Gen 5 LT1 swap
Thread Starter
On The Tree
Joined: Jun 2010
Posts: 120
Likes: 2
Gen 5 LT1 swap weird nobody mentioned this before , will LT1 swap directly into a 3rd or 4th Gen car (like f body or GTO) ? . for the moment forget about the DI injector , PCM and headers , what about the block engine mount holes are they identical in terms of location to the previous blocks ? . what about the transmission can a T56 be bolted with out a problem?
Engine mounts and bell housing shouldn't be issues. Even if they don't exactly match up, someone will make some sort of adapters so that they will fit. Just like so many imports and other cars have.
The DI injector shouldn't really be a problem either, as it's all within the engine. Outside of that there is still an electric fuel pump in the tank that feeds the fuel.
The biggest problem will be with the computer, as one will need to be able to control both the engine AND the interior stuff. Not sure if anyone has done the work for that yet.
The DI injector shouldn't really be a problem either, as it's all within the engine. Outside of that there is still an electric fuel pump in the tank that feeds the fuel.
The biggest problem will be with the computer, as one will need to be able to control both the engine AND the interior stuff. Not sure if anyone has done the work for that yet.
It's 100% identical to existing LS stuff bolt hole for bolt hole. You'll have to fab a harness out of the donor, the intank fuel pump for standard LS will supply enough pressure and volume, pcm tuning is accomplishable via HP tuners. The only gray area is the forward accessories as there are no provisions in OE bracketry for a power steering pump. Any A4, T56,TR-6060, 6L80 or 6L90 direct bolt up using current flywheel combos
Someone wants to bankroll me I'll roll in and gut a brand new gmc from out front and I'll figure it out and post results it will go in my 66 chevelle.
Someone wants to bankroll me I'll roll in and gut a brand new gmc from out front and I'll figure it out and post results it will go in my 66 chevelle.
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On The Tree
Joined: Jan 2008
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TECH Regular
Joined: Nov 2005
Posts: 459
Likes: 0
From: Arlington, TN
I see a lot of Chevy and GMC 1500 and 2500's becoming donor vehicles in the near future.
Especially with the 6.2L being a full pull and drop for those wanting a motor and trans and all the rest to strait drop into a vehicle.
Swap out to the LT1 Car manifold for hood clearance and tune the **** out of it.... Oh and don't forget the bolt-on's.
The main thing will be headers as they have a completely different bolt pattern.
I wonder how hard it will be to take an existing set of headers and cut off the flange and weld on a Gen 5 style flange?
I really want to see what the 5.3's will do with a good port-n-polish plus full bolt on's with a stick (I like manuals)... If they can hit 450 rwhp and stay daily driver style drivable, then that would be a good solution for those wanting better gas mileage while still having damn good power.
Plus with VVT the 5.3's power band would probably outdo a LS1 with similar peak numbers.... just food for thought.
Especially with the 6.2L being a full pull and drop for those wanting a motor and trans and all the rest to strait drop into a vehicle.
Swap out to the LT1 Car manifold for hood clearance and tune the **** out of it.... Oh and don't forget the bolt-on's.
The main thing will be headers as they have a completely different bolt pattern.
I wonder how hard it will be to take an existing set of headers and cut off the flange and weld on a Gen 5 style flange?
I really want to see what the 5.3's will do with a good port-n-polish plus full bolt on's with a stick (I like manuals)... If they can hit 450 rwhp and stay daily driver style drivable, then that would be a good solution for those wanting better gas mileage while still having damn good power.
Plus with VVT the 5.3's power band would probably outdo a LS1 with similar peak numbers.... just food for thought.
It's a cool idea, but I imagine the great majority of people building 3rd and 4th gen cars are looking for bang for the buck. So the plethora of already available Gen 3 and 4 LS based combos and aftermarket parts will probably be what most people still use for a long time ago. Only people I see doing the Gen 5 swap is high dollar Pro Touring and SEMA cars.
Teching In
Joined: May 2011
Posts: 35
Likes: 0
From: istanbul / Turkey
Guys!
I have traded my custom chopper for an LT4!!!
