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#1 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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LT1 GenV swap
After being away from the forum for almost a whole year, Ive made my way back! With my current 2003 5.3/4l60e swap going on 6+ years the transmission starting to slip, I decided instead of a rebuild, swap in something new. 2015 powertrain new. Cant beat 380 hp ish with E85 and 6 speeds of fun. Ive already done one of the LT1 GenV swaps for a friend I work with, aboesec10. The engine and trans if all goes well should be here in about a week or 2. I still need to wrap up one other project before I take my double D down.
Ill take pictures and all that mumbo jumbo as progress is made. Just like the other LT1 swap, I will be using the factory fuel pump, fuel pump module, fuel pump pressure sensor, factory accelerator pedal, factory harness modified to standalone. I will add the E85 composition sensor to run the e85. Fuel lines will be braided capable of e85 Exhaust - not sure if the factory manifolds will work - no worries if not as I have a setup for header fabrication and icengineworks header modeling kit for a set of headers that will fit with clearance to spare. Main difference in the L83.. power steering problem. I am not satisfied with the current aftermarket bracket solutions. I am going to design my own mounts to use a power steering pump on the driver side, and the alternator in the factory L83 location (passenger side). I picked up a hydrolocked 5.3 and 6l80 drivetrain pullout for mockup up from craigslist for cheap and for spare parts. I already have the cylinder head bolt holes mapped in cad so all that's left is to start mocking things up. As far as cluster... only option is likely aftermarket or modify the factory cluster somehow. The e92 pcm doesn't have a vss or tach output so no option to use factory gauges except the fuel and volt gauge. Oil pressure can be used if adding aftermarket sensor. No coolant temp in the cylinder head on the L83 heads ![]() As far as cooling the engine, i plan to use the Silverado fan assemblies somehow. A/C - factory compressor - w/o ecu control for the time being - goal is to have a module made or retrofit the factory module to send the proper a/c request signal so the idle is increased and all that stuff. I still have all of my wiring notes, pinouts etc so wiring isn't going to be a issue. Once the motor arrives, I'll update with pictures, Clint
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1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#2 |
Registered User
Join Date: Apr 2014
Location: Azle,Texas
Posts: 2,248
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Re: LT1 GenV swap
Awesome Clint... we will be doing basically the same setup. Ive been sitting on a 2014 L83 and your buddy Aboesco10 has been getting me fired up about it. Ive made some pretty good progress on the teardown and getting stuff ordered as soon as I know im gonna need it. Really looking forward to you build.
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#3 |
Registered User
Join Date: Nov 2013
Location: Las Vegas, Nevada
Posts: 376
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Re: LT1 GenV swap
Subscribed. I'll be keeping an eye on this one.
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#4 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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Re: LT1 GenV swap
Mail man dropped off the pallet of goods. Once I finish the exhaust on my BME 525 LS swap and box in the battery area I'll be starting this swap. So no updates till then. Going to order some motor mount adapters and the dirty dingo water pump adapters to use the gen4 water pumps.
clint
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#5 | |
Registered User
Join Date: Jul 2013
Location: Rockwell, NC
Posts: 1,639
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Re: LT1 GenV swap
Quote:
Is GM using the vacuum pump on the L83 just for vacuum assisted accessories or are they scavenging the crankcase too? thanks
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1970 C-10 LWB "Blu" Instagram (current build pictures) 70_nc_c10 |
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#6 | |
Registered User
Join Date: Jul 2013
Location: Rockwell, NC
Posts: 1,639
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Re: LT1 GenV swap
Quote:
It looks like ICT Billet has a pretty good answer to the power steering question and at a much more reasonable cost compared to the others. The only issue I see is that the pump appears to be put on the wrong side of the engine requiring more hoses across the front end. http://www.ictbillet.com/lt1-l83-alt...uck-gen-v.html
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1970 C-10 LWB "Blu" Instagram (current build pictures) 70_nc_c10 |
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#7 | |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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Re: LT1 GenV swap
Quote:
Clint
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#8 | |
Registered User
Join Date: Jul 2013
Location: Rockwell, NC
Posts: 1,639
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Re: LT1 GenV swap
Quote:
__________________
1970 C-10 LWB "Blu" Instagram (current build pictures) 70_nc_c10 |
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#9 |
*************
![]() Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,846
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Re: LT1 GenV swap
Have you looked into the Holley FEAD setup?
