM	#8
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,185	Go to the site I posted above and look around, They had a drawing on how and where to measure __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

10-22-2003, 07:39 PM	#9
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	the way you measure is you take a tape measure streach it out go from the outside of the drum on one side to outside of the drum on the other side __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

10-23-2003, 01:05 AM	#10
nate68 Registered User Join Date: Jan 2000 Location: ca Posts: 1,110	late 70's lincoln mark V. same width as 71/72 __________________ 68 short step, 406/700r4, 9" w/discs.



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