Conversions & Swaps LSX Engines in Non-LSX Vehicles
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The G-Body Swap Thread

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Old 02-24-2011, 08:23 PM
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Wouldnt 70ish chevelle aftermarket ls swap headers work for this swap on a g-body? The engine cradles are the same. I currently have some hooker long tubes from a 70 chevelle on my 86 ss .
Old 02-25-2011, 05:35 PM
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Originally Posted by llorracs93s10
they do not look too bad. How was fitment? Also, from what i read, best motor mounts to use is the guys on here, cant remember his account name, but has the ls7 in his monte with these headers? Our monte has the stock hood but i want to put on a steel 2 inch cowl, so if the truck intake and accessories work with that, that will be nice at least until I get a camaro intake on it.
It's a tight fit, but they are there inplace with clearance. You are thinking of Jonb..something like that.
Old 02-25-2011, 05:53 PM
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Originally Posted by the_merv
It's a tight fit, but they are there inplace with clearance. You are thinking of Jonb..something like that.
Yea I just checked, thats him. Your swap looks good man. Im going PM you for a few questions here in a second.
Old 02-25-2011, 06:26 PM
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from what i read, best motor mounts to use is the guys on here, cant remember his account name, but has the ls7 in his monte
That would be me, John B! With the proliferation of LSx swap motor mount manufacturer's on the market today I have discontinued production of the mounts that I offered previously.
Old 02-26-2011, 12:30 AM
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Originally Posted by llorracs93s10
they do not look too bad. How was fitment? Also, from what i read, best motor mounts to use is the guys on here, cant remember his account name, but has the ls7 in his monte with these headers? Our monte has the stock hood but i want to put on a steel 2 inch cowl, so if the truck intake and accessories work with that, that will be nice at least until I get a camaro intake on it.
Justin good to see you on this site, I don't visit S10F anymore. Good to see you still have your LT1 swapped S10.

The truck accessories will fit under the stock hood with the clamshell mounts. The BRP ones however will not clear. You can use the car intake with the truck accessories with a kit someone sells on here.

Merv, did you have to massage the Hedman's to fit properly? I have a set of $260 Pacesetters here and with the BRP mounts they rub the crossmember, trying to balance the cost of selling these and getting BRP's, or using what I have, smashing them up, and getting them coated with flanges welded onto them.
Old 02-26-2011, 12:38 AM
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Nope..they went right in..

I'm using the standard SBC->LSX Motor Mount Adapter Plates and the SBC Clamshells & Stock Cradle Mounts..
Old 02-26-2011, 01:20 PM
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Originally Posted by 01cherryreds10
Justin good to see you on this site, I don't visit S10F anymore. Good to see you still have your LT1 swapped S10.

The truck accessories will fit under the stock hood with the clamshell mounts. The BRP ones however will not clear. You can use the car intake with the truck accessories with a kit someone sells on here.

Merv, did you have to massage the Hedman's to fit properly? I have a set of $260 Pacesetters here and with the BRP mounts they rub the crossmember, trying to balance the cost of selling these and getting BRP's, or using what I have, smashing them up, and getting them coated with flanges welded onto them.
Do you have a link to the kit? And so all the front accessories including the water pump and all will work with a car intake? And I've read you need to swap to fbody injectors as well correct?

And yes still got the truck. I'm looking to ***** it as much as possible on the shows as I can. Trying to finish her up this spring so I can be done with it and love onto getting cash for life and the Monte!
Old 02-27-2011, 12:50 AM
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Here's the link to the kit:
https://ls1tech.com/forums/new-produ...-270-99-a.html

The kit basically has you take the idler off and relocate it, and put the new style truck water pump on with a different belt. You only need the LS1/LS6 injectors when going to a car intake. I think you can make the car ones work on the truck intake somehow but not vice versa.
Old 02-27-2011, 07:15 AM
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Originally Posted by 01cherryreds10
Here's the link to the kit:
https://ls1tech.com/forums/new-produ...-270-99-a.html

The kit basically has you take the idler off and relocate it, and put the new style truck water pump on with a different belt. You only need the LS1/LS6 injectors when going to a car intake. I think you can make the car ones work on the truck intake somehow but not vice versa.
Going with a car intake would be what I want to do. So this kit will let me do so and than just need the ls1/2 injectors than? Everything else is good to do that swap?
Old 02-27-2011, 01:30 PM
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From what I understand yep. You could even make your own kit by buying a used or takeoff truck water pump and buy the belt and idler pulley from them for $95 shipped.

