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8 inch Ford JFI
https://mail.slantsix.org/forum/viewtopic.php?t=65685		 Page 1 of 2
Author:  Charrlie_S [ Mon Jan 04, 2021 7:36 am ]
Post subject:  8 inch Ford JFI
I got me a 8 inch Ford rear awhile back. Just starting to work on it. Found some basic info, while doing research.
Mine still had the tag, and decoded to 1975-1977 Comet/Maverick (also 64-65 Falcon). Build date 8-4-75, 2.73 open. That has a width of 56.375 inches, spring perch width of 43 inch, 28 spline axles, brakes are 10x1 3/4 with a 5 on 4 1/2 bolt pattern.
Will be getting a 4.30 mini spool, for my 65 Valiant. Only $300 in it plus the brake parts. A lot cheaper the a 8 3/4.
There are quite a few 8 inch Ford rears that would work in a "A" body. Take your tape measure to the yard. Make sure you get the 5 lug rear from a V-8 car.
Author:  Rob Simmons [ Mon Jan 04, 2021 8:36 am ]
Post subject:  Re: 8 inch Ford JFI
That’s what I have in the Duster with a 4.56 mini spool. Works great.

The first Duster we used a first gen Dakota rear. It was almost a bolt in as well.
Author:  Old6rodder [ Mon Jan 04, 2021 11:58 am ]
Post subject:  Re: 8 inch Ford JFI
Ditto, 4.56 & mini spool, in the 'Brick. Thinking about eventually going 8" for El Toad, but with the four spider version.
Author:  Charrlie_S [ Mon Jan 04, 2021 1:48 pm ]
Post subject:  Re: 8 inch Ford JFI
I was supprised at how many different vehicles had 8 inch rears that would work. Several models with only about 1 inch difference in total width (don't know about spring perchs). 56 3/8, 56 7/8, and 57 3/8 are some I found.
Just ordered brake parts, axle bearings, and seals from Rockauto. I am on hold with Summit for long wheel studs, as I'm typing this.
Author:  Joshie225 [ Mon Jan 04, 2021 1:52 pm ]
Post subject:  Re: 8 inch Ford JFI
I put an 8" in my '72 Dart. Didn't even have to shorten the driveshaft, but that may have been because the oval track leaf springs I used pushed the axle back 1/2". The 28 spline axles are my only concern.
Author:  Dart270 [ Mon Jan 04, 2021 2:00 pm ]
Post subject:  Re: 8 inch Ford JFI
Yep. Maverick 8" in my Project V since 2003. Perfect width and no driveshaft cutting with stock 904 and rear springs.

Lou
Author:  Greg Ondayko [ Mon Jan 04, 2021 2:28 pm ]
Post subject:  Re: 8 inch Ford JFI
Seems like a skookum affordable package for our cars.

What does the JFI refer to?


Greg
Author:  Rick Covalt [ Mon Jan 04, 2021 3:29 pm ]
Post subject:  Re: 8 inch Ford JFI
Just for information???
Author:  Charrlie_S [ Mon Jan 04, 2021 7:24 pm ]
Post subject:  Re: 8 inch Ford JFI
Quote:
Just for information???
Yep
Author:  drgonzo [ Tue Jan 05, 2021 6:12 pm ]
Post subject:  Re: 8 inch Ford JFI
It's the Florida version of FYI. :mrgreen:
Author:  Greg Ondayko [ Wed Jan 06, 2021 3:53 am ]
Post subject:  Re: 8 inch Ford JFI
Thanks Guys.

I have heard of FYI - I thought maybe JFI was some sort of Option or Ford Production code Like 2JZ, LS3, A833, RG, AHB or something like that.

Still learning new stuff every day.

Greg
Author:  Charrlie_S [ Wed Jan 06, 2021 4:44 am ]
Post subject:  Re: 8 inch Ford JFI
Hey, at my age, when you can't remember shortcuts, you make up your own. :?
Author:  Charrlie_S [ Wed Jan 06, 2021 4:47 am ]
Post subject:  Re: 8 inch Ford JFI
You people running 8 inch Fords, what did you use for wheel studs? I can't seem to find long studs with the correct size knurl (.545). I would rather not drill the holes oversize, for a larger knurl, if I don't have to.
Author:  Rob Simmons [ Wed Jan 06, 2021 5:55 am ]
Post subject:  Re: 8 inch Ford JFI
Mine had the longer studs when I bought the Duster from Norm ages ago. Sorry.
Author:  drgonzo [ Wed Jan 06, 2021 9:40 am ]
Post subject:  Re: 8 inch Ford JFI
Quote:
Hey, at my age, when you can't remember shortcuts, you make up your own. :?
You seem pretty sharp to me Charlie.
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