The Stovebolt Site Forums The Parking Lot Big Bolts Carbs - Rochester/Carter

According to the original specs I got from GM, my 46 Two Ton came with a Carter W1-574 Carb. Over the years someone evidently changed over to a Rochester. Wanting to go back to original equipment I find that none of the suppliers will accept my Rochester core for a rebuilt Carter. Am I right about this or does it make any difference?

Your right about the Carter W 1. You might try ebay to pick up a core they sometimes sell for very little. The correct W 1 for your truck will out preform the old Rochester.

ttodd, that Doodlebug is awesome. You don't have a cheat sheet for the transmissions taped to the dashboard, do you? ;}

George, give these folks a call:

http://www.thecarburetorshop.com

-W

Hey stark thanks for compliments on old Sam. I don't have a cheat sheet but with help from a rider for the two speed and the second trans I've been able to get up to about 30 of the gears be for missing a split. Old Sam has been very useful for junk moving and has pulled or winched about any thing I've hooked on to. Is the big junkyard at Cabool still open.

I appreciate the responses. But, it seems I have a mystery on my hands. I ordered the original specs. from GM for my 1946 Two Ton (assembled at the Janesville WI plant in July of 1946 per the chassis number) and it states very clearly that the engine is a 235 ci and that the carb is a W1-574. Every carb. shop/expert that I talk to tells me that the W1 574 was for the 216 cu. in. engine and won't fit the 236 manifold which calls for mounting holes 2 15/16 inches (center to center) holes rather than 2 3/4 for the 216 intake manifold. This is driving me crazy. I want to go back to original equipment but can't seem to find anybody, expert or amateur, that can give me an answer to this problem. Is there anybody out there that can enlighten me?

George - keep in mind that in 46 the standard engine was the 216 - if the 235 you have in now is the original, GM might have used a manifold that would take the most common carb they had on hand ... the "experts" are talking about the 54+ full pressure 235, which may have a different manifold than yours - what do your manifold mount studs measure? anybody know what the actual spacing measurement is on the W1? maybe you should check w/ Carbking , he'll sort ya out [carbqueen AT sbcglobal.net]

Bill

The low pressure 235 and 216 are nearly identical and all the parts should interchange. A lot of parts people not familiar with older Chevy will think of the high pressure and later 235. I have a Carter YF on my 48 235 which came off a 216 that I had to replace in my 39. I have the smaller bolt spacing on the intake manifold.

The Carter will certainly outperform the Rochester.