I'm not really sure about p/s pulley interference, I bought the KWIK brackets and used a LS1 FEAD that I pieced together from this site. Then bought the PS pump with the smaller windowed pulley off their site. Money isn't really an issue with my build anymore though
Old 02-27-2011, 01:41 PM
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I have a brand new l92 water pump for sale if anyone is interested. It should clear the ls1/6 cable throttle bodies

https://ls1tech.com/forums/parts-cla...l#post14296784

Originally Posted by 01cherryreds10
From what I understand yep. You could even make your own kit by buying a used or takeoff truck water pump and buy the belt and idler pulley from them for $95 shipped.

I'm not really sure about p/s pulley interference, I bought the KWIK brackets and used a LS1 FEAD that I pieced together from this site. Then bought the PS pump with the smaller windowed pulley off their site. Money isn't really an issue with my build anymore though
Old 02-28-2011, 12:31 PM
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Quick question, a 04 silverado ext cab 4x4 4.8 transmission, that good fit for a gbody swap? Can get one for free needs rebuild but its free. They all are pretty much the same transmission right? Oh its a 1500 also
Old 02-28-2011, 12:44 PM
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gonna be tough makin' that monte/regal/cutlass 4wd. wrong tailhousing.
Old 02-28-2011, 01:12 PM
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Originally Posted by robbyredneck
gonna be tough makin' that monte/regal/cutlass 4wd. wrong tailhousing.
I knew I had a feeling it wouldn't work. So pass on it?
Old 02-28-2011, 01:48 PM
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free is free right? if you have the room and it's easy enough to acquire , then get it. but as far as a 2 wheel drive application, i'd say pass.
Old 02-28-2011, 02:23 PM
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Originally Posted by robbyredneck
free is free right? if you have the room and it's easy enough to acquire , then get it. but as far as a 2 wheel drive application, i'd say pass.
yea no need to keep it unless it was going to be put to use. Even if a trashed trans can net me a few dollars, its still not worth it if it wont work. I wouldnt be doing this swap for a few years, but I figured who not ask to get teh trans from the buddy and he said yes. But now I know I cant use it, no problem.
Old 02-28-2011, 10:02 PM
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Hey cornfed74, where did you have you car dyno tuned at in Michigan? I'm going to need a tune around early summer,

Last edited by Monte4ever; 02-28-2011 at 11:26 PM.
Old 03-04-2011, 11:05 AM
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Originally Posted by John B
Click on my website and you'll find the most documentation regarding the G-body swap http://www.montecarloss.com/ls1montecarloss/
Can I get information on the clutch plate for behind the brake booster for Gbody install? Building a 6.0L/6spd 78 Malibu
Old 03-04-2011, 11:48 AM
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Originally Posted by BAD78BU
Can I get information on the clutch plate for behind the brake booster for Gbody install? Building a 6.0L/6spd 78 Malibu
Are you referring to the master cylinder mounting? If so you use your stock cruise control harness hole if you have one and just drill 2 holes for the mounting bolts. Being a 78 im not sure you will have this hole or not.
Old 03-13-2011, 08:32 PM
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What trans crossmembers is everyone using? I've got BRP mounts, and tried to install the BRP crossmember today and then realized it's not going to fit the car to save my life.

I've looked and found the Iceman 4L60E crossmember fits pretty nicely, but I'm wondering about the G Force one. My dad has one in his 442 and it's a really nice piece.


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