68 longbed 5.3/4l60e

[Daaaanz67]

That's awesome funny thing I mounted my computer in the same spot. Sorry just remembered I was going to post pictures of my air box mounting but forgot looks like you got it handled.
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[tallic68]

Actually I haven't mounted it yet. I got the stock mounting plate and its on the box but haven't mounted it yet. I'd love to see your mount though.

Also what did you use for the junction box there on the drivers fender. What is it, I'm guessing its some sort of fused box how many amps it it and where did you get it.

Thanks
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[Daaaanz67]

On the fender I used 80 amp circuit breaker, I like it better then the maxi fuses. My positive cable that comes off the battery goes into the breaker. Out of the breaker hot wire for the current performance fuse box and also the main red wire that feeds truck fuse box. It protects the whole entire truck. Also could be used for security just by pressing the disconnect button will kill the whole truck. I used 80 cause I run dual camaro fans. My brand says stinger used by stereo shops. I've also seen these at Kragen oriley auto they carry larger and smaller amperage if your not running fans. I need to down load photos for my air box mounting then I'll post them for you. I can get a better picture of that breaker if you want to see the front.
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[tallic68]

That would be great.

The fans are run through the current harness. I'm only useing the junction box for the truck supply only. I just put a 30 amp fuse between the pos battery cable and the junction box.
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[Daaaanz67]

Ok here we go I hope I can explain this wright. First thing I did was removed the large nub looking thing that's suppose to press into a grommet. When you do that it will leave a hole. You will use this hole to put a bolt through and drill a hole through the fender well. This hole will have a small foot on the bottom of the box. In the picture I made a wedge out of a piece of one inch rectangular steel. Without this wedge you will see a gap between the foot of the box and the curvature of the fender well. The wedge is flat against the bottom of the foot and cut with a chop saw approximately fifteen degrees to make up for the curvature. I also used a piece of industrial Velcro under the wedge to give it something to bite to and prevent a rattle.
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[hilljob26]

looks nice...i hope mine goes well

[Daaaanz67]

In the next picture I went to lowes and purchase a piece of solid aluminum round rod. I think it was 3/8 or 7/16 . Make sure when you mount the box that it is close enough to the radiator support that when you look through the hole on the side mount of the box which faces the radiator support you can see a flat spot on the fender well where it bolts to the radiator support. The aluminum rod will act as a stand/leg. Drill and thread one end of the rod first and mount to the box with small hex bolt. You will want to just place the box on the fenderwell then take a measurement for the leg cut to length. You might have to take leg off several times to cut to proper length take your time as not to end up cutting to short and have to buy new one. Once leg is proper length drill and tap bottom of rod. Drill hole where it touches fender well and run small hex bolt from underside of fenderwell into rod. Now drill the big hole for where that steel wedge and leg mounts. Oh yeah don't mind that water bottle over flow taped to the leg in the picture that's temporary.
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[Daaaanz67]

The wedge from another angle
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[Daaaanz67]

Next photo show the bolt that is ran through the box/fender well. I used a bushing that was large enough to accomodate the bolt and ground to angle of fender well. When completed the box will have a little flex but works well. No welding. This is pretty strait forward once you start not as hard as it sounds. Just my idea
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[mrhurt73]

i might have missed this somewhere but what was the part no for the fuel pump you used?

[tallic68]

mrhurt73
Re: 68 longbed 5.3/4l60e
i might have missed this somewhere but what was the part no for the fuel pump you used?

Summit
VPN-gsl392 walboro 255 lpr
Rus-760470 an-6 x 10mmx1.0 adapter


Also the pic of all the parts I got from summit has most of the part numbers visible.
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[mrhurt73]

got it thanks

[tallic68]

Thanks daaaaaanz67

Waiting for exhaust I was able to mount the air box up. I post up pix when I get my truck back.
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[Daaaanz67]

Glad you found a way to mount the box and save your money.
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[Daaaanz67]

Here's the 80amp breaker
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[68chvy]

What motor mounts did you use? And what manifolds did u end up usidg?? And how bout oil pan? No clearance issues?
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[tallic68]

