Author Topic: Lets see your 73-87 LS swap!  (Read 21357 times)

Offline MANCHU1-9IN

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Lets see your 73-87 LS swap!
« on: February 04, 2014, 12:47:22 PM »
To give this section a proverbial kick in the pants, lets see some pictures of what you are working on. Be it complete, incomplete or simply in the planning phase, lets see your pics and hear your plans.

1985 K10 Silverado

Engine:
LM7 5.3l
799 heads untouched
Isky cam 206/212 112+2.5
all supporting mods for cam
Headers to come eventually
BPAutomotive wire harness

Trans/T-case:
2003 4l80E stock
NP208 that needs input shaft swap and refresh

Fuel system:
original dual 16 gal tanks
87 sending units
AC EP381 in-tank pumps
87 switch for tanks
Pollak switching valve
SS braided -8AN feed lines
SS braided -6AN return
All Russell fittings/filters


I still have tons of work to do to get this truck rolling again, but I have had an absolute blast getting this far. Once I find an adapter for the 4l80 to NP208, (that isn't a million bucks) everything will be bolted up in its final resting place. I still have the wiring and fuel to conquer, but I plan to have it running before my first born gets here in June.

Please excuse the messy garage, I typically keep it much more clean and organized.
"Attitude at Altitude"

2007 Silverado NNBS RCSB 4.8 LT's - UDP's - CAI - P&P TB - Vette servo - BBP tune ~ embarrassingly slow

85 K10 RCSB - 5.3l/4L80 swap - 799 heads - PAC1218's - 206/212 .553/.561 112+2.5 - BP Automotive harness - Coming together..

Offline Captkaos

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Re: Lets see your 73-87 LS swap!
« Reply #1 on: February 04, 2014, 01:39:37 PM »
This is mine: http://forum.73-87chevytrucks.com/smforum/index.php?topic=12120

Plans are to get the new sending unit and 430lph pump in place and shoot for more power.  It is running out of fuel right now.  Swap in the new limited slip 3.42 rearend and finish up the interior.  Still driving it like it is though.




Offline MANCHU1-9IN

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Re: Lets see your 73-87 LS swap!
« Reply #2 on: February 04, 2014, 02:11:29 PM »
Those Impalla SS wheels look perfect on that truck. I have 2 Garrett turbos in my garage that have been collecting dust for several years, so I may have to copy your build one of these days lol
"Attitude at Altitude"

2007 Silverado NNBS RCSB 4.8 LT's - UDP's - CAI - P&P TB - Vette servo - BBP tune ~ embarrassingly slow

85 K10 RCSB - 5.3l/4L80 swap - 799 heads - PAC1218's - 206/212 .553/.561 112+2.5 - BP Automotive harness - Coming together..

Offline MANCHU1-9IN

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Re: Lets see your 73-87 LS swap!
« Reply #3 on: February 19, 2014, 12:36:38 PM »
Come on guys/gals I know we have more swaps. If you have a build thread and don't feel like typing everything up, a link to the thread is cool too.
"Attitude at Altitude"

2007 Silverado NNBS RCSB 4.8 LT's - UDP's - CAI - P&P TB - Vette servo - BBP tune ~ embarrassingly slow

85 K10 RCSB - 5.3l/4L80 swap - 799 heads - PAC1218's - 206/212 .553/.561 112+2.5 - BP Automotive harness - Coming together..

Offline frotosride

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Re: Lets see your 73-87 LS swap!
« Reply #4 on: February 19, 2014, 10:55:47 PM »
Those Impalla SS wheels look perfect on that truck. I have 2 Garrett turbos in my garage that have been collecting dust for several years, so I may have to copy your build one of these days lol

Or you can just send them to me and I promise to keep them warm!!  ;D
"Beat it like a red-headed ford"
1987 v10 Silverado, 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline Mtrhd329

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Re: Lets see your 73-87 LS swap!
« Reply #5 on: June 10, 2014, 04:59:10 PM »
Heres mine

79 c10
01 tahoe 5.3/4l60e
Z06 cam decked heads
Long tubes built tranny
Quicksilver shifter 2400 stall vertor

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Offline 1bad72

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Re: Lets see your 73-87 LS swap!
« Reply #6 on: June 10, 2014, 11:10:47 PM »
Right now the blocks going to be machined, the cab is on jack stands and the frame is bare and getting its "proper stance" 8)

Offline 79K10Crusher

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Re: Lets see your 73-87 LS swap!
« Reply #7 on: August 07, 2014, 02:12:10 PM »
Thinking of getting a LS3 525hp with 4L70E connect n cruise.  How much hp are you making capt.?


Offline Captkaos

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Re: Lets see your 73-87 LS swap!
« Reply #8 on: August 17, 2014, 01:44:21 PM »
I am making 450hp/500lb/ft at the rear tire on a pump that didn't feed enough fuel and 8lbs of boost.   Since then I have swapped to a bigger pump (255lph to 430) limited slip, 3.42 gears and upgraded the turbos.
I was going to cap it at 550hp, but who knows now...  It will be enough to allow the motor to live as it is stock, until I get the other motor built to handle more.

