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**THI** · 02-25-2020, 07:52 PM

That is a Dana 44. In 1977 GM started using the 10-bolt in the front, but still used the Dana 44 into the 1980 model year. I have owned a 1977 K20 with a Dana 44 front, and a 1979 K20 with a 10-bolt front, and currently have a 1978 K25 with the Dana 44 Front axle (soon to switched with a Dana 60).

02-25-2020, 07:52 PM	#5
THI Active Member Join Date: Jan 2017 Location: Traverse City, MI Posts: 169	Re: 1977 C20 front axle identification That is a Dana 44. In 1977 GM started using the 10-bolt in the front, but still used the Dana 44 into the 1980 model year. I have owned a 1977 K20 with a Dana 44 front, and a 1979 K20 with a 10-bolt front, and currently have a 1978 K25 with the Dana 44 Front axle (soon to switched with a Dana 60).