the 6.2L LS3 engine

**ahmadooo** · 10-27-2009, 04:32 AM

Hi every one ....
i need to know about the LS3 engine !
whats the difference between the CORVETTE 2009 and the CAMARO SS 2010 ???
because on the VETTE it has a great 440 HP ,,,
and on the CAMARO it has 426 HP ?????

**shady milkman** · 10-27-2009, 05:06 AM

basically only in the tune and possibly the exhaust manifolds

**shady milkman** · 10-27-2009, 05:08 AM

personally i think the ls3 is one of the best engines gm has...it has great heads..and its ability to be bored and stroked to a 427 is amazing

**justinmc978** · 10-27-2009, 08:57 AM

same difference between the ls1 in vettes and maros, exhaust and underrating to maro's motor.

**Zinergy** · 10-27-2009, 09:24 AM

Originally Posted by justinmc978

same difference between the ls1 in vettes and maros, exhaust and underrating to maro's motor.

Well, the manual ls3 camaros have been dynoing 365ishwhp which is pretty close to the 425crank hp rating. Its actually almost exactly 15% loss. So its mostly due to the exhaust. There have already been charts of 400-415whp ls3 camaros with bolt ons and tuning only. So big gains are there to be had.

The vette is only rated at 436hp so exactly 10 over the camaro.

I think both cars are rated well, most of the mustang dyno charts for the 2008 ls3 m6 vettes show up at 375-385whp and the ls3 camaros at 360-370whp.

**Mr. Hyde** · 10-27-2009, 12:01 PM

Originally Posted by shady milkman

personally i think the ls3 is one of the best engines gm has...it has great heads..and its ability to be bored and stroked to a 427 is amazing

I'm personally rather fond of the LS7 myself.

**shady milkman** · 10-27-2009, 12:05 PM

Originally Posted by Mr. Hyde

I'm personally rather fond of the LS7 myself.

as you should. i like the ls7 too..but for me and my t/a....i want a ls3 427

**Larry** · 10-31-2009, 09:55 AM

I have the files for the 2010 Camaro, 2010 Corvette and 2009 Corvette. The 2010 Camaro is richer at some rpm and a leaner fuel mixture at some rpm vs. the 2009 Corvette. The 2010 Corvette is leaner thoughout the PE table. Additionally the High octane table of the 2010 vette has more timing advance than the Camaro. Don't know about the exhaust configuration but tuning alone could account for most of the Corvette's additional power.

**Mr. Hyde** · 10-31-2009, 12:28 PM

I have a Tuner from my old Camaro days that I trust. When we did a little poking around in my 2008 Z06, he said that there are probably about 10 ponies that GM left on the table that could be extracted from a tune on the stock LS7.

**NemesisZ06** · 11-05-2009, 06:43 AM

Originally Posted by Mr. Hyde

I have a Tuner from my old Camaro days that I trust. When we did a little poking around in my 2008 Z06, he said that there are probably about 10 ponies that GM left on the table that could be extracted from a tune on the stock LS7.

You can get 10-15hp out of any stock LS engine with a good tune. Lots of people on the Corvette forum have done that to their stock C5's and Im sure there are C6 guys that have done it too.