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Username Post: what Chevy rear-end would fit my 1952 3100? truck        (Topic#365786)
1970hawkeye 
Newbie
Posts: 2

Reg: 07-11-21
07-11-21 07:43 AM - Post#2823044    

HI folks
I have a stock 1952 Chevy 3100 1/2 ton and I'd like to put in a stock V8 and automatic transmission.
Any ideas what Chevy rear-end might work?

Thanks
Hawkeye



 


Keroppi 
Poster
Posts: 75

Loc: NorCal
Reg: 10-24-18
07-11-21 02:03 PM - Post#2823069    
    In response to 1970hawkeye

You will most likely need to replace your torque tube driveshaft with an open driveshaft. One dilemma is what wheels you will use.

If you use a 1955-1957 rear axle, you can use the stock 6 bolt x 5.5" diameter pattern wheels you probably have on your '52, if your truck is stock it will have a closed torque tube driveshaft and 6 lug 5.5" diameter hubs.

Most guys replace the front clip on the type of conversion you're doing, and I'll leave that for you to research. To replace the engine and transmission you won't need to do that, just that it would be very nice to have better suspension on the front, IMO.

If you do use a '55-'57 2nd Series (changed somewhere mid-'55) you will probably need to replace the ring/pinion also. You can get those on Ebay, or from Mother Trucker Trucks directly (my advice, don't go through Ebay unless you have to). His ring/pinion sets for the 2nd series are 3.38:1., most all of the stock '55-'57 diffs have a 3.90:1 in them.

All that said, the majority of people find other newer rear ends, many with 5 bolt 4.75" diameter pattern wheels and replace their wheels. 3.73:1 or 3.55:1 are typically good for the application you're doing. You can get an S10 rear axle that has 5 lug 4.75" diameter hubs and 3.48:1 (I believe, off the top of my head). So if you plan to replace your wheels there are a lot more options.

Also, consider this. I know someone that bought a '55 Series 2 truck and is putting an LS, Mustang style front clip and not sure what type of rear end he'll use, but I bought his rear axle, driveshaft, trans, bell housing, clutch and flywheel from his truck. He figures he'll be spending in the $25k range on his project and bought the truck for $5500. So, IMO, the '55 parts are less desirable for V8 conversions. The reason I wanted the open driveshaft was so I could use a T5 in my '46, that's the best way to bring the RPMs down at highway speeds, IMO, and get a much better Transmission...oh, and keep my existing wheels and tires. Good luck with your project, it's pricey to do a conversion to V8, when done right. If you take your time and buy used parts, you can contain that some.

Look for a Camero or Nova rear axle, many people use those. I believe they have 5 lug 4.75" diameter pattern hubs.

Alan
"Keroppi" - 1946 Chevy 1/2 Ton Pickup


 
1970hawkeye 
Newbie
Posts: 2

Reg: 07-11-21
07-18-21 01:02 PM - Post#2823437    
    In response to Keroppi

Thank you for the information.
I was given a rear-end out of a 1956 truck and I have a few S-10 rear-ends and one Nova rear-end that needs to be rebuilt.
I'm trying to decide which one would be the best fit and handle the power of a 350 engine.
Hawkeye





 
Keroppi 
Poster
Posts: 75

Loc: NorCal
Reg: 10-24-18
07-18-21 03:33 PM - Post#2823451    
    In response to 1970hawkeye

  • 1970hawkeye Said:
Thank you for the information.
I was given a rear-end out of a 1956 truck and I have a few S-10 rear-ends and one Nova rear-end that needs to be rebuilt.


I think both your S10 and Nova rear-ends will have 5 lug x 4.75" diameter, so it might matter what wheels you want to use and/or if the '56 rear end uses the same bolt pattern as you have. If it was from a truck they should be 6 lug, otherwise 5 lug. Either way they should be 5.5" diameter. The advantage of the '56 is might be able to use your same wheels that are on your '52 if they are all 6-bolt.