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
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#10 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: LT1 GenV swap
I"m pretty sure the FEAD lets you keep the truck offset balancer stuff, which might be nice if you are mixing and matching the Gen IV w/p and have any concern over the stuff all being in line.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING ![]() |
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#11 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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Re: LT1 GenV swap
I think that's not for an lt1 swap though. I did only view one link but it was all LS blocks....
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#12 |
*************
![]() Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,846
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Re: LT1 GenV swap
I didn't think there was a difference in the LS and new LT blocks.
__________________
Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
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#13 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: LT1 GenV swap
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING ![]() |
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#14 | |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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Re: LT1 GenV swap
Quote:
If the factory LS accessories bolted up, that would be nice, but still need a vacuum pump/source. maybe when I pull the motor and trans from my truck, i'll remove the accessories and test fit em.
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#15 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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Re: LT1 GenV swap
still gathering parts, modified the passenger side a/c and alternator bracket to and a/c only bracket. Simply cut off the excess, drilled the 3rd hole the rest of the way so it can then be bolted to the block. Factory has only 2 bolts, but since its there and is simple, why not.
I got the DirtyDingo LT to LS water pump adapters and for something that was engineered.. they missed the mark on the LT side of the flange.. the rectangle port is off center by about .05 and the width as wide as the gasket too.. the LS gasket is a perfect match. I called them about it and they said I was the first one to notice / complain about it. I cant see any reason it was not made to be centered in the gasket which matches the coolant port on the block ... I'm pretty sure it would work no problem... but I already drew up the LS and LT flanges in cad and made my own adapter a few months ago... I also want the adapter to be about .1 thinner. I sent it to a machine shop to see how much it would cost to get made. I know it will be more than 150 but if its not to much more, Ill just have it made and sell the DD ones. Still waiting on the BCM, BCM connectors, Cluster Connector, FPCM connector and Flex fuel sensor. going to order terminals for all of them so I can make a harness with out splices for a more quality product and less chance of a why is this not working... clint
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#16 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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Re: LT1 GenV swap
added a pic of the adapter
![]() The other hole is also misaligned... ![]()
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#17 | |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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Re: LT1 GenV swap
Quote:
![]() ![]() CNC ported FTW ![]() Can barley tell there's a transition from the adapter to the engine block ports! ![]() Mmm 4 sets for sale. ![]() Gonna source some m8x120 bolts and mock it up but it's exactly how thick I wanted it ![]() Clint
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#18 |
Registered User
Join Date: Apr 2014
Location: Azle,Texas
Posts: 2,248
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Re: LT1 GenV swap
Looks great Clint.... nice work.👍🏼
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#19 |
Registered User
Join Date: Mar 2015
Location: Windsor,Ontario Canada
Posts: 255
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Re: LT1 GenV swap
Clint, I was looking at getting a set of the DD Mounts but was quite honestly put off by the hard corners inside. I was going to do the same thing you are doing and Design and find someone to make me a Ported set. Then I figured I would do exactly like Holley did and design an adapter for their LS brackets to the LT.
Like I said in my last post I have used the LS brackets several times and have been extremely happy with them. |
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#20 |
Registered User
Join Date: May 2006
Location: North dakota
Posts: 15
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Re: LT1 GenV swap
Do you have any more of the water pump adapters?
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#21 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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Re: LT1 GenV swap
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#22 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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Re: LT1 GenV swap
Much nicer..
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__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#23 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: LT1 GenV swap
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__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING ![]() |
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#24 |
Registered User
Join Date: Nov 2013
Location: Las Vegas, Nevada
Posts: 376
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Re: LT1 GenV swap
Nice work. Let me know if you decide to part with the DD adapters.
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#25 | |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
|
Re: LT1 GenV swap
Quote:
Clint
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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