Offline Flyinhillbilly

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Re: Lets see your 73-87 LS swap!
« Reply #9 on: August 19, 2015, 06:06:58 PM »
This is mine: http://forum.73-87chevytrucks.com/smforum/index.php?topic=12120

Plans are to get the new sending unit and 430lph pump in place and shoot for more power.  It is running out of fuel right now.  Swap in the new limited slip 3.42 rearend and finish up the interior.  Still driving it like it is though.




I love this! What are the specs on the turbo's? Scavenge pump on each?

Once again, killer truck.
I was born on a mountian, raised in a cave,
Overpowered cars is all I crave.

Offline Captkaos

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Re: Lets see your 73-87 LS swap!
« Reply #10 on: August 20, 2015, 11:58:35 PM »
They are T3/T4 Hybrids were ball bearing now journal (don't ask) it was a .48AR with 54 trim, now it is a 60 trim, I believe.
I was so upset when the ball bearing setup bit the dust that I just took it to a buddy told him what I wanted and he built it for support to 490hp per
They were STS turbos but not it is just the turbine side...  It has 2 scavenge pumps on each of the framerails.



Offline Flyinhillbilly

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Re: Lets see your 73-87 LS swap!
« Reply #11 on: August 21, 2015, 11:31:13 AM »
They are T3/T4 Hybrids were ball bearing now journal (don't ask) it was a .48AR with 54 trim, now it is a 60 trim, I believe.
I was so upset when the ball bearing setup bit the dust that I just took it to a buddy told him what I wanted and he built it for support to 490hp per
They were STS turbos but not it is just the turbine side...  It has 2 scavenge pumps on each of the framerails.
I read your build thread last night, super cool project.
I was born on a mountian, raised in a cave,
Overpowered cars is all I crave.

Offline roundhouse

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Re: Lets see your 73-87 LS swap!
« Reply #12 on: August 22, 2015, 03:42:57 PM »

They are T3/T4 Hybrids were ball bearing now journal (don't ask) it was a .48AR with 54 trim, now it is a 60 trim, I believe.
I was so upset when the ball bearing setup bit the dust that I just took it to a buddy told him what I wanted and he built it for support to 490hp per
They were STS turbos but not it is just the turbine side...  It has 2 scavenge pumps on each of the framerails.
I read your build thread last night, super cool project.
me too

We are looking at replacing the tired 350 in my sons 77 K-10
With a good used engine and oddly enough the LS engines are cheaper than vortecs or normal old 350s

We can get a 5.3 with harness and computer , fan to starter , still in the truck so we can hear it run for $700
4.8s are $500 for everything

Only thing is the AC adapter mounting plates will be $250.  New AC comp $250
Motor mounts $200, new flywheel and clutch $250. Computer reflash $150


We swapped the SM 465 for a NV3500 out of s 2007 Silverado last year
Should a grabbed the 4.8 too but didn't think we'd need one so soon


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Offline frotosride

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Re: Lets see your 73-87 LS swap!
« Reply #13 on: August 22, 2015, 06:39:04 PM »

They are T3/T4 Hybrids were ball bearing now journal (don't ask) it was a .48AR with 54 trim, now it is a 60 trim, I believe.
I was

We are looking at replacing the tired 350 in my sons 77 K-10
With a good used engine and oddly enough the LS engines are cheaper than vortecs or normal old 350s

We can get a 5.3 with harness and computer , fan to starter , still in the truck so we can hear it run for $700
4.8s are $500 for everything

Only thing is the AC adapter mounting plates will be $250.  New AC comp $250
Motor mounts $200, new flywheel and clutch $250. Computer reflash $150


We swapped the SM 465 for a NV3500 out of s 2007 Silverado last year
Should a grabbed the 4.8 too but didn't think we'd need one so soon


Sent from my iPhone using Tapatalk
you can actually get the flash done for half the price from Brian at lt1swap.com.  roughly $75 and hat includes return shipping. He did mine and I got it back in 5days. Also the site walks you through modifying the harness which will save a lot of $$$
"Beat it like a red-headed ford"
1987 v10 Silverado, 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline roundhouse

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Lets see your 73-87 LS swap!
« Reply #14 on: August 22, 2015, 07:01:59 PM »

They are T3/T4 Hybrids were ball bearing now journal (don't ask) it was a .48AR with 54 trim, now it is a 60 trim, I believe.
I was

We are looking at replacing the tired 350 in my sons 77 K-10
With a good used engine and oddly enough the LS engines are cheaper than vortecs or normal old 350s

We can get a 5.3 with harness and computer , fan to starter , still in the truck so we can hear it run for $700
4.8s are $500 for everything

Only thing is the AC adapter mounting plates will be $250.  New AC comp $250
Motor mounts $200, new flywheel and clutch $250. Computer reflash $150


We swapped the SM 465 for a NV3500 out of s 2007 Silverado last year
Should a grabbed the 4.8 too but didn't think we'd need one so soon


Sent from my iPhone using Tapatalk
you can actually get the flash done for half the price from Brian at lt1swap.com.  roughly $75 and hat includes return shipping. He did mine and I got it back in 5days. Also the site walks you through modifying the harness which will save a lot of $$$
i did the harness when I swapped a 1990 mustang engine into my 74 Bronco and when I swapped TBI in the K-10

In the bronco I was in a hurry since it was my daily driver at the time and I didn't remove the extra wires
I just folded em up and taped em under the loom

On the TBI we removed the extra wires



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