|
|
|
|
Joined: Dec 2004
Posts: 173 Likes: 1
Shade Tree Mechanic
|
OP
Shade Tree Mechanic
Joined: Dec 2004
Posts: 173 Likes: 1 |
I came across a new or rebuilt W-1 carb with a brass tag with the number 839987 on it. Does anyone know the application for this and will it work on my '37?
|
|
|
|
|
Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
|
|
ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
That is a 1941-48 carb. It will "work" on your 1937 but is calibrated much leaner than the 1937-40 carb. Due to engine changes/improvements the 1941-48 could use a leaner mixture.
I did experiment with that carb. on my 1939. The most noticable problem was a slight lean surge at mid road speeds (40 to 60 MPH). Fuel milage was about the same.
Due to the engine changes (and carb) the 1941-48 cars gave better milage.
Gene Schneider
|
|
|
|
|
Joined: Dec 2004
Posts: 173 Likes: 1
Shade Tree Mechanic
|
|
OP
Shade Tree Mechanic
Joined: Dec 2004
Posts: 173 Likes: 1 |
|
|
|
|
|
Joined: Nov 2007
Posts: 476
Backyard Mechanic
|
|
Backyard Mechanic
Joined: Nov 2007
Posts: 476 |
Gene,
Is there a way to identify the 41-48 carburetors vs. the 37-40 if the brass tag is missing?
Mark Yeamans
VCCA #35724
|
|
|
|
|
Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
|
|
ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758 Likes: 64 |
The answer is a qualified yes. The 1937 and '38 are easy because they have a unique throttle arm. It has an additional horizontal tab for the throttle cable. '37 has the two piece choke plate '38 and later a single plate. After that it can get a bit more difficult. If it has 421 cast into the float bowl it will be a '41 or later (except for those that are a replacement for earlier models). Internal part differences will identify other years/models.
How Sweet the roar of a Chevy four!
|
|
|
|
|
Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
|
|
ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Also the 1940 and older have a 1 7/16" throttle bore and the 1941 and up 1 1/2".
Don't recall if I have a 1937 but do have some 1938 rebuildable "cores".
Last edited by Chev Nut; 01/07/09 10:40 PM.
Gene Schneider
|
|
|
|
|
Joined: Jan 2002
Posts: 175
Shade Tree Mechanic
|
|
Shade Tree Mechanic
Joined: Jan 2002
Posts: 175 |
Also, per some Carter info I have, there could be a stamped number or letter on the base of the carb where it mounts to the manifold. If you find one let me know and I will dig into my literature.
|
|
|
|
|
Joined: Nov 2001
Posts: 29,863
Tech Advisor ChatMaster - 25,000
|
|
Tech Advisor ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,863 |
The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
|
|
|
|
|
|
|
