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Posted By: JW51 Never thought I’d say this (LS) - Thu Jul 15 2021 12:47 PM
Im generally not a fan of V8 swaps into vintage vehicles. But I’ve recently developed the itch to “LS Swap” something. Not my 1951 Chevy truck. Not something that would be scarce or particular desirable with its original powertrain. Perhaps a vehicle that isn’t really that old at all.

It just looks like a really fun way to make some very practical, useful power. Tons of ways you can keep tinkering and modify on the (relative) cheap if you so choose.

There’s about a 5% chance of me acting on this. Perhaps I can get my 13 year old son interested enough to make this a father/son project and have enough time to make this his first ride. He likes electronic things.

Late 60s/Early 70s GM car? 70s/80s square body pickup?
Posted By: Justhorsenround Re: Never thought I’d say this (LS) - Thu Jul 15 2021 01:36 PM
Remember this from one parent to another. If you do a pickup you limit the number of knuckleheads he can legally haul at one time. [elvis]
Posted By: Barnfind49 Re: Never thought I’d say this (LS) - Thu Jul 15 2021 01:47 PM
Once you do one you will be hooked. Next thing ya kno your LS swapping your weedwacker. All jokes aside they are a great swap and they are super adaptable to the older vehicles and they are easy to work on. Intimidating to some at first just because they dont know them but let me tell you they are SUPER easy and just fkat out work good. I have a 700hp turbo street car and a bone stock 5.3 in my 49. Either will drive across country today if i wanted with no worries.
Posted By: JW51 Re: Never thought I’d say this (LS) - Thu Jul 15 2021 01:56 PM
Originally Posted by Justhorsenround
Remember this from one parent to another. If you do a pickup you limit the number of knuckleheads he can legally haul at one time. [elvis]

Exactly. My oldest son (15) has a little Nissan pickup. In theory it’s an extended cab, but in practice it’s a 2 seater. Luckily, we wanted a truck. The younger one thinks he wants a car.

And to Barnfind49’s point: I’ve yet to talk to anyone who regrets their LS swap. I’ve always hated the “me too” 350 sbc swap. Not sure why I feel differently about this.
Posted By: JW51 Re: Never thought I’d say this (LS) - Fri Jul 16 2021 12:33 PM
Originally Posted by Barnfind49
Once you do one you will be hooked. Next thing ya kno your LS swapping your weedwacker. All jokes aside they are a great swap and they are super adaptable to the older vehicles and they are easy to work on. Intimidating to some at first just because they dont know them but let me tell you they are SUPER easy and just fkat out work good. I have a 700hp turbo street car and a bone stock 5.3 in my 49. Either will drive across country today if i wanted with no worries.

The wiring harness piece looks a little intimidating. Did you modify a factory harness or use something aftermarket?
Posted By: Hotrod Lincoln Re: Never thought I’d say this (LS) - Fri Jul 16 2021 07:41 PM
Originally Posted by Justhorsenround
If you do a pickup you limit the number of knuckleheads he can legally haul at one time. [elvis]

Don't count on it- - - - -my wife, who spent 30-something years as a respiratory therapist at the local hospital got a visit from one of the city's finest while she was at work one night. It seems that they had just done a traffic stop on my daughter's 2-seater Triumph Spitfire, and she and five of her friends bailed out of the car. They had noticed that they were attracting attention, ducked down an alley, and PUT THE TOP UP! The gendarmes told Mama instead of giving her a ticket! Yep, the consequences we doled out were a lot worse than the judge would have imposed. Try walking for six weeks until the next report card comes out- - - -when you live 20 miles out of town!
Jerry
Posted By: Barnfind49 Re: Never thought I’d say this (LS) - Mon Jul 19 2021 02:30 AM
Originally Posted by JW51
The wiring harness piece looks a little intimidating. Did you modify a factory harness or use something aftermarket?

I modified the stock harness. Yes to some it is intimidating but its really not that hard and all the info is online if you care to read it. Im to the point where I dont even pay attention when I do them. I used to take them all apart and weed out anything extra. Now i care less about weeding anything and I just leave it all and pull the pins at ecu and tape it up and leave it all together. Tie in some relays and fuses and its good to go. There is also always the holley terminatorX route too for someone who wants to just plug and play. In some instances its cheaper because it includes new harness, ecu, and guages all built in. There are a lot of different ways to do it. All have ups and downs.
Posted By: MNSmith Re: Never thought I’d say this (LS) - Mon Jul 19 2021 05:45 PM
As long as the wiring diagrams are accurate, the world is your oyster.
Posted By: Rusty Rod Re: Never thought I’d say this (LS) - Tue Jul 20 2021 03:52 PM
The web site was recently opened for 73-87 GM pickups AND the 88-91 K5 Blazers and Suburbans.. The rounded line or the mislabeled "squarebody". These trucks are a bit more plentiful and less expensive than getting into a 72 and older truck (for now).
Posted By: JW51 Re: Never thought I’d say this (LS) - Tue Jul 20 2021 06:08 PM
Originally Posted by Rusty Rod
The web site was recently opened for 73-87 GM pickups AND the 88-91 K5 Blazers and Suburbans.. The rounded line or the mislabeled "squarebody". These trucks are a bit more plentiful and less expensive than getting into a 72 and older truck (for now).

In my area, the market for the 73-87 GM trucks seems to be pretty inflated compared to just a couple years ago. They are getting very popular. Occasionally I see one listed for what seems like a sensible price but that is the exception rather than the norm.

Neighbor has a very original patina’d 73-ish truck that I’d like to have. They are a transmission shop and this is one with signage on the door that I’d assume had some sentimental value. They lowered it recently. Not my thing, but it still looks pretty good.
Posted By: JW51 Re: Never thought I’d say this (LS) - Tue Jul 20 2021 07:51 PM
Back to my LS musings.....

There probably isn’t a simple answer to this (depends on what vehicle), but how do folks deal with swapping a modern engine/tranny into a vehicle with one with a torque tube driveline?

It’s my understanding that the torque tube itself is integral to the rear suspension in some old cars.
Posted By: Justhorsenround Re: Never thought I’d say this (LS) - Tue Jul 20 2021 08:15 PM
They remove the entire driveline and swap/adapt to a later setup.
Posted By: Barnfind49 Re: Never thought I’d say this (LS) - Wed Jul 21 2021 01:49 AM
I LS swapped mine with full factory driveshaft on my 3/4 ton. It had the half torque tube. Kept the truck bone stock from the transmission back. Used it like that for a while until I swapped in the borg warner OD trans then had a new shaft made up.
Posted By: JW51 Re: Never thought I’d say this (LS) - Wed Jul 21 2021 03:01 AM
I get the rear end swap and the switch to open driveshaft. What I don’t quite understand is how much one has to re-engineer the rear suspension (think cars that have something other than a parallel leaf spring setup).
Posted By: Barnfind49 Re: Never thought I’d say this (LS) - Wed Jul 21 2021 12:45 PM
Not sure about any of the cars but the truck is pretty straightforward to bolt together any combo that you want. I have a 2001 engine bolted to a 70’s v8 truck bellhousing bolted to the factory 318 3 speed column shifted trans. When I built the truck I actually put the torque tube and rear shaft in and located the motor mounts to suite the factory driveline. Then I welded up the engine mounts and was good to go.
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