Is the LS9 the LSA SC?

[HiTechRV]

Is the ZR1 engine the CTS-V LSA SC? Both are SC 6.2's, but with different power levels (presumably). Gottaat least be cammed differently from each other based on the vehicle weights.

[Kadonny]

No. The LSA and LS9 are completely different engines. Granted both are supercharged, but the LS9 will be handbuilt just like the LS7 but the LSA will be line built. Expect to see the LSA in other GM models soon......in my opinion.

[GTPprix]

Different superchargers and as far as the other GM models that is correct there is a truck version slated for the Escalade V as long as CAFE doesnt kill it.

[V-Smooth]

Originally Posted by Kadonny

Expect to see the LSA in other GM models soon......in my opinion.

Hmm, like the next gen Camaro?!

[Kadonny]

Originally Posted by V-Smooth

Hmm, like the next gen Camaro?!

[keeksv]

bigger blower and forged internals/Ti rods etc in the LS9

[Vrocks]

I've read that the ZR1 will have 600-620HP which is only 50 more than the CTSV. It doesn't seem like it would need all of the extra Ti internals etc for that small bump. The LSA in the CTSV will be under more load due to the 1,000lb. weight increase for the V. If they needed to got to Ti for the 50 extra hp, I'd think the LSA must be much closer to the "limit" than the LS9 in the ZR1.

I'm wondering if we can bolt on the SC from the LS9 onto the LSA?

[pietroraimondi]

Originally Posted by Vrocks

I've read that the ZR1 will have 600-620HP which is only 50 more than the CTSV. It doesn't seem like it would need all of the extra Ti internals etc for that small bump. The LSA in the CTSV will be under more load due to the 1,000lb. weight increase for the V. If they needed to got to Ti for the 50 extra hp, I'd think the LSA must be much closer to the "limit" than the LS9 in the ZR1.

I'm wondering if we can bolt on the SC from the LS9 onto the LSA?

You probably could, but why?

The ZR1 as mentioned has a larger sized Eaton 2300 supercharger and the CTSV has the smalle sized 1900 series supercharger.

But that is where all of the similarities end.

The CTSV has a stock LS3 bottom end that is rated at a maximum of 650 HP which can be easily achieved with a cam and ported heads package.

I would even bet that a smaller pulley, headers and a more effective cold air intake and less restrictive exhaust and a good tune would get the job done and get you over 600 BHP and I would call it a day.

Anything more than that has you on the edge of the factories cast internals and any more HP would really require alot more coin with regard to a forged internal rototating assembly.

The ZR1 is a hand built "exotic supercar engine" with exotic forged titanium and nickle alloys, larger bolt main caps, etc. This is basically a bulletproof engine that is capable of producing 1000BHP with the appropriate drive train modifications.

[lonestranger]

I believe I've read that the LS9 is based on the LS3 motor rather than the LSA that goes into the V

Originally Posted by Kadonny

No. The LSA and LS9 are completely different engines. Granted both are supercharged, but the LS9 will be handbuilt just like the LS7 but the LSA will be line built. Expect to see the LSA in other GM models soon......in my opinion.

[lonestranger]

From a marketing standpoint, the LS9 is likely being built at the start of it's HP life - that way, next year the price goes up another 5K and the Hp goes up another 50hp etc, etc.

Originally Posted by Vrocks

I've read that the ZR1 will have 600-620HP which is only 50 more than the CTSV. It doesn't seem like it would need all of the extra Ti internals etc for that small bump. The LSA in the CTSV will be under more load due to the 1,000lb. weight increase for the V. If they needed to got to Ti for the 50 extra hp, I'd think the LSA must be much closer to the "limit" than the LS9 in the ZR1.

I'm wondering if we can bolt on the SC from the LS9 onto the LSA?