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Technical 1954 chevy belair rearend swap

Discussion in 'Traditional Customs' started by Robert Braun, Feb 22, 2021.

  1. Robert Braun
    Joined: Apr 7, 2018
    Posts: 23

    Robert Braun

    I'm currently attempting a 350 swap for my 54 belair and have been having trouble finding a donor rearend to swap out the closed driveline. I have been told many different rears that will work and almost too many to keep track of. I found a rear out of a 64 F100. 9 inch with 3:55 gears open diff. Will this rear work in my 54??

    Sent from my SM-G988U using The H.A.M.B. mobile app
     
  2. Budget36
    Joined: Nov 29, 2014
    Posts: 13,257

    Budget36
    Member

    You need to check your WMS to WMS distance and compare.
     
  3. typo41
    Joined: Jul 8, 2011
    Posts: 2,571

    typo41
    Member Emeritus

    I think the F1200 rear will be WAY too wide,
    10 bolt out of a Nova is what I used,,, yea stop laughing they might exist./
    I would go with a 8.8 yea its a ford but you were already to use one anyway,, Mustang, Explorer they are all over the junk yards,,, or order a new 9 inch from Currie $$
     
    JeffB2 likes this.
  4. 55-57 Chevy is the most common swap that I know of for those cars. Guessing anything out an an F100 is way too wide. Needs to be about 60” outside wheel mounting surface to surface if my memory is correct.
     
    Chavezk21, HotRodWorks and rockable like this.

  5. stylelinesteve
    Joined: Nov 25, 2019
    Posts: 9

    stylelinesteve

    I used a rear out of a ‘57 Chevy and it was a very straight forward job to do[​IMG][​IMG]


    Sent from my iPad using The H.A.M.B. mobile app
     
  6. fastcar1953
    Joined: Oct 23, 2009
    Posts: 3,617

    fastcar1953
    Member

    4x4 s10 keeps chevy bolt pattern.
     
  7. 49ratfink
    Joined: Feb 8, 2004
    Posts: 18,849

    49ratfink
    Member
    from California

    here you go...

    s-l500.jpg
     
    nosford, MO54Frank, Budget36 and 2 others like this.
  8. lowrd
    Joined: Oct 9, 2007
    Posts: 405

    lowrd
    Member

    I used a 77 Camaro diff using lowering blocks drilled to center the rear axle. Plenty of clearance. I also have a 4x4 S-10 diff available but have yet to measure the width of the rotors to the frame clearance, looks close. Also, S10’s use metric studs, so either two sets of lug nuts or change out the studs.
     
  9. Dyno Dave
    Joined: Feb 18, 2011
    Posts: 339

    Dyno Dave
    Member

    Online I got a rebuilt 2WD S-10 rear end, new bearings, 4.10 R&P & posi on my doorstep for $800. Correct width, had the perches welded on and fitted to original style springs. Using a Camaro V/8 5- speed/235 I6 it's Fun to Drive, very pleased with the result. Note; a S-10 4WD rear is 6" too wide. Dyno Dave
     
    loudbang and vtx1800 like this.
  10. My son, ( dual quad 55 ) here on The H.A.M.B. used a 1955-57 Chevrolet rear end in my daughter-in-laws 1954 Chevrolet two-door sedan. He used a Posie's spring kit to make life easier. This spring kit puts the rear end in the proper place, regarding front to rear placement.
     
    lothiandon1940 likes this.
  11. Tri 5 Chevy
    1st or 2nd gen camaro
    4x4 s10
    Nova
    Granada

    tri five and camaro bolt in
    S10 is the right length but perches need to be moved

    nova fits

    Grenada is correct length no clue on perches


    I’m sure there’s more, but this is what I know.


    If you use the stock springs the center pin locator bike needs to be drilled off set a bit to center the wheels in the wheel well
     
    70Mach351C and guthriesmith like this.
  12. hepme
    Joined: Feb 1, 2021
    Posts: 524

    hepme
    Member

    just my opinion but you have 2 choices that will do the trick, both mentioned. 55-64 is practically a bolt in, 61" flange to flange as i recall. If you go HP, then the Explorer 8.8 is the ticket at 60" flange to flange. Prob. here is the offset pinion, but most say its no big deal, just puts the ujoints at the max level.
    I did the 8.8 on a 40 chev. but did center the pinion by using the short axle off another rear end. Strong, cheap fix with a lot of gear selections.
     
  13. Bob Lowry
    Joined: Jan 19, 2020
    Posts: 1,510

    Bob Lowry


    Yep, did the same thing in my '37, '40 and '46 Chevys. Just drill another centering pin hole in the spring plate
    and you're ready to go. I have always used the stock springs, if in good condition, and never an issue, even
    with some HARD street racing.
     