  • 1970hawkeye Said:
I'm trying to decide which one would be the best fit and handle the power of a 350 engine.
Hawkeye


Any of them will handle the power, AFAICT, but the gearing will be better in the S10 or Nova rear-end most likely. Chances are you're '56 has a 3.90 ring/pinion, you would need to check that. Your S10 will be geared better, possibly 3.48:1 which is pretty common on the S10 when I was looking.

What it gets down to is that you need more like 3.73:1 at minimum, and 3.55:1 would be even better. You'll have plenty of power with the 350. I've got a 235 inline 6.

I just picked up a '93 S10 T5 which has electronic speedometer on it. I'm going to send my tailshaft off to Washington, there's a guy on Ebay that will convert the tailshaft into a mechanical speedo for $200, so that's what I'm gonna do. I picked up the T5 locally, so no shipping, and got it for $350. Not a bad price considering the S10 T5s tend to go for around $500-$800 for just any beater...in this case the T5 is a WC, so it has the extra bearings and will shift smoother.

The trans you use could have an effect on the ratio of your rear diff ring/pinion. You can get a 3.38:1 ring/pinion for your '56, but they cost about $300. The S10 or Nova could be 3.73:1 or 355:1, AFAIK. If you use the '56 you most likely need the Series 2 3.38:1 ring/pinion.

Gonna pull my tailshaft today so I can ship it off to Washington.

Alan
"Keroppi" - 1946 Chevy 1/2 Ton Pickup


 
51 AD 3100 
Contributor
Posts: 213

Age: 55
Loc: Grant, AL
Reg: 08-30-20
08-16-21 05:17 AM - Post#2825268    
    In response to 1970hawkeye

Before i respond to how i'm dealing with this for my own 51 chevy . yes, i realize this is a Chevy forum...what rear end you end up with will be determined by the availability and other factors such as you transmission, how much torque and horsepower your 350 will have. the width of your rear end will be determined by the rims you choose to use. so , dont hate when i say ... im building a Ford 9 inch rear end for mine, 3.25 gears ,behind a 1965 283 4 bbl (looking at a possible 320 hp, and a th350 with a shift kit). I have gone through 3 different gm rear ends and for one reason or another nothing really works without spending time and money to chase and change something that can be done easily with the 9 inch. The 9 inch is a commonly long used hot rodders rear end , its strong and can be built to whatever you need and will handle just about anything you can put in front of it and abuse you can throw at it. There, i said it.

Life's more fun, in a '51


 
wagonman100 
Site Ambassador
Posts: 15690

Loc: Baltimore, MD
Reg: 11-27-04
08-17-21 09:53 AM - Post#2825378    
    In response to 51 AD 3100

I don’t think there is any judgement in using the 9”. I have one in my El Camino and will likely have a version of it in every car when they are done. That is what hot rodding is all about, using the best parts you can get for better performance. Ford happened to make one heck of a rear end and a lot of people use it. I like the Dana 60 too but they are far more scarce.

Jay
Friends don’t let friends drive Fords.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon
1957 Cameo Carrier


 
51 AD 3100 
Contributor
Posts: 213

Age: 55
Loc: Grant, AL
Reg: 08-30-20
08-21-21 05:36 AM - Post#2825636    
    In response to wagonman100

i had to say it that way just because of the purists ( a former version of myself) who would never put any Ford part on or under their chevy. id be accused of sacrilege . i get enough crap for putting an s10 chassis under a 51 truck body .


Life's more fun, in a '51


 
Keroppi 
Poster
Posts: 75

Loc: NorCal
Reg: 10-24-18
08-25-21 10:45 AM - Post#2825953    
    In response to 51 AD 3100

  • 51 AD 3100 Said:
I have gone through 3 different gm rear ends and for one reason or another nothing really works without spending time and money to chase and change something that can be done easily with the 9 inch.


That is probably true. I'm doing exactly this on a '55 Series 2 rear axle. It's costing a fair amount of coin to change the ring/pinion, and to rebuild it and replace the bearings and seals. What I decided was this was a way for me to keep the original look of my truck and renovate the drive train so I have a nice driving truck and be able to keep my current 6-lug 5.5" wheels. I like the look mine has, and with an upgraded 235 I think it will have enough power.

