Vintage Chevrolet Club Forums
A nonprofit organization dedicated to the preservation, restoration and enjoyment of all Chevrolets and GMCs.

VISITORS: You are welcome to read our forums. If you want to participate FREE then you need to register. Join the VCCA and get access to the member-only features of the forum, including the ability to attach/upload photos. You'll also receive our monthly magazine "Generator & Distributor". Yearly membership as low as $25!

VCCA MEMBERS: Already a member? Great! Info to access the members-only area.

Page 2 of 2 < 1 2
Topic Options
Rate This Topic
#315607 - 08/13/14 09:24 PM Re: Activity [Re: 41specialdeluxe]
Uncle Ed Offline

1000

Registered: 08/30/06
Posts: 1324
Loc: Iowa
Hey Charlie, Maybe if you had a 3.73 rear end like my stock '37 Master you could keep up with it! Seriously, I can't tell a great deal of difference between it and my '48 Fleetline with 15" tires. (not sure what ratio the '48 has) nanana
_________________________
Ed

Top
#315615 - 08/13/14 10:39 PM Re: Activity [Re: Uncle Ed]
Chev Nut Offline




Registered: 01/08/02
Posts: 24989
Loc: West Allis,Wi.
The 15" wheels in 1948 is NOT an early/late thing. The 15" wheels with low pressure tires were an option. The low pressure tires were much fatter and were designed to improve riding quality. 24 pounds of air was all that was required.
the tires used by GM were the US Royal Air Ride, The Firestone Super Baloon and the Goodrich Low Pressure.
Engine RPM"s were almost the same.
All 1948 Plymouths had low pressure tires (Good Year Super Baloons).
1948 Fords used regular 6.00X16 tires. In 1949 and 1950 Ford still used a 16" tire with the 15" low pressure optional.
The 1948 Chevrolet Engineering Features shows the advantages of the low pressure tire.
The disadvantages were they wore out faster, squealed more in n, etc and steering was slightly harder for parking. Most owners inflated them to 26 or 28 pounds (cold)

A 1937 Master with the 3.73 will not sound any better at high speeds than the 1948 with the 4.11. This is due to the larger, noiser fan blade used with the factory 3.73 gears. The better insulation used in 1948 may have helped also.


Edited by Chev Nut (08/13/14 10:42 PM)
_________________________
Chevgene

Top
#315649 - 08/14/14 03:16 AM Re: Activity [Re: Chev Nut]
Uncle Ed Offline

1000

Registered: 08/30/06
Posts: 1324
Loc: Iowa
I agree! I think the improved insulation etc. was a big factor in the sound and vibrations transmitted.
_________________________
Ed

Top
#315651 - 08/14/14 03:34 AM Re: Activity [Re: Chev Nut]
decarter Offline

Oil Can Mechanic

Registered: 01/02/02
Posts: 656
Loc: Novelty, OH
It's usually not a good thing to disagree with Gene, so I'm treading lightly here. :-) I had come to the conclusion that the 15" tires were a late '48 addition for a couple reasons. When I read the August-September 1948 Chevrolet Dealer News, it talks about the new 6.70-15 low pressure tires. I just always thought this was their introduction to the dealer network. My rationale was supported in my mind since I can't find any evidence in my April 15, 1948 Master Parts Catalog that 15" tires were an option yet. No speedometer gears for passenger cars with 15' wheels (Group 4.337). Only 16" wheels available for passenger cars (Group 5.803). Based on that, I jumped to the conclusion that late in the model year, they introduced the 15" tires...
_________________________
Dale Carter
VCCA #8661
1948 Fleetmaster Convertible

