Thinking of doing an LS swap - Chevelle Tech
LSx Engine Discuss the LSx engine & associated components here.

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post #1 of 15 (permalink) Old Apr 5th, 19, 7:17 PM Thread Starter
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Thinking of doing an LS swap

I’m thinking of doing an LS swap into my 74. Planning to run a 5.3 NA, just heads and cam to get some power out if it nothing crazy really just want to have an awesome driver car.
What I thinking.
1) get a 5.3 either from local junk yard or eBay.
2) get the dirty dingo mounts to fit my Chevelle and mock it in place with my Muncie.
3) maybe run the edelbrock pro flo 4. Seems like a super easy and nice looking way to get it running and driving. I really don’t know how to wire in the harness from the engine into the car, seems like the most daunting task. I’ll probably run the stock accessories and figure out the power steering and all that.

Is there an easier way and cheaper way than going with the pro flo 4. Seems easy because you can use that harness that come with the kit to run the ignition and the fuel instead of having to mess with the stock harness.

1974 chevelle with 73 laguna nose sbc 357 Brodix IK180 heads Comp Cams XE274H Edelbrock RPM airgap 650 AED double pumper, M20 muncie, Truetrac with 3.73s
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post #2 of 15 (permalink) Old Apr 5th, 19, 8:36 PM
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Re: Thinking of doing an LS swap

Check YouTube. There is a guy who use to have a TV program that walks you through the whole process.


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post #3 of 15 (permalink) Old Apr 5th, 19, 9:10 PM
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Re: Thinking of doing an LS swap

Chuck Hanson


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post #4 of 15 (permalink) Old Apr 5th, 19, 9:13 PM Thread Starter
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Quote:
Originally Posted by Slick87gn View Post
Check YouTube. There is a guy who use to have a TV program that walks you through the whole process.
Thank you

1974 chevelle with 73 laguna nose sbc 357 Brodix IK180 heads Comp Cams XE274H Edelbrock RPM airgap 650 AED double pumper, M20 muncie, Truetrac with 3.73s
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post #5 of 15 (permalink) Old Apr 6th, 19, 3:28 AM
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Re: Thinking of doing an LS swap

Holley Terminator X.

I just started on swapping in a LQ4. But Im doing a carb, nitrous, t350 deal.

If I was doing the factory efi, the Term X is what I would use. Plugs in to all the factory sensors.
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3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

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post #6 of 15 (permalink) Old Apr 6th, 19, 3:50 AM Thread Starter
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Quote:
Originally Posted by Geo71 View Post
Holley Terminator X.

I just started on swapping in a LQ4. But Im doing a carb, nitrous, t350 deal.

If I was doing the factory efi, the Term X is what I would use. Plugs in to all the factory sensors.
That does seem like a good choice. I’d be able to plug that into factory sensors then use the factory intake, coils, and injectors

1974 chevelle with 73 laguna nose sbc 357 Brodix IK180 heads Comp Cams XE274H Edelbrock RPM airgap 650 AED double pumper, M20 muncie, Truetrac with 3.73s
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post #7 of 15 (permalink) Old Apr 6th, 19, 8:15 PM
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Re: Thinking of doing an LS swap

Quote:
Originally Posted by JF74chevelle View Post
That does seem like a good choice. I’d be able to plug that into factory sensors then use the factory intake, coils, and injectors
Lot easier than getting the stock computer tuned and modifying the harness, then having to find someone to tune it....plus it has progressive nos controller 2 step, boost stuff etc....

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #8 of 15 (permalink) Old Apr 6th, 19, 8:33 PM
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Re: Thinking of doing an LS swap

Fitech Ultimate LS, 70051 with trans control. Uses the stock sensors and DBC throttle body. $999.00.

Holley Terminator X Max with transmission contol if you need more bells & whistles like inputs & outputs for forced induction or Nitrous. $1,299.99. But has ONE o2 sensor, will not tune per side like the dual o2 Fitech system will.
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post #9 of 15 (permalink) Old Apr 6th, 19, 9:19 PM
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Re: Thinking of doing an LS swap

OP, sorry, I see you mentioned a Muncie trans, you don't need trans control.

Fitech 70050, $795.00.

Holley Terminator X $999.99.

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post #10 of 15 (permalink) Old Apr 7th, 19, 8:12 AM
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Re: Thinking of doing an LS swap

Dual widebands really isnt needed IMO. My turbo mustang and EFI BBC dont have them and havent missed a beat is years.
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post #11 of 15 (permalink) Old Apr 7th, 19, 9:06 AM
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Re: Thinking of doing an LS swap

Get the Holley 302-2 pan, you will appreciate it.
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Tighten it till it strips and back it off a quarter turn.
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post #12 of 15 (permalink) Old Apr 7th, 19, 2:55 PM
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Re: Thinking of doing an LS swap

The 74 A bodies basically use the 2nd men Camaro front frame sections. Instead of using the universal mounts, I highly suggest looking into the Holley 2nd gen Camaro swap kits. A friend of mine used them on his 73 Buick and the engine dropped right in.

Andrew


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post #13 of 15 (permalink) Old Apr 7th, 19, 3:16 PM
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Re: Thinking of doing an LS swap

What happened today to your current small block? What are you looking to gain with this swap?
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post #14 of 15 (permalink) Old Apr 7th, 19, 4:42 PM
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Re: Thinking of doing an LS swap

go with a 6 liter instead of the 5.3. extra cubes will help
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post #15 of 15 (permalink) Old Apr 10th, 19, 1:09 PM Thread Starter
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Quote:
Originally Posted by Steve R View Post
What happened today to your current small block? What are you looking to gain with this swap?
Nothing happened. Honestly I love my small block. I’m just thinking maybe in a few years I’ll do an LS swap, maybe not. I’ll probably put a gear VENDORS on the Muncie first before I do an LS swap.

1974 chevelle with 73 laguna nose sbc 357 Brodix IK180 heads Comp Cams XE274H Edelbrock RPM airgap 650 AED double pumper, M20 muncie, Truetrac with 3.73s
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