69 K5 LS 6.0 [Deleted]

[skunked]

Just measured for a new Aluminum radiator with fans because I’m not sure I like the fit of the 06 Silverado SS one that I have. After measuring it up, I pulled out the radiator from a ‘70 big block El Camino & it fits perfectly after relocating the bottom mounts 1/2” toward the engine.
Now I’m thinking I should just go with that.
Does anyone have a reason not to use it with the 6.0 LQ9? or just spend the $600 plus for the cooler Aluminum one?

if you’re looking for a cheaper aluminum option with fans you might want to checkout @SpeedlabDan first gen thread. I’m also using the same brand (different model) on my K10 with a BBC. I paid $265 to my door for the radiator & fan combo.

First Gen, all hardware no software

If the thermostat isn't open, there shouldn't be water flow in the upper hose to build pressure in that hose over what the system pressure is. Would you explain your theory a bit more? If the cap held too much pressure, then the weakest point becomes a failure potential. And an old radiator...

ck5.com

 

[bp71k5]

Just measured for a new Aluminum radiator with fans because I’m not sure I like the fit of the 06 Silverado SS one that I have. After measuring it up, I pulled out the radiator from a ‘70 big block El Camino & it fits perfectly after relocating the bottom mounts 1/2” toward the engine.
Now I’m thinking I should just go with that.
Does anyone have a reason not to use it with the 6.0 LQ9? or just spend the $600 plus for the cooler Aluminum one?

I’d use the old over the new aluminum ones if the hoses can be worked out.

 

[19Tim69]

I’d use the old over the new aluminum ones if the hoses can be worked out.

At least there are no issues with fitting the old one & I can save some cash for tires that way.
I’m leaning that direction

 

[bp71k5]

At least there are no issues with fitting the old one & I can save some cash for tires that way.
I’m leaning that direction

dont the LS motors have the hoses on the wrong side?

 

[19Tim69]

dont the LS motors have the hoses on the wrong side?

Kinda...but the stock radiator has the same route

 

[6872xtc]

I would use the factory one to start and see how it works. But first, check the inlet and outlet sizes to see what it will take to connect to them. Those look close in the picture. I will tell you that your old one isn't an original for a '69 because it doesn't have the lower neck with a upward bend in it. And it looks too small for original, however this should be a benefit for the swap, as long as you can avoid having the lower hose get a kink in it from having the inner fender holding it up some.

 

[19Tim69]

I would use the factory one to start and see how it works. But first, check the inlet and outlet sizes to see what it will take to connect to them. Those look close in the picture. I will tell you that your old one isn't an original for a '69 because it doesn't have the lower neck with a upward bend in it. And it looks too small for original, however this should be a benefit for the swap, as long as you can avoid having the lower hose get a kink in it from having the inner fender holding it up some.

I have read that the original 2006 hoses will work after modifying them by cutting them down...I had a left over 70 El Camino big block radiator...I tried it out in my Blazer & it fit perfectly...when I got my 69, the radiator wasn’t in it. Thanks for your input, it’s greatly appreciated. I think I will try to use what I have as you & bp71k5 suggest, if it doesn’t work out I can always check out other options.

 

[19Tim69]

Cleaned & primed a couple wheels yesterday

 

[19Tim69]

Started on the driver’s door... no bondo & very little work needed

 

[19Tim69]

I saw a 72 longhorn Cheyenne big block for sale today...I’m thinking about driving over to get a better look at it.

 

[19Tim69]

So I’ve been kicking around the idea of using a 241C with my NP205 for a doubler. Does anyone know where to get what I need to get it done? Not like I need more to do on my rig but reading through NorCal69’s build & I’m back to wanting to do the doubler.

 

[skunked]

ORD and Northwest Fab make planetary reduction boxes.

 

[19Tim69]

ORD and Northwest Fab make planetary reduction boxes.

For the 241? I guess I thought both only did NP203 reduction boxes. Thanks, I’ll contact ORD

 

[skunked]

For the 241? I guess I thought both only did NP203 reduction boxes. Thanks, I’ll contact ORD

Offroad Design Magnum Underdrive

The new Offroad Design Magnum Box is our super compact 4 speed transfer case system featuring our "fat shaft" technology that truly equips you to use any of the available ranges without fear of breaking the intermediate shaft. The Magnum Box retains the 1:1 and 1.96:1 ratio that an NP205 has...

www.offroaddesign.com

 

[19Tim69]

My 205 is a figure 8 pattern, looks like the 6 bolt circle pattern is needed for the Magnum

 

[skunked]

My 205 is a figure 8 pattern, looks like the 6 bolt circle pattern is needed for the Magnum

I’m not sure offhand. I run the NWF eco box with a figure 8 205. Here’s the titan box by NWF

Blackbox-I

Current BlackBox Build Time is 12 Weeks Dubbed ‘i’ for integrated, the BlackBox-i is the second evolution of the underdrive series. Designed to be as short and compact as possible, the BackBox-i was specifically developed for short wheelbase vehicles; jeeps, early broncos, and rock buggies. To...

www.northwestfab.com

 

[Fastereddie]

My 205 is a figure 8 pattern, looks like the 6 bolt circle pattern is needed for the Magnum

That’s not true. I have a Magnum on my fig8 205

 

[skunked]

That’s not true. I have a Magnum on my fig8 205

I figured they had to offer a figure 8 option because it’s more common but I don’t see it on that webpage.

 

[19Tim69]

That’s not true. I have a Magnum on my fig8 205

I was looking ORD’s site, I didn’t talk to anyone yet, just reading the description

 

[19Tim69]

Just experimenting...