Re: My winter project
 

Lift and springs are in, checking it before I tighten it down. I don't want to be going down the road half sideways.

Re: My winter project
 

Awesome! 35's or 33's?

Re: My winter project
 

35" and plan to get new BFG in the same size. I have the diff covers off changing gear oil and both looks to be 72. Is 14:43=3.73? the old cover off and now stock look.

7D2N

Re: My winter project
 

Your gears look really nice compared to mine when I opened the diffs for the first time.

I read here on the forum somewhere... 43 is the ring gear tooth count and 14 is the pinion gear tooth count.

Same post divided the 43 by 14 and stated the gear ratio to be 3.07. Not sure if that is correct or not. I googled it and came up with it being a 3.08 gear marking, well at least according to a fella on another site.

There was something else I read on here that the type of transmission, (manual or auto) - determines your gear ratio.

I think someone will chime in shortly that has the answer. ;)

Have a merry Christmas!!

Re: My winter project
 

I forgot about this tab that was on my rear end.
So, it looks like 3.07 gears.

Re: My winter project
 

35" tires and 3.07:1 gears will make for very sluggish acceleration and power. You may have to consider changing out differential gear sets in the future to something like 3.73 or 4.11. I had 32" on my 350/350 Blazer with the stock 3.07's and it was a dog.

Re: My winter project
 

I have the 350 cu.in. motor and th350 auto trans. Is the 3.07 ratio ok for hyw 60/70mph?
Thank you guys
7D2N

Re: My winter project
 

I think you will be good on the hwy with the th350, 35's and 3.07's. Probably a bit of a dog around town... but if you are just cruising... who cares?

This has been my experience. I had a 79 k10 swb in college with a 383 built with torque in mind, maybe 350 hp on a good day. I ran this motor with a th350, np205 and a 10 bolt that had 3.07 gears. It had a 4" lift with 33's.

It was not a dog around town, but slower than I liked, between 30 to 50 mph it was quick... IMO. On the hwy, at 70/75 it felt like it had good power and I could get up to 80/85 without much trouble. It had nothing past 85.

That truck liked to cruise at 65, it felt like a small push to get up to 70/75 and maintain. I don't think those tires measured out much past 31/32" even though they were 33's. Thinking about it, if you are looking for nice hwy cruising you might be set up perfectly with the th350 and 35's.

I also had a 74 blazer in high school that had 33" tires that actually measured out to 33 inches... with 4.11 gears and an old dog of a 350. It liked 55, and did not like 65. Based upon that rig I am going with 35s and 4.11 gears because I will be driving around town most of the time, 45mph at the most. If I was going to drive on the hwy a lot I would go with 3.73 OR 3.55's.

I would not stress about the 3.07's, change them when it makes sense to do so. Or keep an eye out for a 3/4 ton set up for cheap. Those normally have 3.73 or 4.11.

Re: My winter project
 

I had some time to work on the front hubs and because someone thought big screwdrivers may remove the spindle nuts. I ended up getting a spindle nut kit and now good to go.

Re: My winter project
 

I had some time when the super game was on so... the motor needed to come out and now I'm not sure of the next steps for trans and transfer case removal, they need some cleaning but I could use some guidance of the next move to get them out.

Thanks
7D2N

Re: My winter project
 

Are you wanting to drop it as a complete unit or in two pieces? I have had good luck dropping it all as one unit. I like to have a helper when doing it. If you have access to a motorcycle lift/jack or tranny jack it is way easier.

Re: My winter project
 

Now that I have scraped the grease and junk I think I know which way to go. I thought I may have to remove the cross member.
thanks
7D2N

Re: My winter project
 

I have transmission and transfercase out of the way just need some cleaning up.
40 plus years of grease stuff I had to chisel some it away.

Re: My winter project
 

As SPF says use a trans jack, makes life much simpler when jacked up on the cross member and exhaust studs in trans for lining up, remove studs when done or leave them in for future removal of t/c and cross member removal.

Harbor freight is your friend

Re: My winter project
 

Do you know who makes that row bar? Door panel looks good all black. And last who makes that body mount kit.

Thanks
Jr.

Re: My winter project
 

jaros44, Thank you that will help a bunch when I start to put it back together.

Re: My winter project
 

Looking good! I remember cleaning all of the oil/mud mix off of my crossmember, what a mess... I don't miss that.

What is the plan? Rebuild or doing something different?

Re: My winter project
 

Jr.
I looked for suppliers or manufacturers that sold this type of roll bar and I did not have any luck, this is the second one I've had and both were bought used. The body mount kit is from energy suspension and pleased how it went in, oh and thanks on the door panels I think I will go with black and trim no wood grain.

Re: My winter project
 

Yeah no fun for sure they don't show that part on the TV shows. As far as rebuild I'm not real sure yet after watching what you are doing, trying to stay mostly stock for cruising and such. I have learned after going this far though the Blazer seems to be assembled or on the line first part of May of 1972.

Re: My winter project
 

Indeed, the TV shows always seem to miss that part. I look forward to seeing what direction you take!

Re: My winter project
 

Cleaning up the heavy things. I picked up energy suspension trans case mounts and need to get seals for the trans and and case.

Re: My winter project
 

Thanks for the great post, I am just starting my 71 blazer.

Re: My winter project
 

Jr. post some pictures I would like to see your blazer, starting is the best part and the things I have learned here has helped me a ton. Many people willing to share knowledge.

Thanks
7D2N

Re: My winter project
 

I found out that truck bed liner will come off the the hatch with a little heat, prying and pulling but fairly easy to remove. I was also surprised the hatch was in pretty good shape.

Re: My winter project
 

WOW that's crazy

Re: My winter project
 

Your project is really coming along and looks great. Keep up the good work,

Re: My winter project
 

Thanks maldo, its slower than I would like but I'm having a great time figuring it out.
7D2N

Re: My winter project
 

Well after rolling around on my back scraping, grinding, and sanding the underside of the tub and frame it's time to paint. I used a roll-on satin black on the underside of the tub and can spray the frame. Trans and transfer case ready to go back in.

Re: My winter project
 

Painted under side of the tub and frame, for a driver truck what do you think white or black firewall?

Re: My winter project
 

Moving to engine stuff, looks pretty clean inside but a previous rebuild had the cam break in fail. Need to get to the machine shop.

Re: My winter project
 

If it's any help....

Re: My winter project
 

Yes it does thanks and very nice, any reason you didn't paint the under side of the hood white?

7D2N

Re: My winter project
 

Thank you, and glad it helped. No particular reason that I recall, but I think would look nice as well.

Re: My winter project
 

The engine went to the machine shop and had a few things done will have it this week. New home is ready.

Re: My winter project
 

Wow... you’ve made a lot of progress since I saw you last!

Re: My winter project
 

Looks good like the process.

Re: My winter project
 

So you decided on the white firewall; looks good!

Re: My winter project
 

Thanks guys, I know it's a yawning build and nothing like some of the members have done but I'll keep playing.

Re: My winter project
 

I have the engine back from the machine shop and will to start cleaning the outside stuff for some paint. I did stumble on this steering wheel and shiftier to replace the custom wheel and late model shiftier that I have now.

Re: My winter project
 

Starting to put these back where they go. I'll clean the outside engine for some paint and I'll be ready for the next move.