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K5Fan · 09-16-2023, 05:33 AM

Good Morning All...

I know I've asked or seen a post on this before, but I have a a 70 K5 with a 350CID engine and a manual four speed with the "Granny Gear", but 1st gear is useless to me. I can put it in 1st (Granny) and walk faster that the truck will go. I'm happy with the manual gear box, but it's a waste to have an extra gear and not to be able to use it.

I'm going to check the ratio, but is changing the differentials to a higher gear the the only way to make 1st Gear usable?

It runs very well from 2nd to 4th as is, but being able to turn the RPMs down for highway use, as I'm sure you know, would make less RPMs on the highway, and not only save on gas, but engine wear.

This is an awesome site and forum, and I'm glad to be a part of it! If I could only figure out how to make my profile picture look better! Thank Youuuu!

09-16-2023, 05:33 AM	#1
K5Fan Registered User Join Date: Oct 2020 Location: Charleston SC Posts: 65	Granny Gear Good Morning All... I know I've asked or seen a post on this before, but I have a a 70 K5 with a 350CID engine and a manual four speed with the "Granny Gear", but 1st gear is useless to me. I can put it in 1st (Granny) and walk faster that the truck will go. I'm happy with the manual gear box, but it's a waste to have an extra gear and not to be able to use it. I'm going to check the ratio, but is changing the differentials to a higher gear the the only way to make 1st Gear usable? It runs very well from 2nd to 4th as is, but being able to turn the RPMs down for highway use, as I'm sure you know, would make less RPMs on the highway, and not only save on gas, but engine wear. This is an awesome site and forum, and I'm glad to be a part of it! If I could only figure out how to make my profile picture look better! Thank Youuuu!