rear end options in 67

[67chevemall]

Just wondering what rear end ratio's where availible for the 1/2 tonn 67 with the 6 and three on the tree???

I want to replace mine but want the gears to fit the rear end!

1 post said the 3:07, 3:73?

Any one?

[Super Chevy]

3.73 4 series 12 bolt on half ton six cyl.

[67chevemall]

So they all had 3:73's
What about the 8cyl.>??

What are the options to change from 3:73 to a lower gear? Without removeing the rear end?


Cheers

[lukecp]

327 powered truck usually had 3.07 gears unless optioned otherwise. 283 and 6-cylinder trucks usually had 3.73. The only way to know for sure is to pop the cover, and the number of teeth will be stamped on the ring gear. 41-11 is 3.73, 43-14 is 3.07.

You can get your current rearend rebuilt, and i reccomend this if you can afford it. When you get a junkyard rear you chance that it will be worn out and have a limited lifespan. I learned this over Christmas when i put a used rear in my truck and it turned out to be junk. Although, a 12-bolt is a tough rear and i am sure it is possible to find a good one. Swapping rears is an easy job, even for a beginner. You can get it done in a day or two no problem for the first time.

Anyway, he parts (ring and pinion plus install kit) run around $275 for decent pieces. Now, the labor is what gets you. Rebuilding rearend is somewhat of a specialtly, and not many shops do it. So it may be hard to find someone who will do it for you.

[Bryan68custom]

My truck is off one year but it came from the factory with 4.11s and an overdrive 3 speed powered by a 250

[Hutch]

67chevemall
HERE are the codes for 1967 Chevy Truck 1/2 ton rears:
Series Code Ratio
1/2-Ton HA 3.73:1
1/2-Ton HB 3.07:1
1/2-Ton HC 3.73:1
1/2-Ton HD 4.11:1
1/2-Ton JQ 4.11:1
1/2-Ton MD 3.73:1

[67chevemall]

Thanks guys this is great! Where would you guys buy 3:07 ring and pinion gears plus the install kit??

Is there any "do it yourself " web sites for rebuilding rear ends??

[70short/step]

To change yours from a 3:73 to a 3:07 is more involved than just changing ring and pinion. The carrier that the ring gear bolts to has to be changed also. There is seris 3 carriers that fit gear ratios 3:50 and lower ie: 3:42, 3:07 and seris 4 carriers that fit 3:73 and higher ie: 4:11, 4:56. Good luck 70short/step

[67chevemall]

carriers eh?

I'll have to look into these animals!

Any web sites?

[MOTHERTRUCKERS]

Randy's ring and pinion has the parts you need www.ringpinion.com or call 1 888 296 3129. you will also need a 3 series carrier for 3.07 gears, 3.73 are a 4 series carrier. I have good used and magnifluxed 3 and 4 series in stock if interested. In any case have the rearend shop check your axles for bearing and spline wear and install new bearings and seals in axles and pinion. Rearend shops here get in the ballpark 150.00 to 250.00 for the setup, a non posi rebuild with all new parts around 7-800.00, posi around a grand.