LS3 ? or SBC - Team Camaro Tech
LSx Swap LSx Engines in Non-LSx Vehicles

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post #1 of 127 (permalink) Old Jun 23rd, 18, 10:41 AM Thread Starter
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LS3 or SBC

Ive been thinking about an LS3 swap for at least a couple years, started a thread, looking to come up with a parts list, etc. I have a 68 with a 350 74-78 truck motor, TKO600 w/ 3.73, complete global west suspension, and Unisteer rack & pinion. Runs pretty well, no real problems.

The more I learn about the swap, the more i realize what a huge project it is (motor, electronics, mounts, headers, radiator, gas tank, etc, etc). From time to time I think it would we so much more simple to get a nice warmed over 350, 383, 400 sbc. Im just looking for a little more hp and torque (and has to look nice). Other factor is, I cant see doing the project myself (as much as Id love to!), due to conflicting priorities for time, owning/running a business, family, etc. I thought I had someone lined up to do the LS3 swap for me this spring, until he blew me off (after waiting a year already).

For what its worth, Id appreciate everyones feedback and advice (please). LS3 or SBC, and why? Thanx for listening.

Brad
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post #2 of 127 (permalink) Old Jun 23rd, 18, 10:50 AM
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Re: LS3 or SBC

Following,,I'm wondering the same,,,,I was thinking a crate 6.2L,,,,I LOVE the one in my 2017 Silverado!
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post #3 of 127 (permalink) Old Jun 23rd, 18, 12:26 PM
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Re: LS3 or SBC

Have you thought of this build?

https://www.powernationtv.com/episod...0/one-fine-440

No computers, nor special mounts, lots of horsepower and even more torque. It is what I would consider if a 540 cube or larger displacement BBC was off the table.

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post #4 of 127 (permalink) Old Jun 23rd, 18, 12:52 PM
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Re: LS3 or SBC

A stock 6.0 with nothing more than cam and spring swap, add a carb intake, and a Daytona or MSD box....DONE !

You will need all the swap parts no matter what way you go.

Works for me

[url=https://flic.kr/p/njWdJV]
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post #5 of 127 (permalink) Old Jun 23rd, 18, 03:06 PM
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Re: LS3 or SBC

it is easy to get 5-600 hp out of a sb without all the head aches of going ls
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post #6 of 127 (permalink) Old Jun 23rd, 18, 03:40 PM
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Re: LS3 or SBC

Quote:
Originally Posted by flat tire View Post
it is easy to get 5-600 hp out of a sb without all the head aches of going ls
LS is easy and not near the headache of a 500 plus HP SBC and much more reliable

Either way power cost $.

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post #7 of 127 (permalink) Old Jun 23rd, 18, 03:50 PM
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Re: LS3 or SBC

Quote:
Originally Posted by bwarren View Post
Ive been thinking about an LS3 swap for at least a couple years, started a thread, looking to come up with a parts list, etc. I have a 68 with a 350 74-78 truck motor, TKO600 w/ 3.73, complete global west suspension, and Unisteer rack & pinion. Runs pretty well, no real problems.

The more I learn about the swap, the more i realize what a huge project it is (motor, electronics, mounts, headers, radiator, gas tank, etc, etc). From time to time I think it would we so much more simple to get a nice warmed over 350, 383, 400 sbc. Im just looking for a little more hp and torque (and has to look nice). Other factor is, I cant see doing the project myself (as much as Id love to!), due to conflicting priorities for time, owning/running a business, family, etc. I thought I had someone lined up to do the LS3 swap for me this spring, until he blew me off (after waiting a year already).

For what its worth, Id appreciate everyones feedback and advice (please). LS3 or SBC, and why? Thanx for listening.

