Np205 vs Dana 20

[nolidnoworries]

Going to look at buyin a new K5 tomorrow but kinda worried about the tcase. Truck is a 72 with a stock 350 and 4 speed manual tranny. The guy tells me that it doesnt have that "granny low" gear so im thinkin it may have the d20 tcase but i know nothing about them so any comments would be appreciated.

 

[Dabba]

yeah, ill subscribe to this, i never hear about the dana 20s and would like to know more about them..

 

[Hogback Fabrication]

Even though they are gear driven, they are MUCH weaker than a 205.

Here's a recent thread from a local forum, you'll find many similar cases if you search google and pirate4x4.com.

Its tough to say how they compare to a 208 or 241 strength-wise but D20's certainly aren't unbreakable.

 

[resurrected_jimmy]

Dana 20's are a 2 speed t-case with about a 2.46:1 ratio. If it is a single speed T-case its probably a Dana 21. I thought only Ford used this case though.

 

[76zimmer]

they are much smaller than a 205 also....I would say for their size they are strong, but certainly not a 205.

http://www.novak-adapt.com/knowledge/model_20.htm

 

[Dabba]

also was wondering what gms got these? never head of anything other than the 203, 205, 208 and 241s?

 

[3 on the tree]

I have one in my 70 K5. The only thing I dislike about it, is the "J" shift pattern.

According to a 1970 sales brochure I have, the Dana 20 was the standard T case. If you wanted the 205, you paid extra.

Jeeps and Scouts also came with this T case. The Scouts were actually twin sticked, from the factory!

 

[jt512]

Going to look at buyin a new K5 tomorrow but kinda worried about the tcase. Truck is a 72 with a stock 350 and 4 speed manual tranny. The guy tells me that it doesnt have that "granny low" gear so im thinkin it may have the d20 tcase but i know nothing about them so any comments would be appreciated.

Maybe I am misunderstanding but it sounds like the seller is saying the transmission doesn't have the "granny gear" .

 

[nolidnoworries]

no he was just saying that it doesnt have a super low 1st gear even in low range, ive done a little research and it seems like it is pretty rare to find one, they offered 2 different manual trannys at the time and i think the d20 came with the 3 speed

 

[BGKYK5]

Check out the specs section of this very site.

It looks like the D20 was available up to '73 only behind a manual trans. It also looks like the D20 has a 2.03:1 low range and that the only four speeds were the 465 that does have a granny low. If it is stock I would guess it has a three speed manual.

 

[resurrected_jimmy]

that clears things up some. I knew that the Dana 20's came in some early chevys but did not know what trans they were bolted up to.

I mistook the original poster as saying the t-case did not have a low gear which would make it a Dana 21 (a wortheless t-case)