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#26 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: 5.3 into 72
You realize that silicon pad is one of the things listed in your link?......
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING ![]() |
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#27 |
Registered User
Join Date: Oct 2013
Location: Alabama
Posts: 1,217
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Re: 5.3 into 72
Please go re-read my post. Pay close attention to the part where I say:
"Look for the "Vibration-Damping Sandwich Mounts" The trolling here by some is tiresome and borders on juvenile. |
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#28 |
Registered User
Join Date: Mar 2013
Location: Marquette michigan
Posts: 828
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Re: 5.3 into 72
When i did my 5.3 install 5 years ago i went with painless wiring and paid a little more for 5 additional feet. Drilled a 1" hole low in firewall above the hump. Once inside i laid down sticky ice and water guard (roofing product) then laid the wires flat and spread out and topped it with one more layer of ice and water guard. When it got under the seat i took it back to being round and swept it behind the driver and used the stock truck pcm mount and used small square tubing to make a framework. My diagnostic plug, added fuse/relay box and check engine light are behind the seat. Can't tell the wires are under the carpet.
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#29 |
Registered User
Join Date: Jun 2012
Location: Portland
Posts: 1,330
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Re: 5.3 into 72
Just my personal take, but I'm always hesitant to put critical wires in areas where they may be subject to impact. Under the carpet they're shielded, but overtime they'll still experience wear and tear, especially if they're spread out. My plan is to locate it either behind the dash somewhere, or to build a center console and locate the ECM inside of that in front of where a floor-shifter would go.
I would also avoid putting them on the underside of the cab, mainly because anything that COULD come in contact there (which would be unlikely) would be doing so at speed. I plan on using bulkhead connectors to go from the cab to the engine bay. Will require more planning in wiring, but should make for a cleaner install in the end. http://www.summitracing.com/parts/aww-500666 |
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#30 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
I received my showstopper harness from bill at bp automotive today. The harness came out beautiful. I got the harness ran from the cab into the engine compartment and hooked up to all the appropriate sensors. I still have the hard wiring to do and placing the ecm, tcm and fuse block. So far I am more than impressed with the harness. I will post pictures when I get the chance. Friday I hope to have the front end back on the truck and my hard wiring complete.
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#31 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
Got a few things going today. I got my fuse block and ecm in their places. I didn't have enough harness to get them exactly where I wanted, but it was close. They will both be under the seat. Changing fuses will be a pain, but when I laid them out it seemed to be the only feasible way. I also removed parts of the original harness not needed such as the voltage regulator. I put everything in wires looms. I'm trying to get everything as clean as possible. I can't afford to build a show truck but I'm working with what I have.
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#32 |
Registered User
![]() Join Date: Dec 2012
Location: Los Banos CA
Posts: 2,705
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Re: 5.3 into 72
First picture!!
"Hey dad when is my truck going to be ready????" ![]()
__________________
1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO ![]() |
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#33 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
He's my little helper
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#34 |
Registered User
![]() Join Date: Dec 2012
Location: Los Banos CA
Posts: 2,705
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Re: 5.3 into 72
Nice take all the pictures you can they grow up faster than you can imagine.
__________________
1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO ![]() |
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#35 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
Can anyone tell me how to setup the wiring to my brake switch? Iirc correctly the harness has a blue wire and a blue and white wire.
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#36 |
Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: 5.3 into 72
The stock switches are normally open until the brake is depressed and then the switch is closed sending 12VDC to the tail lights Via the steering column turn signals
__________________
53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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#37 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
I should clarify what I meant on the brake switch. I am referring to the bp harness hooking into my brake switch for the torque converter lockup. There are two wires in the bp harness.
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#38 |
Registered User
![]() Join Date: Jul 2012
Location: Baton Rouge, LA
Posts: 385
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Re: 5.3 into 72
Nice work. Looks Good.
__________________
Ryan... 1972 C10 Stepside With 2014 Camaro 6.2L/6l80e drivetrain http://67-72chevytrucks.com/vboard/s...11#post5532411 |
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#39 | |
Registered User
![]() Join Date: Sep 2014
Location: Milwaukie, OR
Posts: 223
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Re: 5.3 into 72
Quote:
I just bought one from Amazon and put it in, its an ACDelco D862C, it worked great with the BP harness. Rich |
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#40 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
Thanks, got the part in order now. The radiator will be in Tuesday. Hopefully I can have it up by the end of next week.
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#41 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
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#42 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 5.3 into 72
Are the wires labeled? On a Gen4 engine, its usually one wire and is tapped into the wire on the brake switch that is hot when the brake pedal is depresses, the opposite of the older Gen 3 engines that use the dual contact switch.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#43 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
Finally got her running today! Still have to rap up the permanent fuel pump wiring, mounting the electric fans, routing the headlight wiring, mounting the bed and doing the fuel fill. I'd like to get the exhaust done this weekend.
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#44 |
Senior Member
![]() Join Date: May 2014
Location: Vancouver, BC
Posts: 544
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Re: 5.3 into 72
Congrats..!!
__________________
Kitsbeach (Ken) 1967 C10 LWB (now SWB) Fleetside 6cyl Saginaw three-on-the-tree "No Frills" 1980 C20 Long to short & static drop "Square One" |
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#45 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
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#46 |
Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: 5.3 into 72
There was a little nub there for a vacuum nose, I used it for my A/C vacuum attachment on my 78.
If you do not need a sorce for vacuum why can't you just plug it, maybe a screw with silicone on it
__________________
53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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#47 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,634
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Re: 5.3 into 72
Jess here is what mine looks like..its blocked from factory with that plastic stirrup thingy..like said before you might could tap it and put in a plug or barb fitting..but that plug don't look like it comes out but I don't know about that.
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#48 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
Thanks guys. I think I'll attempt to plug it today and see what happens. When I covered it yesterday it created a whistle. It could've been leaking a small amount of air to cause that though. We shall see
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#49 |
Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: 5.3 into 72
You could always place a vacuum gauge on that fitting
__________________
53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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#50 |
Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 958
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Re: 5.3 into 72
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