Brad
Just have John do the swap. He can do it in a week! He is the LS swap King!
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post #8 of 127 (permalink) Old Jun 23rd, 18, 03:53 PM
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Re: LS3 or SBC

Quote:
Originally Posted by Vega$69 View Post
LS is easy and not near the headache of a 500 plus HP SBC and much more reliable

Either way power cost $.
the thing about a sb is you don't need a special this or that and no computer
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post #9 of 127 (permalink) Old Jun 23rd, 18, 04:42 PM
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Re: LS3 or SBC

Quote:
Originally Posted by flat tire View Post
the thing about a sb is you don't need a special this or that and no computer
But the computer is what makes it sooo good. Much easier tuning than old school once you embrace it.

My LS3 is 525-550 HP smooth as silk and gets over 20 mpg cruising with the TKO600 and 3:73s

I really like old school too👍👍👍
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post #10 of 127 (permalink) Old Jun 23rd, 18, 05:04 PM
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Re: LS3 or SBC

You can get a ECU right from GM that works with the crate engine you buy. Never had mine hooked to a PC, no tuning was required. Entire car was plug and play except for tach and speedo output. All the Holley mounts and headers where spot on. Only fabrication I did was to mount a GTO radiator.

OP - Once you drive an old car with a fuel injected LS you be wondering why it took you so long to do it.
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post #11 of 127 (permalink) Old Jun 23rd, 18, 05:05 PM
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Re: LS3 or SBC

Dave, if you were gonna build a hybrid LS would you choose Mitchells version over Darts? I am leaning Johns way towards a big crate having thought about the World Products block but the latest Dart version tempts me more.

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post #12 of 127 (permalink) Old Jun 23rd, 18, 05:24 PM
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Re: LS3 or SBC

Awesome thread so far!! No bashing going on!! I really like the way you have yours set up Doug. I have seen Brent's as well kind of mix between old school and new school. I am old school but the addition of the EFI does add extra piece of mind and adds just enough "more" torque to the old school engine. I could imagine what the LS has to offer set up the same way.

I am not opposed to the LS. I just like the old school build of a SB or a BB Chevy.

My opinion if your leaning to the LS, the way Doug and others have done with a carb and intake set up would be my choice.

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post #13 of 127 (permalink) Old Jun 23rd, 18, 05:24 PM
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Re: LS3 or SBC

Bill Mitchell was the first to market. To be truthful I wasn't even aware of Dart's offering.

I saw this build on my Sunday morning car show, andeven though it isn't a budget build it probably costs about the same as an LS-x swap; with the advantage of all of the SBC short block parts being readily available. A 440 cube SBC breathing through late model LS heads topped with a carburetor (my favorite since I see no reason to jump on the EFI band wagon just yet) made sense to me.

I haven't compared the costs of the build but I will wager it is close to the price of a Shafiroff standard deck 582 (I built one just like it and spent twice as much on parts) that you could paint orange and put 396 325 horse decals on (not that I would do that; I claimed my 582 was a 305 SBC with a three quarter race cam, and burnt out glass packs) Which is why having a flat hood and retaining the inner fenders is important. If any one noticed it was a BBC I claimed it was a 402 out of a one ton truck to explain the cam sound.

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post #14 of 127 (permalink) Old Jun 23rd, 18, 05:40 PM
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Re: LS3 or SBC

When I researched the Hybrid the cost was at least 50% to the cost of an LS GM crates motor all said and done.

Now if you have an SBC and can use a lot of the parts then the hybrid might be a good way to go.

They do make big power.
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post #15 of 127 (permalink) Old Jun 23rd, 18, 05:52 PM
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Re: LS3 or SBC

Does anyone have links to these kits complete? What I mean is I'm aware of the Holley kits, but is there a complete kit bolt in for 1st Gen that comes with the crate engine too? or are there too many HP choices that make it hard to put the whole shebang together for one price?
Big Dave, that is a great price for that much horsepower!

Brett.....

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Last edited by Brettallen59; Jun 23rd, 18 at 05:57 PM. Reason: typo
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