How to choose the good LS engine - Team Camaro Tech
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post #1 of 43 (permalink) Old Dec 24th, 19, 03:46 AM Thread Starter
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How to choose the good LS engine

Hello everybody.

I want to swap my 68 camaro with a 6.2 LS.
I just bought a T56 from a LS2 GTO, low mileage.

Now I'm looking for a LS3 or a L92/L9H/L94.

Do I need to care about DOD/AFM?
My goal is 500/550 fwhp. I think with just a cam it should be good.
Of course if I buy a truck engine I'll get a LS3 intake.

Are you recommending site like Car-Part.com--Used Auto Parts Market ?
Do I need to focus on engine still in the car?
For exemple, is this one a good one ?https://www.general-auto.com/used-pa...NE/1000236938/

Thank you
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post #2 of 43 (permalink) Old Dec 24th, 19, 04:27 AM
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Re: How to choose the good LS engine

Mine was bought to rebuild with 150K+ miles and no oil pressure.
It was a pull-out at a shop my buddy works at that I paid the core price ($300) with a refund IF it wasn't rebuildable.
Upon tear-down I found the cam was bad as well as the cam bearing (somewhat known issue)
Took it to a machine shop where the block checked good. No wear at all, block looked great and still had crosshatching.
New rings, bearings, cam, cleaned, re-honed, and gaskets....new motor for $2000-ish Ö..just an option

Buying from a "recycler" you will get a warranty (30 days?) but usually up before you've done the swap.

I would look into a local place (recycler) where you could see it first and any issues (and extra parts) could be seen/had.


Unless you plan to use the DOD/AFM...I would delete it.

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1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53

Last edited by DOUG G; Dec 24th, 19 at 04:46 AM.
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post #3 of 43 (permalink) Old Dec 24th, 19, 04:33 AM Thread Starter
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Re: How to choose the good LS engine

The problem is I live in europe. Currently there is only one LS2, one LS7 and no truck engine for sale in my whole country
Choices are very limited if I buy it locally (which would be preferable for sure).
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post #4 of 43 (permalink) Old Dec 24th, 19, 04:50 AM
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Re: How to choose the good LS engine

Then that may be your best option Vs buying a motor from a dealer and adding all the other stuff you may want/need.

Are you keeping the EFI ?

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post #5 of 43 (permalink) Old Dec 24th, 19, 04:58 AM Thread Starter
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Re: How to choose the good LS engine

Yes I'm keeping EFI. My current SBC has EFI too. I really like it.
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post #6 of 43 (permalink) Old Dec 24th, 19, 05:21 AM
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Re: How to choose the good LS engine

Quote:
Originally Posted by DOUG G View Post
Mine was bought to rebuild with 150K+ miles and no oil pressure.
It was a pull-out at a shop my buddy works at that I paid the core price ($300) with a refund IF it wasn't rebuildable.
Upon tear-down I found the cam was bad as well as the cam bearing (somewhat known issue)
Took it to a machine shop where the block checked good. No wear at all, block looked great and still had crosshatching.
New rings, bearings, cam, cleaned, re-honed, and gaskets....new motor for $2000-ish
As I recall you also did heads and other work to get to your power level and I believe by the time you were done you may have had close to the cost of a new crate motor?

The used Cadillac posted engine is an L94 with DOD/Flex Fuel rated 420 hp and 460 torque. To get to 500 hp it will need a cam swap.

The accessory drive will not work. I don't believe the intake will work as it is too high to clear a 1st Gen hood.

When you get everything done that needs to be done to get to your desired power level and parts need to install you'll be close to the cost of a NEW Crate Engine with a 24 month 50,000 warranty.

The best bang for the buck is the LS3/480
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post #7 of 43 (permalink) Old Dec 24th, 19, 05:23 AM
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Re: How to choose the good LS engine

Here's one for $2800. It appears your gonna have to do your homework and hopefully someone will recommend a trustworthy place for you do make your purchase. You can contact the place selling and ask if they will ship to your location. I also found just a block, but it is a aluminum 6.2 for $1500. That could end up being an expensive route in your location with shipping fees.

I also like the new crate engine option. Yes, it is expensive initially, but like John points out, it is the bottom line that you should focus on.

