69 Z28 to get an ls3

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Apr 16, 2019 | 11:46 PM

farm

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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.

Apr 18, 2019 | 02:45 PM

Project GatTagO

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From: Little Austin

Quote:

Originally Posted by farm

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.

Andrew

Apr 18, 2019 | 03:40 PM

G Atsma

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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.

Apr 18, 2019 | 11:15 PM

KW Baraka

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Quote:

Originally Posted by g atsma

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

Apr 19, 2019 | 12:00 AM

G Atsma

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From: Central Cal.

Quote:

Originally Posted by KW Baraka

Ahem......2014-2017 SS

Weren't some of those LT engines? I thought all non-LT auto LS Camaros were L99's

Apr 19, 2019 | 04:53 AM

Michael Yount

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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...

Apr 19, 2019 | 07:13 AM

Project GatTagO

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From: Little Austin

Fifth gen Camaros had LS3s from 2010-2015. In 2016 was 6th Gen and LTx engines.

Andrew

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Apr 21, 2019 | 08:31 AM

farm

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you are correct about the ls3 name plate. The 6.2 in Escalades/ light pickup ect. are very similar engines.

Apr 21, 2019 | 08:34 AM

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Michael Yount

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Ye olde L92

Apr 21, 2019 | 08:35 AM

#11

Project GatTagO

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From: Little Austin

Quote:

Originally Posted by farm

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.

Andrew

Apr 21, 2019 | 09:56 AM

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Michael Yount

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....and valve timing --- tuned the motor for more torque lower in the rev range.

Apr 21, 2019 | 09:58 AM

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Project GatTagO

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From: Little Austin

Different intakes...lol...the list of differences is huge. However, to his point, the basic long blocks are mostly the same.

Andrew

Apr 21, 2019 | 10:00 AM

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Michael Yount

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Quote:

Originally Posted by Project GatTagO

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?

Apr 21, 2019 | 10:01 AM

#15

Project GatTagO

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From: Little Austin

Quote:

Originally Posted by Michael Yount

Is static CR the same as the LS3?

I believe so...or very..very close.

Apr 21, 2019 | 10:15 AM

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Michael Yount

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10.5 to 10.7 (3) - so piston top and or combustion chamber is also different.

Apr 21, 2019 | 10:22 AM

#17

Project GatTagO

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From: Little Austin

Quote:

Originally Posted by Michael Yount

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

Apr 21, 2019 | 11:20 AM

#18

StealthFormula

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Quote:

Originally Posted by Project GatTagO

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.