5.3 from a 02 silverado trailblazer ss manifold. No clearance issues at all
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[68chvy]

Originally Posted by tallic68

5.3 from a 02 silverado trailblazer ss manifold. No clearance issues at all
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Did u use adapter plates? I'm about to drop an 04 5.3 in my 68 and trying to order right mounts or plates.. Thanks I am also running 4l60
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[tallic68]

If you go back and read the build threads I posted it all should be in there I think. If not I used dirty dingo mounts for 73-87 p-up. The perches and clam shell motor mounts are from a junk yard 85 SB Chevy p-up
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[tallic68]

Well it's been a while and I've made some good progress and have come up with some questions.







I've been looking into the bcm route and looks somewhat straight forward as long as you have the pinouts. Is there any benefit to connecting the serial data and class 2 data between the pcm and bcm or can you? Also how do you get the warning chimes if there is no conection from bcm to stereo leads. None that I see anyway.

Also I'm confused. Everything that I have read says that a 2002 truck motor dose not have electric fans and is dbc. My truck motor did not dave a mechanical fan and is dbw. Current performance did the harness and pcm. They left me an a/c request and wired in the e fans and the A/C clutch it wired into the main engine harness.

I'm getting ready to order an a/c system this weekend and I've read a lot about weather or not to use pcm to control fans and clutch or not. But none of the threads so far are close to my situation I think. So sorry if I'm beatting a dead horse with my questions.

If I went with trinary switch how do I control fans if they are already controlled by the pcm. How would I incorporate the trinary? By putting it in line
, supply- trinary - a/c request lead.

Can the oil pressure lead from the pcm be used for an oil pressure gauge? It was one of the leads Current perf left in for me.

[ls1nova71]

Wow, is that the same truck that was in the first post of this thread? Looks nice.

As for the BCM, what are you wanting to use it for? It is fairly straight forward, but you'll need more than just pin outs, you'll need several wiring diagrams. Also if you want to run the automatic headlights, you'll need a 99-02 switch. Also use a 99-02 BCM,, since they will have the retained accessory power that you can't use on the 03-up models. The older BCM's have the chime module built into them so that's why you don't see any stereo speaker hook ups. The serial data line doesn't need to be hooked up unless you're wanting to use the BCM for features that rely on a signal from the VSS such as the 'turn signal left on too long' chime or the 'driving with park brake applied' chime. It's also worth noting, that where you put the BCM will determine if you can even hear it while driving. I have mine directly under the top of the dash behind the instrument cluster, and driving with the A/c on and the stereo on, its kind of hard to hear. Turn the radio down and A/C on low and its still not as loud as it is in a new truck. With the engine off its really noticeable, so the headlight chime works great, but with automatic headlights, its kind of a moot point since I never turn the switch on manually.

On the A/C, if your PCM is tuned for an '02, all you'll need is the high and low pressure switches. You would hook the wire that goes to the clutch to the AC request wire. I'm not sure on the fans, but would think if the PCM is set up for electric fans' then they should come on when the AC request wire is hot. No '02 truck originally came with electric fans, so Current has just enabled them in the tune.

Oil pressure sender depends on what gauges you're running as to whether or not it will work. Your generally better off using the sender specifically designed for what ever gauge you use.
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[tallic68]

Been real busy the past year.
QA1 full suspension
Five lug conversion
Rims tires
Brake lines master hydro boost
Az performance big brake front and rear.
Altman ez latch
All new steering and ew quick ratio box
Chassis saver the frame
Spal 12” fans
16 pass trans cooler
1 piece drive shaft
3” stainless exhaust
Dakota digital hdx
Dakota digital retained accessory power
American auto wire classic update kit
Reworked engine harness moving it down the pass head
Moved computer to under pass seat
Puddle lights in bottom of both doors
New tail gat with latch retro fit
Amazon coil cove/ valve covers w emblems from a 63 impala
1 7/8 speed engineering stainless headers
Move battery to under bed
Dirty dingo trans crossmember.
Lockar trans linkage
Power master hi output alternator

[tallic68]

Couple more

[clay68c10]

Wow, you have been busy! It looks great.
I see a future driver in there.