Top
#315655 - 08/14/14 05:34 AM Re: Activity [Re: decarter]
Keith Knox Offline

Oil Can Mechanic

Registered: 01/14/02
Posts: 589
Loc: Napa CA
Just looked at my 48 spec pack and it shows 16 x 4.00E and 15 x 5K. Don't know what the letters stand for. I heard the 15's were an option, but don't know when they would be an option. I have my original 16's in the garage. I bought a set of 15's for my 48.
_________________________
1946 Chevy 3100 1/2 Ton Pickup Purchased 11/18/17
1948 Chevy Fleetmaster Coupe, Purchased 6/20/2010
1962 Ranchero with V8 conversion Purchased 4/2017
1996 Monte Carlo 63,000 Miles, purchased new --6/16 Donated
2013 F-150 Crew Cab

Top
#315663 - 08/14/14 11:59 AM Re: Activity [Re: decarter]
Chev Nut Offline




Registered: 01/08/02
Posts: 24989
Loc: West Allis,Wi.
1948 0ption list dated 2-1-48.
Tires with 15" wheels.
6.70x15 4 ply option #287A
6.70x15 6 ply 288A
6.70x15 white wall one side #290A

Page 21 of 1948 Engineering Features(published Jan of 1948.
Regular production options, first item
The selection of regular tire production options has been enlarges for 1948. Newly designed 6.70x15 4 and 6 ply tires may be obtained in conjuction with 15x5K wheels..............almost 1/2 page of description.

1948 production began in Feb. of 1948.

_________________________
Chevgene

Top
#315674 - 08/14/14 02:18 PM Re: Activity [Re: Chev Nut]
decarter Offline

Oil Can Mechanic

Registered: 01/02/02
Posts: 656
Loc: Novelty, OH
Thanks, Gene! As I said - usually not a good idea to disagree with you. :-)
_________________________
Dale Carter
VCCA #8661
1948 Fleetmaster Convertible

Top
#315677 - 08/14/14 02:31 PM Re: Activity [Re: decarter]
Chipper Offline




Registered: 11/22/01
Posts: 16632
Loc: The Great State of TEXAS
When you have the first hand experience backed up with Chevrolet literature and take the time to consult both the advice is as close to 100% as humanly possible. Gene is truly a wealth of knowledge and VCCA asset. Proud to have him helping us all better understand Chevrolet history.
_________________________
How Sweet the roar of a Chevy four!

Top
#315694 - 08/14/14 06:56 PM Re: Activity [Re: Chipper]
chevy50jim Offline

Backyard Mechanic

Registered: 10/24/04
Posts: 391
Loc: Denver, Colorado
iagree

Top
#315704 - 08/14/14 10:00 PM Re: Activity [Re: chevy50jim]
ken48 Offline




Registered: 02/11/05
Posts: 2338
Loc: The Green Mountain State
Yup.....Gene is the man. luv2

Just remember, if you don't listen to what Gene has to say.........you're probably gonna make a mistake!!!!
_________________________
ken48
VCCA Member #42589



Top
#315853 - 08/16/14 02:15 PM Re: Activity [Re: ken48]
decarter Offline

Oil Can Mechanic

Registered: 01/02/02
Posts: 656
Loc: Novelty, OH
Was there ever a point in 1948 production where 15" wheels became standard and not an option?
_________________________
Dale Carter
VCCA #8661
1948 Fleetmaster Convertible

Top
#315856 - 08/16/14 02:24 PM Re: Activity [Re: decarter]
Chev Nut Offline




Registered: 01/08/02
Posts: 24989
Loc: West Allis,Wi.
No....you could have the last 1948 made and if the dealer didn't check the 15" option box on the order it would have 16" wheels.
I would suspect early in the year the dealer didn't understand or know what the option was all about so just did't order the 15" wheels. Also the cheaper Stylemasters would be less apt to have the 15" as it added to the cost of the car.
_________________________
Chevgene

Top
#317247 - 08/31/14 02:14 AM Re: Activity [Re: Chev Nut]
VCCA Son Offline
Oil Can Mechanic

Registered: 04/26/02
Posts: 749
Loc: SW , OH
Seems like a read somewhere that the Fleetline Series in 1948 came standard with 15" wheels. Now I will have to research where I saw that.

