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69 Z28 to get an ls3

 
Old 04-16-2019, 11:46 PM
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Default 69 Z28 to get an ls3

I am planning to put an ls3 (and possibly 6 speed automatic) into 69 camaro. Planning to salvage from wrecked auto. Is there any reason to not use truck or suv (clearance issues). Currently have lt1 and 4l60E, trans. built to handle 500hp. I desire 500hp naturally aspirated and low as possible rpm. Week end toy, no intent to race.
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Old 04-18-2019, 02:45 PM
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Originally Posted by farm View Post
I am planning to put an ls3 (and possibly 6 speed automatic) into 69 camaro. Planning to salvage from wrecked auto. Is there any reason to not use truck or suv (clearance issues). Currently have lt1 and 4l60E, trans. built to handle 500hp. I desire 500hp naturally aspirated and low as possible rpm. Week end toy, no intent to race.
I am not exactly sure what you are asking about. LS3 engines never came in trucks. Are you asking about the engines or about the transmission? These swaps have been done a lot of times, you may want to search and read some of the build threads.

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Old 04-18-2019, 03:40 PM
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To be exact, LS3's came only in Camaros and Corvettes, and in Camaros, only with manual trannies. Are you thinking of the L92? that was a truck engine.
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Old 04-18-2019, 11:15 PM
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Originally Posted by g atsma View Post
to be exact, ls3's came only in camaros and corvettes, and in camaros, only with manual trannies. Are you thinking of the l92? That was a truck engine.
Ahem......2014-2017 SS

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Old 04-19-2019, 12:00 AM
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Originally Posted by KW Baraka View Post
Ahem......2014-2017 SS

KW
Weren't some of those LT engines? I thought all non-LT auto LS Camaros were L99's
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Old 04-19-2019, 04:53 AM
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I think he's referring to the full-size SS sedan - didn't the 2009+ Pontiac G8's also come with LS3? Those sedans in addition to the Camaro/Corvette applications...
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Old 04-19-2019, 07:13 AM
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Fifth gen Camaros had LS3s from 2010-2015. In 2016 was 6th Gen and LTx engines.

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Old 04-19-2019, 07:40 AM
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Of course the C7 Vette in the same time frame moved from LS3 to the direct inj version LT1
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Old 04-21-2019, 08:31 AM
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you are correct about the ls3 name plate. The 6.2 in Escalades/ light pickup ect. are very similar engines.
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Old 04-21-2019, 08:34 AM
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Ye olde L92
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Old 04-21-2019, 08:35 AM
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Originally Posted by farm View Post
you are correct about the ls3 name plate. The 6.2 in Escalades/ light pickup ect. are very similar engines.
Not as similar as some think. The LS3 never had AFM or VVT. The L92 had vvt, while the L94 had both vvt and AFM. There are also differences in the valves.

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Old 04-21-2019, 09:56 AM
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....and valve timing --- tuned the motor for more torque lower in the rev range.
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Old 04-21-2019, 09:58 AM
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Different intakes...lol...the list of differences is huge. However, to his point, the basic long blocks are mostly the same.

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Old 04-21-2019, 10:00 AM
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Originally Posted by Project GatTagO View Post
Different intakes...lol...the list of differences is huge. However, to his point, the basic long blocks are mostly the same.

Andrew
Is static CR the same as the LS3?
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Old 04-21-2019, 10:01 AM
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Originally Posted by Michael Yount View Post
Is static CR the same as the LS3?
I believe so...or very..very close.
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Old 04-21-2019, 10:15 AM
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10.5 to 10.7 (3) - so piston top and or combustion chamber is also different.
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Old 04-21-2019, 10:22 AM
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Originally Posted by Michael Yount View Post
10.5 to 10.7 (3) - so piston top and or combustion chamber is also different.
Piston top. Hence what I said about "mostly" the same.

Andrew
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Old 04-21-2019, 11:20 AM
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Originally Posted by Project GatTagO View Post
Not as similar as some think. The LS3 never had AFM or VVT. The L92 had vvt, while the L94 had both vvt and AFM. There are also differences in the valves.

Andrew
The L9H in my truck doesn't have AFM or VVT but yeah there are differences in the intake manifold, cam, valves, etc, etc.

OP, friend of mine has an all original '69 Z28 that he's owned since the 70s, I love those cars. Sad to see yours won't have a DZ302 but the LS3 will be much more street friendly with a much broader powerband.
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Old 04-21-2019, 06:16 PM
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Get a dropout L99 with the automatic transmission and wire harness. It will be the easiest and best way to go.
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Old 04-21-2019, 09:03 PM
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Originally Posted by 383z View Post
Get a dropout L99 with the automatic transmission and wire harness. It will be the easiest and best way to go.
Automatic in a 69 Z28? In the words of Hall & Oates - I canít go for that...
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