I will be placing that beauty on my 4th gen. And i think it's gonna be about january as i receive the new engine / new tranny and wiring, etc...
I think i have to start a careful planning to make everything smooth.
So, here's a check list. Please feel free to chime in and enlighten me.
Engine / LT4
Trans / Auto: 4L80E can work?
Bob@BruteSpeed told me that 4L70E is guranteed to work however i have a feeling that 4L80E can handle the abuse much better. But maybe i can do much better than that and go with a 6L90E...
Accessory drive : GM+bracket for PS ( kinda sorted out but i have doubts about the AC)
Harness: I think GM has already came up with a swap harness but i wonder if Speartech's harness would be more user friendly.
Engine mounts: Total mystery for me
Rear end: FAB9 for sure
Headers: Hope some vendor starts producing LTs for the new LT1/4 on a 4th gen by the time my project starts. If not, i might think about chopping my 1 7/8 LTs and match them to the new engine.
Any of Your inputs are highly appreciated!
Cheers.
I have traded my custom chopper for an LT4!!!
I will be placing that beauty on my 4th gen. And i think it's gonna be about january as i receive the new engine / new tranny and wiring, etc...
I think i have to start a careful planning to make everything smooth.
So, here's a check list. Please feel free to chime in and enlighten me.
Engine / LT4
Trans / Auto: 4L80E can work?
Bob@BruteSpeed told me that 4L70E is guranteed to work however i have a feeling that 4L80E can handle the abuse much better. But maybe i can do much better than that and go with a 6L90E...
Accessory drive : GM+bracket for PS ( kinda sorted out but i have doubts about the AC)
Harness: I think GM has already came up with a swap harness but i wonder if Speartech's harness would be more user friendly.
Engine mounts: Total mystery for me
Rear end: FAB9 for sure
Headers: Hope some vendor starts producing LTs for the new LT1/4 on a 4th gen by the time my project starts. If not, i might think about chopping my 1 7/8 LTs and match them to the new engine.
Any of Your inputs are highly appreciated!
Cheers.
Launching!
Joined: Nov 2005
Posts: 255
Likes: 0
From: Idaho (for now)
It's 100% identical to existing LS stuff bolt hole for bolt hole. You'll have to fab a harness out of the donor, the intank fuel pump for standard LS will supply enough pressure and volume, pcm tuning is accomplishable via HP tuners. The only gray area is the forward accessories as there are no provisions in OE bracketry for a power steering pump. Any A4, T56,TR-6060, 6L80 or 6L90 direct bolt up using current flywheel combos
Someone wants to bankroll me I'll roll in and gut a brand new gmc from out front and I'll figure it out and post results it will go in my 66 chevelle.
Someone wants to bankroll me I'll roll in and gut a brand new gmc from out front and I'll figure it out and post results it will go in my 66 chevelle.
Launching!
Joined: Nov 2005
Posts: 255
Likes: 0
From: Idaho (for now)
Here is a link to my post on the L83 5.3L wiring and pinouts.
https://ls1tech.com/forums/conversio...-pin-outs.html
https://ls1tech.com/forums/conversio...-pin-outs.html
On The Tree
Joined: Feb 2007
Posts: 158
Likes: 0
We need the early adopters to work out the bugs. The Ls is a great platform, I will agree with. The new lt1 is even better, and has alot of potential. If people had said this 20 years ago when the tpi and gen 2 sbc where the promant swap, the hobby would have stopped at that. This is just adding diversity to our hobby. I personally like seeing the new ones done. It is different than what the norm is. If the aftermarket sees this diversity, they will invest in the tooling to bring more swap product to the market. It's what drives the hobby along, and keeps it relevant.
On The Tree
Joined: Feb 2007
Posts: 158
Likes: 0
Personally, I wanna see someone post I lt1 swapped my ls and see some of the 98-02 f bodies heads explode. Of you look at the bulk of them as a group, they are the worst about it being ls1, even to the ls3, and other....I may take that back, the original pontiac crowd is the worst that if it isn't an Arrowhead it isn't worth doing.