  14. ol-nobull
    Joined: Oct 16, 2013
    Posts: 1,655

    ol-nobull
    Member

    Hi. Good luck with the T350. I purchased a recent rebuild locally and used a 57 Chevy pickup rear end and had to flip te spring hangers to fit my 45 Chevy coupe. Turned out the 350 had a leak down problem where the converter would begin a leak down if it sat for more than a day and this would cause an overfill in tranny and fluid would seep out the spedo housing fitting. Biggest mistake I ever made and nobody locally has a clue how to fix it. Biggest POS I ever had. Jimmie
     
  15. TCATTC
    Joined: Oct 12, 2019
    Posts: 283

    TCATTC
    Member

    1974 Nova rear, 15x7 wheels 12141005_106118546414625_5071690250041364589_o.jpg
     
    6inarow, Chavezk21, i.rant and 3 others like this.
  16. 56sedandelivery
    Joined: Nov 21, 2006
    Posts: 6,695

    56sedandelivery
    Member Emeritus

    Rear end needs to be roughly 60" wide, drum to drum/axle flange to axle flange. Personally, I'd stay away from the S10/Blazer 4 X 4 rears as they have a 7.5/7.5/8" ring gear, and if you get a little abusive with it.............Nova/Camaro or Tri-Five rear ends, unless you don't mind mismatched wheel bolt patterns or having them re-drilled to match. We used a 56 Chevrolet rear end in the 51 Business Coupe, and re-drilled the spring locator pin hole 1-1/2 inches forward, and 1/2 inch inward to re-center the pin so the wheels/tires fit the wheel well. What transmission do you plan on? With the "28" long" transmissions (Powerglide, TH350 w/6" tailhousing, 200-4R) a midsized, 70's, GM driveshaft will fit; with a 9" extension housing TH350, a Tri-Five shaft will work. I am Butch/56sedandelivery.
     
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  17. jimmy six
    Joined: Mar 21, 2006
    Posts: 14,915

    jimmy six
    ALLIANCE MEMBER

    I used a 56 Chevrolet when I did one in 65. Drilled pads to get the wheel centered better. Works great with stock wheel/tire combo..
     
    guthriesmith likes this.
  18. SoCal1904
    Joined: Jun 1, 2020
    Posts: 10

    SoCal1904

    I have one of a 63/64 Impala rear end waiting to go into my '52, correct length but need to add perches as well as remove all the stock brackets.
     
  19. 51pontiac
    Joined: Jun 12, 2009
    Posts: 394

    51pontiac
    Member
    from Alberta

    55-57 Chev fits great with a simple relocation of the centering pin hole. My 51 Canadian Pontiac (which is the same as a Chev underneath) has been running this setup since 1976. I did have custom ubolts made up.
     
  20. Mr48chev
    Joined: Dec 28, 2007
    Posts: 33,979

    Mr48chev
    ALLIANCE MEMBER

    60/64 F100 nine inch rear is 61-1/4 inches wms to wms. Perfect for my 48 3100 but probably a tad wide for a 54 car unless you plan to run some real ugly wheels that look more like front wheel drive wheels than hot rod wheels.

    Plus unless you spend a couple hundred bucks changing the bolt pattern you are going to end up running Ford truck 5 on 5-1/2 wheels.

    It can work but you are going to have to do some head scratching on the wheel and tire choice.

    One more thing to consider, Wider axle in a car with a very low wheel well opening means that you most likely will have a fight getting some wheels and tires on the rear end at all. Do it wrong and you will be the butt of that tire change on the back of a 54 Chevy story that gets told at a few hot rodders beer and burger sessions. It isn't unknown to have to take the shock loose and put a bottle jack between the frame and axle to get a tire off those with the wrong combo.

    55/64 Chevy car is 60 inches wms to wms. First generation Camaro is 60
     
  21. I used an '83 G-body [mine was a freebie cutlass 10 bolt] in my 50 delivery. It was too narrow for a common offset wheel so I used American torque thrust in 15"X8.5". They have a built in 1.25" positive offset. Even so, I had to "clearance" the inner wheel wells with a BFH in spots and roll the outer lips. Everybody told me the little 7.5" 10 bolt would explode behind my healthy 406 SBC with a 4 speed. The guy I sold the car to blew the transmission but the little 10 bolt survived. deliveryN48chev.jpg
     
  22. WZ JUNK
    Joined: Apr 20, 2001
    Posts: 1,850

    WZ JUNK
    Member
    from Neosho, MO

    I have a Lincoln Versailles rear end in my 54. This next month I am switching it to a Ford Ranger rear. They are nearly the same width with the 8.8 gears. After 3 years of trying to make brakes work on the Lincoln rear, I am giving up. The Lincoln rear was the hot set up when I started building this car, but it is not today. Trying to get the brakes to work correctly has been the worst mechanical experience I have had in my life time.
     
  23. Malibu406
    Joined: Nov 10, 2020
    Posts: 230

    Malibu406
    Member

    8.8 ford with 31 spline axles from an 01 explorer was, if I remember correctly, 1/2” wider than my 50 pontiac. Welded new perches worked perfect. But, not ols school if that is your desire.
     
  24. Budget36
    Joined: Nov 29, 2014
    Posts: 13,257

    Budget36
    Member

    The least expensive route would be an S10 rear of width is correct, if you think you might over power the rear, then use the Ranger rear or Explorer, whichever is the best fit width wise. The axles can be redrilled for your bolt pattern, that of course adds to the cost.
    So those who worry about the 7.5/7.65 rear of the S10, it’s basically the same one used on F-bodies with LT1 engines and maybe even later with the LS1 engines, making 290 HP and above.
    Yes, the 8.8 is stronger, but do you need it for the additional cost to do the axles?
     
  25. 54FISH
    Joined: Jan 10, 2011
    Posts: 356

    54FISH
    ALLIANCE MEMBER

    Wouldn't it depend on what your looking to put under the back , tire size ? I have a 2nd gen Camaro under mine but I have 205/75r15s on OEM steelies & I'm close to the fender , may have to watch if I go up the 215 or wider ( check offsets) . Measure stock rear from backing plate / backing plate , some look like they got 5" between wheel & fender , I'm got about 2"-3" space with Camaro rear . Good luck !
     
  26. 55 to57 Chevy rear end. Perfect fit.
     

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