The Stovebolt Site Forums The Shop Area Engine Shop Different age w-1 carter carbies...interchangable?

I have a 46 chevy truck project but it has the single hole water pump so engine may be an older 38 model?? Anyway to add to my frankenstein machine it has a 49 carter carby that needs replacing and found a place i can get any year model carter w-1 carby, so is there any issue staying with a 49 carter on a possibly late 30's engine? Or should i try and stick to a mid 40's as per model truck?
Are they all interchangable etc?
Any help is great
Ps my carb runs but full if leaks etc and a bit shabby so might as well replace rather than kit as it needs more parts than just a kit.

FYI, the single hole 216 water pump was used from 1937-1940.

1949 W1's used on cars have a fast idle arm on them. Before that there was a throttle cable for fast idle.
If you have a choice I would get a year correct carb.

This might help you,
http://www.thecarburetorshop.com/CarterChevroletW1.htm

I agree, if you are going get one anyway, get the right year. If you choose to rebuild it, just get a kit and go for it, it may run better after a rebuild and not need replacing.

Joe

Thanks for info,
As im in Australia it is a better $$ option for me to buy than rebuild.
Ive been researching and it appears the w1 is more 'refined' in later models but basically the same design with minor 'fixes' added which i guess brings me back to the question should i go for a 38 carby or a better 46 model carby that had minor rrliability issues addressed. Or is the 38 one ok as ive read somewhere they recommend going a later model as better carbs.

I would get the 1946 carb.

Yeah I think I will. The more I research the more refined the carburettors got over time and 46 will match my car and it appears to be a much better designed carb than the early 30s ones

As I recall the 1949 W-1 was a one year only model. Some years ago I needed mine rebuilt and the parts had to be special ordered. That may have changed by now????? I think I'd go with the '46 version too.

Yeah ive read the 49 is a 1 year special and a pain to source parts so will sell it off once new one arrives...going for a 46 to suit truck year,