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Durability of LS swaps into 60's cars

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Old 04-15-2018, 09:56 AM
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Default Durability of LS swaps into 60's cars

Being an old fart my experience into ECM systems has been limited to (and stymied by) OBD1-1.5, I get chills walking by a C4.

So now I'm seeing cars retrofitted with for example, an LQ9. I am curious, are these retrofitted OEM engine management systems or are they aftermarket?

Is this pretty much foolproof technology?
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Old 04-15-2018, 12:22 PM
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Majority of them are OEM.
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Old 04-15-2018, 12:50 PM
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How do they circumvent the converter sensor?
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Old 04-15-2018, 02:29 PM
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You have to run the front O2 sensors, but the after cat sensors just get programmed out in the tune. The car can be as reliable as any car, depends on the quality of the work done to it.
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Old 04-15-2018, 02:40 PM
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This is sounding better all the time, eliminate the flat tappet zddp oil issue, get an a/c, overdrive trans package. I like it. Course I know its not quite that simple but its doable.
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Old 04-15-2018, 03:06 PM
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Originally Posted by 40flier View Post
This is sounding better all the time, eliminate the flat tappet zddp oil issue, get an a/c, overdrive trans package. I like it. Course I know its not quite that simple but its doable.
It is very doable and many people have done it.

What sort of car are you working on?

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Old 04-15-2018, 03:43 PM
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I saw a retro'd LQ9 car for sale looking for something to run in Florida in the winter, when the population peaks and traffic is almost intolerable. I've fought the battle with aluminium radiators etc. to survive in that heat/turmoil, an ECM controlled retrofit sounds perfect if reliable.
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Old 04-15-2018, 04:07 PM
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Originally Posted by 40flier View Post
I saw a retro'd LQ9 car for sale looking for something to run in Florida in the winter, when the population peaks and traffic is almost intolerable. I've fought the battle with aluminium radiators etc. to survive in that heat/turmoil, an ECM controlled retrofit sounds perfect if reliable.
Done right, it will be MORE dependable than the car was in its OEM state.
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Old 04-15-2018, 04:39 PM
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Basically if you swapped in a late model engine/trans with late model computer to run it then it can be as dependable as the car/truck the engine/trans came out of. I did the swap on an S10 and have put a few thousand trouble free miles on it. It gets better gas mileage and has three times the power of the stock engine I took out.
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Old 04-15-2018, 05:12 PM
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I, too am an old geezer but I embraced the new technology, learned as I went and now fuel injection is actually simple as long as there is no in depth tuning which you can have someone else do. Get a kick out of younger people who don't want anything to do with fuel injection in their build but have his and hers cars/trucks with fuel injection setting in the driveway. Presently I have a '39 Chevy with a 2003 LSx and have had no problems.
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Old 04-15-2018, 05:12 PM
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I've got a base C7, 460, and I don't want to drive old cars anymore. I'm sold on technology. I like to do cruise nights in Florida, there are SO many vettes and I hate to take up space from old cars. Looking for the best of both worlds
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Old 04-15-2018, 05:29 PM
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Guess I'm young enough to still like driving the old stuff! LOL! Put over 100k on this old girl, and still going strong.... 2001 LS1/4l60e
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Old 04-15-2018, 05:44 PM
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Originally Posted by ls1nova71 View Post
Guess I'm young enough to still like driving the old stuff! LOL! Put over 100k on this old girl, and still going strong.... 2001 LS1/4l60e
Yep, I've got a tri power GTO, had the chambers wowed out to stop the spark knock, lost enormous power, put a POS Tremec 600 for OD in it which is is a major disappointment after I chopped the hell out of the floor pan to squeeze it in. The oil companies are currently squirming on the ZDDP problem, debate is raging on and I don't want rounded lobes on my cams. Good friend just traded his 66 427/390 coupe for a resto-mod Camaro because of the same problems.

There's alot to be said for 38 mpg in 7th gear, all the comforts, most Porches etc pass by quietly, except for the Hellcat yahoos of course, who love to hit the exhaust and accelerate away like the Enterprise.
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Old 04-15-2018, 05:52 PM
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Originally Posted by 40flier View Post
Yep, I've got a tri power GTO, had the chambers wowed out to stop the spark knock, lost enormous power, put a POS Tremec 600 for OD in it which is is a major disappointment after I chopped the hell out of the floor pan to squeeze it in. The oil companies are currently squirming on the ZDDP problem, debate is raging on and I don't want rounded lobes on my cams. Good friend just traded his 66 427/390 coupe for a resto-mod Camaro because of the same problems.

There's alot to be said for 38 mpg in 7th gear, all the comforts, most Porches etc pass by quietly, except for the Hellcat yahoos of course, who love to hit the exhaust and accelerate away like the Enterprise.
If you want to swap the GTO, there are a lot of well sorted products for the swap. I swapped my 70 GTO back in 2008 and there were very few parts available at that time. By far, the best A-body swap kits are made by Holley. They make the right pan, mounts for engine and various transmissions, headers, and full exhaust systems.

If I had all the parts, I could probably do that swap in a couple of weekends.

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Old 04-15-2018, 05:53 PM
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40flier - my old Volvo has been V8/efi'd/roller lifters/etc. for 22 years now. Now LS3 running OEM GM 08 Corvette ECU. Nothing is "foolproof" -- but it's a lot more foolproof than the old stuff I grew up with. I bought my first injected car in 1978 and haven't owned a carb since. Jump in. The water's great.

Oh - and you'll get a lot better fuel mileage than before -- but don't hold your breath waiting for 38 mpg....
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Old 04-15-2018, 06:40 PM
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Originally Posted by 40flier View Post
Yep, I've got a tri power GTO......
http://www.brphotrods.com/products/6...cts/index.html


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Old 04-16-2018, 10:06 AM
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I've got almost 10 years on my 98 Wrangler LS6/4L60E swap.

It has been bullet proof. It's my summer running around town car and I plow snow with it in the winter. Starts with the turn of the key no matter what the weather. Doesn't overheat.

I'm 75% done building a 68 C10 with a LS1/T56 swap. I wouldn't build anything else but a LS based engine.

If you are going to buy a LS swapped vehicle just make sure the swap was done properly. Get all the receipts so you know what components were used.

Like any "used" car if you aren't familiar with the vehicle or the swap take it to someone or shop that that is. May cost a few bucks but could save major headaches down the road.
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Old 04-16-2018, 10:21 AM
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Originally Posted by Project GatTagO View Post
If you want to swap the GTO, there are a lot of well sorted products for the swap. I swapped my 70 GTO back in 2008 and there were very few parts available at that time. By far, the best A-body swap kits are made by Holley. They make the right pan, mounts for engine and various transmissions, headers, and full exhaust systems.

If I had all the parts, I could probably do that swap in a couple of weekends.

Andrew
I don't put many miles annually and I put up with the tri-power-

triple your problems with floats, pumps, etc for the Rochester howl at WOT. I am looking for something else I can put miles on without having to pay $$$ for the POS Chinese "Restoration" parts.
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Old 04-16-2018, 10:28 AM
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Originally Posted by KW Baraka View Post
Thanks for the link, so you dumped the OBD 1.5 on the 95? I can't walk by a C4 without a chill running through my body.

I'm not having much luck finding LS retros on the net, any ideas where to look?
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Old 04-16-2018, 10:33 AM
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Originally Posted by 40flier View Post
....

I'm not having much luck finding LS retros on the net, any ideas where to look?
What exactly looking for?

Andrew
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