Engine 6.2L VIN 8 8th Digit Opt L92 Fits 07-08 ESCALADE 13573478

Chevy LS L92 6.2
Aluminum Block


Good Luck!

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Last edited by Brettallen59; Dec 24th, 19 at 05:26 AM. Reason: Edit
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post #8 of 43 (permalink) Old Dec 24th, 19, 05:39 AM
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Re: How to choose the good LS engine

Another option.

Keep your SBC. Add heads, cam etc to get to 500 hp. You already have EFI.

Installing the T56 and a good rear end gear, say 4.10 and youíll have an amazing car.

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post #9 of 43 (permalink) Old Dec 24th, 19, 05:57 AM Thread Starter
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Re: How to choose the good LS engine

I already have a good 383. I think it is about 450fwhp. It is running strong BUT I don't like to drive it. At all...
It has a big cam, big heads (230cc, probably too big), etc. The engine is not daily driver friendly or whatever you call it. Even with my 3.7 rear end, starts are not easy and I need to stay on the clutch for a long time, fuel consumption is REALLY bad (around 9mpg), I have vibration everywhere, fuel auto tunning from Holley Sniper doesn't work due to the big cam, etc.

So I have two solutions and I'm thinking about both :
- do what it is needed to do to make my engine works well : fix the vibration problem (engine balance ?), 4.1 rear end for my 1st gear issue, T56 would help fuel consumption too, etc
- or LS swap

First solution would be easier and cheaper but I don't want to be disappointed. If I do all the things needed and still not like the result I would have spend money and time twice.

I don't know. What I know is I don't drive the car anymore because I don't like it. So I need to find a solution
What I want is an easy/modern engine. I guess it can be done with a SBC but I personally don't know how.
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post #10 of 43 (permalink) Old Dec 24th, 19, 06:12 AM
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Re: How to choose the good LS engine

Your best choice IMO is to change out your cam for a street friendly cam.

The vibration maybe because the 383 is external balanced and possibly has a external internal balanced flywheel and Balancer

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post #11 of 43 (permalink) Old Dec 24th, 19, 06:27 AM Thread Starter
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Re: How to choose the good LS engine

It is an option too.
I know nothing about balancing. All I know is that :





Maybe I should start an other thread?
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post #12 of 43 (permalink) Old Dec 24th, 19, 06:32 AM
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Re: How to choose the good LS engine

Quote:
Originally Posted by Vega$69 View Post
As I recall you also did heads and other work to get to your power level and I believe by the time you were done you may have had close to the cost of a new crate motor?
Yes, the heads added another $1000 to the bill, but if I kept the 317's it would have been close.
It didn't seem like he was looking for MAX power...500 is fairly easy in a LS really (or very close to 500) just need the right parts.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #13 of 43 (permalink) Old Dec 24th, 19, 06:50 AM
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Re: How to choose the good LS engine

Quote:
Originally Posted by DOUG G View Post
Yes, the heads added another $1000 to the bill, but if I kept the 317's it would have been close.
It didn't seem like he was looking for MAX power...500 is fairly easy in a LS really (or very close to 500) just need the right parts.
Yes. The 317s are ok.

Will need new intake. Donít know about fuel rails. With a cam change tuning on a Dyno to get it right. Modified or custom LS harness and fuse box. Oil pan, headers, swap mounts. Provision for steam vents and maybe new radiator.

Easy to get 500 out of a street friendly 383.

I would keep the 383, swap the cam and sort out the other issues. Add the 6 speed and change the rear gear.

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post #14 of 43 (permalink) Old Dec 24th, 19, 06:52 AM
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Re: How to choose the good LS engine

That cam is huge for that 9.8:1 compression. 256/264 @ .050
230cc heads ?
3500-6900 range ?

Not really street friendly and can see why you're not really happy.

6.2L seems to be on every bodies list which equals more $$$$....IF you're set on a LS motor... 6.0L is a decent option and the LY6 (6.0L) comes with the LS3 heads.

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post #15 of 43 (permalink) Old Dec 24th, 19, 07:40 AM
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Re: How to choose the good LS engine

I agree, put in a better cam...I would rather see a cam more towards torque the horsepower for a street car.

Torque is what sets you back in the seat. HP numbers are for show.

Something in say the 230/240 @ 500-525 on a 110-112 LSA range I think would be a lot better

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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