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CK5
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1991 v3500 - big dumb lifted forever truck
- Thread starter obijuank5
- Start date
Any current updates, or are you going to find another project?
Man I’ve just been driving it. I’m at 112k now and it’s been a fun daily driver. First drive in summer of 2022 at 93k ish.
Haven’t done anything to it. I almost don’t know what to do with myself.
I think the only thing I’d change, and I go back and forth on this every day, is I should have kept 4.10s.
Haven’t done anything to it. I almost don’t know what to do with myself.
I think the only thing I’d change, and I go back and forth on this every day, is I should have kept 4.10s.
What did you change to, 4.56 or 4.88?
3.73 which is a perfect match in almost all scenarios except for where I am in 6th and 60 on some light hills. Happens every day for about 5 miles. 5th is screaming, and 6th is luggin. I can sail at 75 and still get 17mpg though.
As is it pulls excellent and has great EGT numbers. Feel like a Toyota guy always wanting a little lower gear.
As is it pulls excellent and has great EGT numbers. Feel like a Toyota guy always wanting a little lower gear.
Then you need more tq.
Whites better than 1000 ft/lb?
You guessed it. 1200.
You guessed it. 1200.
I keep forgetting, what size tire?
I am doing a similar build and I want to make sure I get the right gearing.
I only have an nv4500 though, so no deep overdrive
Or get a splitter, or a 2 speed rear axle
315/75r16s and a late model g56 which is super close to the nv4500 od ratio.
I can tire down a size or regear. Both cost about the same.
I can tire down a size or regear. Both cost about the same.
Is the 6th gear lugging pulling a load or empty?
My Dodge has a g56, 3.73’s and 35’s, it’s not winning any races in 6th but the only time I’ve felt like I could use more power is when I’m pulling the Blazer (~9k lbs).
My Dodge has a g56, 3.73’s and 35’s, it’s not winning any races in 6th but the only time I’ve felt like I could use more power is when I’m pulling the Blazer (~9k lbs).
Well you shouldn't be pulling in 6th anyway. I call it a good combo then
Yeah that is about 35" tire, the same as my 255/85/17 I will be running.
I was thinking of 3.73 but I also have a 4.10
Your g56 is the lower .79 ratio trans that only the 5.9 g56 trucks had. It pulls great in 6th.
I don’t lug the truck especially when loaded. It’s just a strange little situation that wouldn’t happen if everyone on the road would just FKN GOOOOOOO.
I figured they were all the same, what do you have?
My dodge has the same trans as you, and the k30 has the later version with the higher .73 of ratio. Both trucks have 3.73 and 35s.
Man when a 12 valve has an extra rattle you know that’s bad.
Excessive oil consumption caused by stock valve seals coming off.
Not looking forward to fixing this.
Excessive oil consumption caused by stock valve seals coming off.
Not looking forward to fixing this.
Just pressurize the cylinder through the spark plug hole....
On a more serious note, can you pressurize the cylinder through a glow plug hole or an injector hole? There has to be a way to fix that without pulling the head. Or last resort just putting the piston at TDC for each cylinder?
On a more serious note, can you pressurize the cylinder through a glow plug hole or an injector hole? There has to be a way to fix that without pulling the head. Or last resort just putting the piston at TDC for each cylinder?
That is exactly how you do it actually. I really don’t feel like pulling the injectors and fuel lines and making the tool to pressurize the cylinder but that’s the right way to do it.
I’m also not yet fully confident in myself doing this so it’s time to learn it in its entirety apparently. I had real good help when it was first done.
I’m also not yet fully confident in myself doing this so it’s time to learn it in its entirety apparently. I had real good help when it was first done.
I hadn't done it on a 12v but I have on a 24v. Put the piston at TDC and the valve will just slightly drop and you can get to it and do what you need to do. Double check me on that as it's been 15yrs since I've done this.
