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My LS1/4L60E swap


ss4ever

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Hey guys I just thought I would post on here some info on the LS1/4L60E swap I did in my 72 Monte.

 

I don't have many pictures at the moment of the swap but I will see what I can come up with.

 

I started out with my 72 Monte Carlo that originally had a 350/350 combo and I purchased a 18,000 mile LS1/4L60E from a wrecked 1999 Camaro as a complete pullout with the engine harness.

 

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I used a set of "Dirty Dingo" aluminum engine mount adapters to mount my stock engine mounts to the block, it worked best for me to have the engine mounted furthest forward.

 

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With the engine mounted furthest forward the alternator just barely clears the engine crossmember and the factory F-body oil pan clears perfectly.

 

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I modified the factory Camaro powersteering pressure hose to fit, while I was doing the engine swap I decided to go ahead and install a 83-88 Monte Carlo SS steering box.

 

For exhaust I found a set of cheap shorty stainless headers on EBay for under $200, I also installed a Pypes 2.5" X-pipe system with their Violator mufflers and their 70 Chevelle stainless tips.

 

For the instrument cluster I did some figuring and it made sense to go ahead and bite the bullet and buy a Dakota Digital VHX instrument cluster which is a great system expecially when doing a LS swap in these cars.

 

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For the transmission crossmember I just drilled some new holes and bolted it down. For the driveshaft I needed one that was about 53.5 inches long, knowing G-bodys like I do I bought a driveshaft from a buddy and had to install a conversion rear U-joint to make it fit the rear differential yolk but it fits good. I did go ahead and upgrade my factory floor shifter by installing the kit from Shiftworks to convert to a four speed auto shifter which also supplied me with the brackets on the transmission.

 

I reused my stock radiator, the stock 350 upper hose works well as the lower hose in my application and I got a stainless "bendable" hose for my upper hose.

 

I used a LoKar throttle cable and brackets and their engine dipstick as well. Their stuff is all top notch.

 

For the fuel system I bought a fuel filter for a 98 Corvette which has a built in pressure regulator, I mounted it in front of the rear wheel on the passenger side. For the fuel pump I found a new EFI fuel tank with a high pressure tank on EBay and installed it along with some high pressure fuel injection hose in the rubber hose locations. To get fuel to the fuel rail I spliced in to the factory line just behind the front wheel and made me a line to run to the fuel rail.

 

I did modify the factory engine harness rather than spend the money on a stand alone harness. I did go ahead and delete the emissions and rear O2 sensors from the harness and had the computer re-programmed for my car. I mounted the ECM on the passenger inner fender by using a ECM mount from a 96-05 S-10.

 

 

 

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I hope this post helps someone out, if you have any questions please feel free to ask.

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I'm in the progress of doing this myself. Still getting the big stuff out of the way like the frame swap and such. But next year hoping to grab a LS2 and a 4l80e (maybe a 6l80e if it can be made to fit). What springs did you use for your swap since a LS engine is lighter then a cast SB 350?

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I'm in the progress of doing this myself. Still getting the big stuff out of the way like the frame swap and such. But next year hoping to grab a LS2 and a 4l80e (maybe a 6l80e if it can be made to fit). What springs did you use for your swap since a LS engine is lighter then a cast SB 350?

 

I currently have Hotchkiss 2" drop springs up front with KYB Monotube shocks all around.

 

Hopefully this picture will show how the front sits now.

 

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The red 72 Monte in the pic is a local buddy's car, last year I was able to get the engine back together in it for him and he finally got it on the road after a 14 yeah hiatous. BTW, last weekend we painted up a cowl hood for his car and got rid of the ugly scoop that is shown in this pic.

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  • 2 weeks later...
  • 1 month later...

Just a quick update. I painted the Holley coil covers and painted the intake a grey color a couple weeks ago, really helped the looks underhood IMO.

 

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