The Stovebolt Page Forums Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Work those trucks!




Stovebolt is pleased to support the Salvation Army!
We're doing fine but many around the World are not. Instead of making a contribution to us this holiday season, how about making your contribution to a great organization with a long history of helping people in need around the world?

Stovebolt Site Search
 
Old Truck Calendars
Months of truck photos!
Nothing like an old truck calendar

Stovebolt Calendars

Check for details!


Who's Online Now
5 registered members (Hotrod Lincoln, Cornbinder, Sonchito, Rusty Rod, homer52), 238 guests, and 2 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums48
Topics116,582
Posts930,695
Members42,658
Most Online940
Apr 5th, 2017
Image Posting Policy
Previous Thread
Next Thread
Print Thread
Page 3 of 3 1 2 3
Re: Woah! She’s slow. [Re: Skidmarks] #1310158 Thu May 09 2019 06:17 PM
Joined: Jul 2014
Posts: 177
E
EchoBravoSierra Offline
Shop Shark
You can get a 3.38 gear for the '55-'59 (and up through '64?) half ton rear end, but I'd suspect you'd be feeling slow from starts with that versus slow up top with what you've got. I'd be willing to bet, based on my experience with my '50 half ton 3spd/4.11 and 216, that you aren't actually pulling as many rpms as it sounds like it is at speed.

Re: Woah! She’s slow. [Re: Skidmarks] #1310168 Thu May 09 2019 07:46 PM
Joined: Sep 2011
Posts: 547
B
BC59 Offline
Shop Shark
'63 is a different axle.
3.90:1 was stock.
I know you can cruise 65mph all day with a 235 & 3.90 rear axle because I drove To MA & back to OR several years ago. with no issues. Changed oil on the east coast before heading back. Still running same engine now, doesn't use oil. If it's in decent condition & valves are adjusted will not be an issue. Used to run 80 MPH with it back in high school (1970s) road racing a buddy with a Jeep wagoner hurricane 6.


BC
1960 Chevy C10 driver
1949 GMC 250 project in waiting
G.M dealer tech since 1980 & counting
Re: Woah! She’s slow. [Re: Skidmarks] #1310216 Fri May 10 2019 01:02 AM
Joined: Jun 2010
Posts: 248
B
bztguy Offline
Shop Shark
I replaced the Eaton HO52 rear end in my 49' 3600 with a Dana 60 from a 69' F250. Almost exact same width backing plate to backing plate. I had the drive shaft shortened by about 2.5 inches and a yoke welded on to mate up to the Dana 60. It has a 3.73 ratio along with 29" diameter tires and I can hit 60MPH at 2500 RPM with the stock 4 speed transmission.

Last edited by bztguy; Fri May 10 2019 01:03 AM.

1949 Chevy 3600
1975 W-25 Hurst Olds
1991 Chevy Silverado
1970 GMC 1/2 ton Fleetside

I'm a GM man!
Re: Woah! She’s slow. [Re: bztguy] #1310279 Fri May 10 2019 03:47 PM
Joined: Sep 2011
Posts: 547
B
BC59 Offline
Shop Shark
Skidmarks rig is a 1/2 ton


BC
1960 Chevy C10 driver
1949 GMC 250 project in waiting
G.M dealer tech since 1980 & counting
Re: Woah! She’s slow. [Re: Skidmarks] #1310281 Fri May 10 2019 04:07 PM
Joined: May 2005
Posts: 9,134
G
Grigg Offline
.
Axle ratio, tire diameter, and engine RPM are useful for comparison regardless of truck model.


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
Re: Woah! She’s slow. [Re: Skidmarks] #1310283 Fri May 10 2019 05:11 PM
Joined: Feb 2004
Posts: 19,277
H
Hotrod Lincoln Online
Boltergeist
Back in the mid-1960's I ran a 58 Chevy 2 door sedan with a 235, 3 speed, and a 3.70 rear end. It had low profile 14" tires on it, standard for that model. I had no trouble keeping up with traffic at 65-70 MPH, and the mid-80's were not too difficult. With 3.90 gears and the same 1:1 high gear ratio in the transmission, a bone-stock pickup with a 235 should be able to do similar speeds because of the taller tires.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Woah! She’s slow. [Re: Skidmarks] #1310423 Sat May 11 2019 11:33 PM
Joined: Jul 2000
Posts: 743
G
Gord&Fran Offline
Shop Shark
Today, I stuck the GPS onto the windshield and took the truck out on the highway. At 90 KPH (about 55 MPH), the speedometer indicated 40 MPH; this speedometer error is pretty close to what I calculated it would be. Engine RPM is about 1750 at this speed in 4th gear.

Rear axle ratio is 2.41. Tires are 767 revs/mile.


Gord
----
1954 1/2 ton 235 4 speed
"I am not the kind of person who gets things done yesterday. I get them done when I feel like it. Often I do not get them done at all" - Joe Queenan
Re: Woah! She’s slow. [Re: Skidmarks] #1311226 Mon May 20 2019 01:44 AM
Joined: Sep 2009
Posts: 107
S
Skidmarks Offline OP
Shop Shark
So I was looking into a different differential. Will a new ring gear and pinion work? Are these old rear ends compatible with a new ring gear swap or am I wasting my energy?


1958 Chevy Apache Fleetside/235/3 sp
Pictures at http://www.facebook.com/album.php?aid=317454&id=855355703&l=0a0f773195
Re: Woah! She’s slow. [Re: Skidmarks] #1311229 Mon May 20 2019 02:03 AM
Joined: Sep 2001
Posts: 28,911
tclederman Offline
Boltergeist
"1958 Apache 235/3 speed . . .
Will a new ring gear and pinion work?"

As EBS posted above

If you go that way, you might want to also use this installation kit.


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 48 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 14 years
Z-series (54/55) GMC 350 (2-ton) COE - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler.
Re: Woah! She’s slow. [Re: tclederman] #1312811 Sat Jun 01 2019 07:52 PM
Joined: Jul 2014
Posts: 177
E
EchoBravoSierra Offline
Shop Shark
Originally Posted by tclederman
"1958 Apache 235/3 speed . . .
Will a new ring gear and pinion work?"

As EBS posted above

If you go that way, you might want to also use this installation kit.


You can get the install kit MUCH cheaper at Jeg's.

Page 3 of 3 1 2 3

Moderated by  SWEET 

Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Powered by UBB.threads™ PHP Forum Software 7.7.3