|
|
|
|
Joined: Mar 2007
Posts: 127
Shade Tree Mechanic
|
OP
Shade Tree Mechanic
Joined: Mar 2007
Posts: 127 |
I have a few questions about rebuilding the 4 speed box in my 28 truck. Firstly are there any repro drive gear retaining plate out there for the 4 speed as per Billy Possum's 3 speed replacement. Secondly am after the dimensions of the gearshift interlock plate (part nos 551960,61, 62) which are badly worn on my box. Can anyone help. Was the four speed used on any later models and if so are internals interchangeable. Finally are universals and clucth plate from later models interchangeable and if so what models.
|
|
|
|
|
Joined: Apr 2004
Posts: 988
ChatMaster - 750
|
|
ChatMaster - 750
Joined: Apr 2004
Posts: 988 |
Post deleted by 35 pickup man
34 & 35 trucks are the greatest. 36 high cabs are OK too.
|
|
|
|
|
Joined: Jan 2002
Posts: 2,299 Likes: 8
ChatMaster - 2,000
|
|
ChatMaster - 2,000
Joined: Jan 2002
Posts: 2,299 Likes: 8 |
Here are a couple answers to your Questions. The U-joint is the same for all 1 +1 1/2 tons from 1925-31 trucks. Clutch disc's 1925-28. That early 4 spd. trans. was used 1927-28 Models LM + LO. The 1928 LP used some different gears and parts.I have some NOS gears and bearings and thumb latch lever and detend springs for that early trans.
|
|
|
|
|
Joined: Apr 2004
Posts: 988
ChatMaster - 750
|
|
ChatMaster - 750
Joined: Apr 2004
Posts: 988 |
I believe the late 1928 LP model 1.0 ton trucks in 1928 used the same transmission (4 speed) that was used up till 1931 (early 31 LT series 1.5 ton trucks). Mid-1931 M series a new heavier duty 4 speed transmission was introduced up with a 6 bolt PTO mounting.
34 & 35 trucks are the greatest. 36 high cabs are OK too.
|
|
|
|
|
Joined: Jan 2002
Posts: 2,299 Likes: 8
ChatMaster - 2,000
|
|
ChatMaster - 2,000
Joined: Jan 2002
Posts: 2,299 Likes: 8 |
I also have NOS main drive gear bearing retainer plates. E-mail me bwbugay@aol.com
|
|
|
|
|
Joined: Jan 2002
Posts: 2,299 Likes: 8
ChatMaster - 2,000
|
|
ChatMaster - 2,000
Joined: Jan 2002
Posts: 2,299 Likes: 8 |
A 1929 Truck 4 spd. trans. was different from the rest of them. It used a 10 spline main shaft where as the earlier and later ones used a 6 spline main shaft and related parts.
Last edited by chevy b; 03/18/07 10:49 AM.
|
|
|
|
|
Joined: Oct 2005
Posts: 124
Shade Tree Mechanic
|
|
Shade Tree Mechanic
Joined: Oct 2005
Posts: 124 |
Email Bluezone, he might be able to help you there, he has got the whole series '25 to '29 I think.
Good luck
How sweet is the roar of a Chevy four (Thanks Chipper)
|
|
|
|
|
Joined: Mar 2007
Posts: 127
Shade Tree Mechanic
|
|
OP
Shade Tree Mechanic
Joined: Mar 2007
Posts: 127 |
Recieved NOS gearbox parts from Bruce Bugay last week and assembled my 4speed box over the weekend. It now operates like new after a bit of welding and grinding of gear stick pivot. Surprisingly all bearings were available from my local engineering shop. Thanks for everyones help on this one esp Bruce whos assistance was invaluable.
|
|
|
|
|
Joined: Oct 2005
Posts: 124
Shade Tree Mechanic
|
|
Shade Tree Mechanic
Joined: Oct 2005
Posts: 124 |
Keep them rolling Good JOB!
How sweet is the roar of a Chevy four (Thanks Chipper)
|
|
|
|
|
|
|