Won't be as nice of an engine as a 283/327, that I will admit, but I'm not sure I need that much power in my little '46, it would be nice, just that I don't need it. I'm more looking for drive ability on the highway. Bringing the RPMs down so I can cruise on the freeway comfortably. The only real way to do that is with an OD transmission, hence why I'm swapping a T5 into it. Purists might not like that either, so there is no pleasing them.

Alan
"Keroppi" - 1946 Chevy 1/2 Ton Pickup


 
51 AD 3100 
Contributor
Posts: 213

Age: 55
Loc: Grant, AL
Reg: 08-30-20
07-29-22 06:09 AM - Post#2845102    
    In response to Keroppi

most s10 rears ive looked at were 3.08 or 3.42

Life's more fun, in a '51


 
51 AD 3100 
Contributor
Posts: 213

Age: 55
Loc: Grant, AL
Reg: 08-30-20
07-29-22 06:18 AM - Post#2845103    
    In response to Keroppi

yep, you'll get a lot of guys telling you to put this or that in ...theyre not the one driving it. ,you are. im not building a racecar either. just something fun to drive, decent on gas but enough power to let it eat once in a while. i had the good fortune of meeting 2 guys garage sam Memmolo in person...He used to be a Jaguar tech for years before he got into television diy car stuff. he retired from tv a few years ago and left that other guy also named Sam to take over the show "sams Garage" Anyway, I bought a Ford 9 inch housing from him. During the time, i got to pick his brain and show him pics of my project. i told him what i wanted to do with it , and he gave me the suggestion of a 3.25 rear gear behind my th350 . Currently Sam is building a 39 Plymouth coupe with a Jag rear end. Super nice guy . but since we met at a central location about 3 hours apart we both had to go home. I talk to him occasionally and send him progress pics of my fabrications on my truck. He says us "old school hot rodders" who still fabricate and figure stuff out are rare .


Life's more fun, in a '51


 
Keroppi 
Poster
Posts: 75

Loc: NorCal
Reg: 10-24-18
09-12-22 04:40 PM - Post#2847241    
    In response to 51 AD 3100

  • 51 AD 3100 Said:
yep, you'll get a lot of guys telling you to put this or that in ...theyre not the one driving it. ,you are. im not building a racecar either. just something fun to drive, decent on gas but enough power to let it eat once in a while


Yeah, if you want to drive it, it becomes a different puzzle to solve. If all one wants is to restore to OEM standards, they will most likely end up with a trailer queen they haul to shows. For some guys that's what they want, wear their sweaters and drive their old cars with flowers on the dash... :tongue :

  • 51 AD 3100 Said:
Ford 9 inch housing from him. During the time, i got to pick his brain and show him pics of my project. i told him what i wanted to do with it , and he gave me the suggestion of a 3.25 rear gear behind my th350.


Getting it setup right is what really matters, since short of that you will be pulling your hair out for a long time, IMO.

  • 51 AD 3100 Said:
Currently Sam is building a 39 Plymouth coupe with a Jag rear end.


That sounds interesting, but having owned a Range Rover in the past, I will never buy another English vehicle...LOL There's a guy, Paul Cangialosi, who rebuilds T5s, and he makes adapters to put a T5 in the Jags.

There are more people that use the Ford 9" rear ends than any other rear axle, AFAIK. I might have done that if I was to do it over again, not sure. I thought it would be wise to be able to use my wheels as they cost about $100/ea to buy new ones from what I could tell...good luck finding them used...

Hot Rods were originally created out of parts that were readily available, and why they used Model As and Model Ts, there were a plethora of them that people didn't really want...

We build them for whatever reason we have, and I have my own as you have yours. Good luck with your build and most of all have a blast driving it!

Alan
"Keroppi" - 1946 Chevy 1/2 Ton Pickup


 
51 AD 3100 
Contributor
Posts: 213

Age: 55
Loc: Grant, AL
Reg: 08-30-20
09-18-22 07:27 AM - Post#2847462    
    In response to Keroppi

Before his television hosting days Sam Memmolo was a Jaguar technician . So im sure hes using it because he knows them well.

Life's more fun, in a '51


 


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