Carter did not offer a carburetor for the 261. For best results on the 261, use either a Zenith 28 or 228 for the GMC 270 (as previously posted) or one of the Stromberg "B" series replacement carbs. Both work very well.
Jon.
Good carburetion is fuelish hot air The most expensive carburetor is the wrong one you attempt to modify. If you truly believe "one size fits all," try walking a mile in your spouse's shoes! The Carburetor Shop
