5.3L Vortec V8 Conversion

[offroadman83]

Please do............I am going to be buying peace by piece to swap a 5.3 or maybe a 6.0 into My jeep. I have decided it is necessary haha-----------Kyle

 

[Johnnie Walker]

Knowing the capability and potention of the LQ truck motors, especially with an LS-style intake/acc. It is definitely worth it doing. I will be doing it soon when I find something else to DD. Most likely a LQ4/6.0L truck motor and a 4l65-E.

 

[Frank Z]

Hooker 2312 block hugger headers will not work with the Novak motor mounts....damnit.

Looks like Novak has me by the short hairs.....

 

[Frank Z]

Uncoated headers on order, should be here Monday or Tuesday.

 

[John D]

Uncoated headers on order, should be here Monday or Tuesday.

Did you use Novak's radiator?

 

[John D]

Hooker 2312 block hugger headers will not work with the Novak motor mounts....damnit.

Looks like Novak has me by the short hairs.....

Wonder if they designed specifically so only their headers will fit with their motor mounts...

 

[Frank Z]

No, I'm using a 3 row that I already have. I'll be running dual electric fans controlled by the PCM to come at different temperatures.

 

[John D]

Something you had made? What about the inlet outlet? I ended up using some copper tube and a bunch of pieces of hose I found in the salvage yard to make the stock radiator work. It works well, doesn't look pretty. I really like the Novak radiator, but its hard to justify that kind of dough...

 

[Frank Z]

No, I bought it from a local radiator shop off the shelf. I installed it when I built my 4.6L.

The plumbing will be somewhat similiar to yours. I got all of the hose with my 5.3L and will use them and some gum/bailing wire.

 

[jeepboy381]

Nevermind, someone said the 2312's won't work with the Novak mounts. We use 2312's on all our LS conversions but we use a different weld on style mount so we can lower the engine to clear the hood and keep everything at the proper angle.

 

[Frank Z]

Already been covered, they don't fit.

 

[pato castro]

Novak's radiator actually is a Griffin radiator:

http://www.polyperformance.com/show...es/D/5-591LB-BAX-400.jpg&tmbn_alt=5-591LB-BAX

I'm almost 100% sure that's the one:

http://img705.imageshack.us/img705/6434/dsc01693c.jpg

 

[Lightfoot]

sweet project. that thing is going to haul. Ive had more than one rice burner ask ask me what Ive got under the hood of my 2wd 2500 5spd. They dont believe me when I say its a stock 5.3. The thing straight up spanks for a stock truck. good luck, cant wait to see it finished.

 

[John D]

Novak's radiator actually is a Griffin radiator:

http://www.polyperformance.com/show...es/D/5-591LB-BAX-400.jpg&tmbn_alt=5-591LB-BAX

I'm almost 100% sure that's the one:

http://img705.imageshack.us/img705/6434/dsc01693c.jpg

$564 at Novak
$645 at Poly Performance

 

[offroadman83]

Uncoated headers on order, should be here Monday or Tuesday.

If you don't mind how much did you end up paying? You can pm me if you want. Thanks-------------Kyle

 

[Frank Z]

The prices are on the Novak site, $369 delivered (OUCH!)

 

[Frank Z]

Got the headers on Thursday evening. They are made by Sanderson Headers. I've looked on the Sanderson website and cannot find an exact match.

I'll be painting them in a day or two and then I'll get 'em bolted in so I can start fabbing up the rest of the exhaust.

Yes I'm going to run all 4 O2 sensors for proper fuel management in the closed loop mode.

 

[Johnnie Walker]

The prices are on the Novak site, $369 delivered (OUCH!)

Got the headers on Thursday evening. They are made by Sanderson Headers. I've looked on the Sanderson website and cannot find an exact match.


I'll be painting them in a day or two and then I'll get 'em bolted in so I can start fabbing up the rest of the exhaust.

Yes I'm going to run all 4 O2 sensors for proper fuel management in the closed loop mode.

Probably cannot find them, cuz they are a custom made header. Not a bad price for some headers that will work in a cherokee, but its not good either.

 

[John D]

Got the headers on Thursday evening. They are made by Sanderson Headers. I've looked on the Sanderson website and cannot find an exact match.

These do look a lot differrent than the Hooker headers I used. Even with paying extra for the headers, I still think this is money well spent being able to use Novak's mounts. Remember I spent a month on my mounts...

Yes I'm going to run all 4 O2 sensors for proper fuel management in the closed loop mode.

Consider this, the donor vehicle was configured so that each side of the exhaust came out of the manifold, passed an O2 sensor, through a cat, and passed another O2 sensor, then it combines with the other side through a "Y". Are you going to run two cats? If you are running only one you would want to configure the system using only one downstream O2 sensor. I originally designed mine with four O2 sensors and one cat, I was thinking better fuel mgmt also. Then one day I started to wonder how the downstream O2 sensors are going to make the proper adjustments if they don't know what side is rich/lean? So now I am thinking to get the best performance/fuel mgmt, I need to have a three O2 sensor system (two upstream, one downstream). I do not have the brain to program one downstream sensor out and have the computer look for only the other one, but I am told by programmers that this is easy for them to do. I think if you are not going to take the time to do a three sensor system, you might as well just do a two sensor system. Now, if you are going to run two cats, forget everything I said.

 

[Frank Z]

3 vs. 4.......Hmmm, I'll have to think about that. Sounds like it could work.

I'd rather not install another cat, I'm already running out of room.