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Stepping upp

E

Espen88k5

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I'm on 35 12,5 15 Bfg mud/terrains , running 10 bolt's with 3.08
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So I have been looking around and look what I found for 400 US$[smilie]
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<a target="_blank" href=http://www.espen88k5.alloffroad.com>www.espen88k5.alloffroad.com</font color=red>[/b]
 
Well the 12 bolt would be a step up from the rear 10 bolt...however 77 might have the same gears you already have. My old 77 with 350, TH350, NP203 came with 3.08's...

You could have better gears swapped in though.

Rene

<font color=green>Dyslexics of the world...UNTIE!</font color=green>
<a target="_blank" href=http://coloradok5.com/gallery/project_T2> tRusty pics...</a>
 
Look for a tag on one of the bolts on the cover of the front D44. If the tag is there it will have the Gear ratio on it. Also see if the build sticker is still in the glove box. If it's anything but the stock Gear it will be listed there.
350's got a stock gear of 3.08
292 I6's got a 3.73.
Also do you know where any 87 up K5's for sale are over there? We have a new person here looking for a K5 to tow at 3000lb boat with. Look for a post from Tall_Girl.

Women dig dents and flat paint!
coloradok5.com/gallery/Grim
75 Jimmy, Dollar
Grim-Reaper
 
I will pull both covers before I buy it anyway. So if it's not 3.73 in there I wont buy it. Good information as always, thanks!


<font color=red><a target="_blank" href=http://www.espen88k5.alloffroad.com>www.espen88k5.alloffroad.com</a></font color=red>
 
Well it looks like 3.73's were the gears that came with the 4 speed trucks. Slydogs is a 4 speed and so is Mudhogs 77. My 77 was a slushbox with 3.08's and as far as I know that was the standard ratio for the auto trucks in those years.

Good luck with it Espen!

Rene

<font color=green>Dyslexics of the world...UNTIE!</font color=green>
<a target="_blank" href=http://coloradok5.com/gallery/project_T2> tRusty pics...</a>
 
I think the workers at the assembly plants just tossed in whatever was handy.
My 78 had 3:73's 12B/D44, and it originaly had a 400sb, 350/203.


<font color=green> Too bad ignorance isn't painful </font color=green>
 
I just checked my ratio last weekend and I've 3.73's with a 350/th350/203 all stock. Maybe I was the lucky one.
smile.gif


Just collecting rusty mid-70's chevy's
1976 Blazer, 1975 Vega SW
 
3.73's were an option. the Lady's 79 with a TH350 has them also. It was port of the towing package. If the truck didn't have the towing package it got the 3.08's
465's got a mix for some reason. some had 3.08's and some had 3.73. I have run across (was one Depdog parted) a 2wd K5 with a 465 with 4.10. I have the rear axle laying on my drive right now. The I6 engines it seems always got 3.73 gears to help it with the lower power it produces.

Women dig dents and flat paint!
coloradok5.com/gallery/Grim
75 Jimmy, Dollar
Grim-Reaper
 
Yeah i was running 35x12.50's on 3.08 gears and a really worn 305.. needless to say it really sucked.. now that i have 4.56 its great and plus... i might get a rebuild that will net alot more Hp... cant wait

6in 87' K5 w/ 35" BFG muds.
305/Sm465/ NP208
Kn, 4.56's.
In desperate need of a rebuild.
Next- Eaton mech locker... Flows.
 
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