Dale - did you run the '48 up to 65 mph ?


_________________________
Member 41+ years, been around since the beginning !

Top
#317249 - 08/31/14 02:38 AM Re: Activity [Re: VCCA Son]
Chev Nut Offline




Registered: 01/08/02
Posts: 24989
Loc: West Allis,Wi.
We just had the discussion a few weeks ago. The 15" wheels were optional for all models.Just look at the beginning of this thread.


Edited by Chev Nut (08/31/14 02:39 AM)
_________________________
Chevgene

Top
#317251 - 08/31/14 03:01 AM Re: Activity [Re: VCCA Son]
Uncle Ed Offline

1000

Registered: 08/30/06
Posts: 1324
Loc: Iowa
A '48 with 15" wheels will easily run 65 mph. and the engine is not that noisy at that speed.
_________________________
Ed

Top
#317257 - 08/31/14 05:41 AM Re: Activity [Re: Uncle Ed]
Junkyard Dog Offline




Registered: 11/23/01
Posts: 28629
Loc: Eagle Point, Oregon
Yep!

laugh wink beer2
_________________________
The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"

Top
#317352 - 08/31/14 11:40 PM Re: Activity [Re: Junkyard Dog]
the toolman Offline


1500

Registered: 12/25/01
Posts: 1907
Loc: Canton, OH
I have enjoyed all of the information relating to tire size for a 1948 Chevrolet. I learned a lot. I guess that the only thing left to do is for me to challenge Cousin Dale to drive 65 mph and try to keep up with me at the Six Cylinder Tour in New York. I will be the one in the Battleship Gray 40 Coupe driving 65 on the interstate.

dtm
_________________________
the toolman
Central #7A Area Director
National Judging Chair
www.1940chevrolet.com
VCCA # L 28873
VCCA #83 Tool Technical Advisor for 1937-1966

Top
#317367 - 09/01/14 01:18 AM Re: Activity [Re: the toolman]
decarter Offline

Oil Can Mechanic

Registered: 01/02/02
Posts: 656
Loc: Novelty, OH
I'll be the guy in the Oxford Maroon '48 driving 57 mph. :-)
_________________________
Dale Carter
VCCA #8661
1948 Fleetmaster Convertible

Top
#317370 - 09/01/14 01:34 AM Re: Activity [Re: decarter]
Chipper Offline




Registered: 11/22/01
Posts: 16632
Loc: The Great State of TEXAS
Dale just put a tow rope between cousin Dave's and yours so you can follow at 65 mph. Will save a bunch of gas to boot.
_________________________
How Sweet the roar of a Chevy four!

Top
#317376 - 09/01/14 02:12 AM Re: Activity [Re: Chipper]
Chev Nut Offline




Registered: 01/08/02
Posts: 24989
Loc: West Allis,Wi.
I look a it this way. If the car can maintain 57 MPH whats few more miles per hour...and drive 65.
_________________________
Chevgene

Top
Page 2 of 2 < 1 2


Moderator:  Bill Barker, Chevykid 
Your Status
Please login to post or reply.* * *
Send My Password
Who's Online
1 Chat Members (Peter_Gariepy), 1 Guest and 29 Spiders or Bots online.
Key: Admin, Global Mod, Mod
Today's Birthdays
32confederate
Helpful Links
Forum Registration
New User Forum
Members Only Forum
Reset Your Password
Kill Your Cookies

VCCA Home
Join the VCCA
Member Photos
My 31' Chevy Show
What is missing?
31' headlight reflectors re-silvered at home
1936 Roadster - S. Africa
Chevy on the Levee
'37 Seat
Forum Stats
15086 Chat Users
79 Forums
50178 Topics
366686 Posts

Max Online: 304 @ 06/18/16 10:00 AM

 

Notice: Any comments posted herein do not necessarily reflect the official position of the VCCA.