hello I'm owner of a gm pd4104 of 1957 number 2899 in bad condition I bought it without engine and I need info about technical specifities can you help me ?
it's a manual gearbox and I want to be sure that this model needs a left hand turning.
Where can I find windschields and new rubber for air suspension.
thank's for your help
regards

Xavier

IM TRYING TO ADJUST THE GOVERNOR SO THE BUS WILL DO ABOUT 70 MILES PER HR

PD 4104 is not geared to do 70 or you'll overrev. The optimal top end is about 66 mph, about 43 mph in 3rd.

I have a 1960 4104 not sure if you are still looking for parts or anything else she still runs and drives great i'm selling whole bus or possibly parting it out

If you have a 4104 that'll only do 64, you have a transit bus rear end in it. The standard parlor coach rear end would do 74 at 2100 RPM. The "Texas" rear end (found on a lot of TNM&O 4103 and 04s would do around 83.

I drove a LOT of these 04s, most of them second hand Trailways, some LTRs, and a couple bought brand new. The 04 was the DC3 of the bus business...go anywhere, do anything. The best 4104s I ever saw were run by Embree Buses of Pasadena, CA. They had the PD-4501-derived "HydraShift" clutch, making them 8 speeds. They could outrun any 4106 or even an MC-5 on the grades, and even in the '70s, they were s*** 'n span. Only thing negative about the 04 is when it didn't have power steering. They were heavier than the 4103s, and steered about as heavy as Ol' Silversides or those horrid Brills.

I travel since 1958 TIJUANA TO MEXICO CITY (1500 miles)in the 4140 they was the Kings of the road ,The line bus was " tres estrellas de oro" (tree golden stars) # 1 line in Mexico whit a flet of about 350 PD 4140 new buses, the best bus ever built.

i have a 4104 the elec. box on it fride i nead a nother one the number is e807035 or e807050 my cell is 307 256 0755

I have a 1953 PD4104 and am looking for information on converting this to power steering. Any information would be greatly appreciated.

the box i nead is number 1118416 it go on 58 4104 my new cell is 307 256 0755 call any time

i have a 53 4104 that im going to part out dont have anyplace to keep it anymore.would like to sell to someone who wants a pretty good coach.cheep cheep.but if you need parts ill sell them if no one wants whole bus.my name is rodney and my phone # is 859-553-1520 call anytime.i've got over 20 grand in it will sell for 5gs.4 batterys and drive it away.

My neighbor has a 1954 GM pd4104 bus rv conversion. Were trying to find any information about the bus but the only number for a vin we can find is u5u991. Can anyone tell me where to look for info?

Thanks

As a veteran of driving GMs in commercial service, I had one bit of advice...NEVER buy a later model 4104 that was a Greyhound. You'll get stuck with the 4.10 and all the usual Greyhound abuse and wear. If you're serious about getting one, try to find an ex-Trailways (gas A/C) '56-'57 model. Most of these came with the 3.875 rear and would do 73 or so at 2150. They were also better maintained than most "dogs."

A nice Trailways '04, and I've driven a few of them. If you had the serial number on the nameplate, I might be able to tell you what year. Judging from the pictures, it's a '54 through early '56 model with gas A/C. Best spotting feature for whether "early" or "late" is the air intake on either side of the rear window. Only the late 1953s had a separate cooling water cap above the A/C engine bay behind a hatch. The Continental engine/Ingersol-Rand compressor for the early 4104 A/C was '53 only. After that, they used Waukeshas and Trane V-type compressors with more capacity. Hound used Waukesha diesels and Carrier compressors.

@Steve Samson Power steering was NOT available on the early 1953 4104s. PS was first installed on the big late '53s for Greyhound. It uses a Vickers pump gear driven on the engine and a control valve in the steering sector, with a power cylinder on the drag link. Conversion would depend on you finding a 4104 that's junk to get the pump, lines, steering sector and cylinder plus all lines. Good luck on that. To ease your steering, always jack up the front axle to lube your king pins. It makes a world of difference.