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54 vs 55 1st series 3100
#58172 Thu Mar 23 2006 03:52 AM
Joined: Mar 2006
Posts: 15
B
Brian54 Offline OP
Apprentice
Could somebody out there please tell me the difference between the 54 & 55 1st series 3100? Thanks

Re: 54 vs 55 1st series 3100
#58173 Thu Mar 23 2006 03:57 AM
Joined: Mar 2004
Posts: 3,087
Shop Shark
A model year? I don't think there's any other difference,
Scott


Scott Ward

2 1948 1.5-ton Loadmasters
The red one and The snow pusher
1 1950 3100
1 1955.1 Chevy 6500
1 1954 Chevy 6500 2-Ton
1 1955 1st Series COE 5700
1 1963 K20 (454)
1 1964 C10 (350)
1 1951 1.5-ton Dump Truck
1953 and a 1956 Ford F800

Raising a teenager is like trying to nail Jello to a tree!
Re: 54 vs 55 1st series 3100
#58174 Thu Mar 23 2006 04:44 AM
Joined: Sep 2001
Posts: 29,538
ace skiver
Different side emblems on the hood.

Open driveshaft in 1955-1st.

H55 as the first three characters on the door hinge pillar plate for 1955-1st; H54 for 1954.

Different shades/names for the "white" top on the exterior two-tone deluxe cab.


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 15 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: 54 vs 55 1st series 3100
#58175 Thu Mar 23 2006 11:03 PM
Joined: Jun 2004
Posts: 8,173
W
Master Gabster
Like TC says the main difference is the open drive shaft on the 55-1. There is also a different water pump & pulleys. I believe the 55 is 12 volts. Someone correct me if i,m wrong.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.

1956 Chevy 1/2-Ton Pickup

Re: 54 vs 55 1st series 3100
#58176 Fri Mar 24 2006 03:52 AM
Joined: Oct 2003
Posts: 5,161
O
Cruising in the Passing Lane
The '55 1st Chevy I have is six volt.


Its true, I really don't do anything but browse the Internet looking for trouble...
Steve@OldSub.com . www.OldSub.com . www.MaxwellGarage.com . www.OldGasTowRigs.com
'55 1st GMC Suburban . '54 GMC 250 trailer puller project. '54 GMC 250 Hydra-Matic . '54 Chevy 3100 . '47 Chevy COE . and more...
Re: 54 vs 55 1st series 3100
#58177 Fri Mar 24 2006 12:49 PM
Joined: Feb 2006
Posts: 395
D
Shop Shark
55 1st ser is 6 volt...doc

Re: 54 vs 55 1st series 3100
#58178 Fri Mar 24 2006 06:30 PM
Joined: Mar 2005
Posts: 503
5
Shop Shark
A significant difference is the open drivetrain. Both have 3.90 differential but if you intend to keep the rear axle and swap gears you can go with 3.38 while the 54 swap is for 3.55. The rear springs are the same overall length but the "center" hole is located differently. The 54 rear spring mounts to an offset rubber insulated "projection" off the axle while the 55.1 bolts directly to the axle. In 54 the grill background color is white but is black on 55.1.


Mike

1950 GMC 1-ton pickup, 55.1 Chevy 1/2 ton pickup
Re: 54 vs 55 1st series 3100
#58179 Fri Mar 24 2006 07:59 PM
Joined: Mar 2001
Posts: 394
B
Shop Shark
Chrome grills were offered for the 55.. 6v trucks...biggest difference is the hotchkiss rear end...no torque tube...and as pointed out the--option now to go to 3:38 gears. The 55.1 (the last of the breed) was factory superior to the 54 from a highway perspective and incorporated the open rear end which virtually all rodders of prior year AD trucks perform on their trucks to make them hiway capable.

Importantly, the 55.1 was only in production for 1/2 year and in my experience is far more difficult to locate.


Buzz'n Half Dozen
Re: 54 vs 55 1st series 3100
#58180 Sat Mar 25 2006 01:09 AM
Joined: Sep 2001
Posts: 29,538
ace skiver
50GMC253,

I am very interested in knowing more about 1955-1st grills. It is my understanding that the standard 1955-1st grill is all white (no "inner" and "outer" grill different in color). Is that correct?

When you state "In 54 the grill background color is white but is black on 55.1.", are you referring to the chrome grills for both years?

Thanks,
Tim


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 15 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: 54 vs 55 1st series 3100
#58181 Sat Mar 25 2006 07:23 PM
Joined: Apr 2002
Posts: 1,574
G
Shop Shark
I guess we're back to posting the same question in multiple forums again...

As far as the grilles go, my 54 4400 is solid white.


Get a REAL truck, get a GMC! www.oldgmctrucks.com
1954 GMC De Luxe COE
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