Engine Confusion

Philm · #1 (**permalink**) 06-04-2008, 06:08 PM

I appreciate and have a respect for the LS series engines and would as I have said many times before concider the LS7 for a cobra if I was to build one now.

There seams to be a double standard when it comes to the adr complience of the LS engines. When ever I hear the power being quoted there is always the tag of with a cam change and an ecu tweak.

This change would therefore make the engine illegal and as Les has stated may cause issues with insurance and registration.

To use the argument that they are ADR complient and then say ,"L76+ cam=approximately 310 kw at the wheels" is rediculously hipocritical.

So lets call a spade a spade, a "standard" LS2 or L98 is a 220KW engine at the fly wheel, or something like that.

Just like a windsor to get more power means modifications and $$$$$$$.

Phil

Rebel1 · #2 (**permalink**) 06-04-2008, 06:21 PM

Quote:

Originally Posted by Philm

So lets call a spade a spade, a "standard" LS2 or L98 is a 220KW engine at the fly wheel, or something like that. Phil

Now now uncle Phil.....let's not underestimate

.....make that 268Kw at 5300rpm.

See here: http://media.gm.com/us/powertrain/en..._L76_G8_GT.pdf

Philm · #3 (**permalink**) 06-04-2008, 06:26 PM

Thanks Les,
I was hoping I was not to far out.

But my point, 268KW is not 310RWKW.

Phil

Rebel1 · #4 (**permalink**) 06-04-2008, 06:44 PM

Quote:

Originally Posted by Philm

Thanks Les, I was hoping I was not to far out.

But my point, 268KW is not 310RWKW.

Phil

Phil, you are as bad as my first wife in reporting the size of things.

WKB · #5 (**permalink**) 06-04-2008, 06:47 PM

Quote:

Originally Posted by Rebel1

Now now uncle Phil.....let's not underestimate

.....make that 268Kw at 5300rpm.

See here: http://media.gm.com/us/powertrain/en..._L76_G8_GT.pdf

Les,
After reading the latest Wheels magazine you got to wonder if you can trust these figures. They dyoned a FG Falcon GT and a HSV 6.2ltr Commodore. The result showed that although the Commodore had more kilowatts on paper than the Falcon, on the dyno the Commodore was a long way behind the Falcon.

Merv,
In hindsight I think that I would have used a 302w. Nothing wrong with the Toyota motor, but as Phil said they have the best exhaust note of any V8.

If your chassis was made for the chev motor it will not be wide enough for 4.6ltr quad cam

Warren

Rebel1 · #6 (**permalink**) 06-04-2008, 07:02 PM

Quote:

Originally Posted by WKB

Les,
After reading the latest Wheels magazine you got to wonder if you can trust these figures. They dyoned a FG Falcon GT and a HSV 6.2ltr Commodore. The result showed that although the Commodore had more kilowatts on paper than the Falcon, on the dyno the Commodore was a long way behind the Falcon. Warren

That's why GM started testing engines using an international standard. ie. SAE J1349.

Having said that....with cars presented for motor mag tests one does not know who tuned and when.

We know that with the Commodore a huge amount of power can be attained from a aftermarket tune. The GM tune has more to do with economy and compliance than performance.

The Falcon GT could have had an aftermarket tune and the HSV a standard factory tune.

Frankly Warren, I wouldn't even consider putting the latest Falcon GT engine into a cobra but that is only my opinion.

boxhead · #7 (**permalink**) 06-04-2008, 06:27 PM

Quote:

Originally Posted by Philm

I appreciate and have a respect for the LS series engines and would as I have said many times before concider the LS7 for a cobra if I was to build one now.

There seams to be a double standard when it comes to the adr complience of the LS engines. When ever I hear the power being quoted there is always the tag of with a cam change and an ecu tweak.

This change would therefore make the engine illegal and as Les has stated may cause issues with insurance and registration.

To use the argument that they are ADR complient and then say ,"L76+ cam=approximately 310 kw at the wheels" is rediculously hipocritical.

So lets call a spade a spade, a "standard" LS2 or L98 is a 220KW engine at the fly wheel, or something like that.

Just like a windsor to get more power means modifications and $$$$$$$.

Phil

I am happy to help you with the power upgrade by fitting a modified LS serioes engine Phil, ie not compliance certified motor (just like your current one)

Come on Phil, you too can join us on the other side.

Philm · #8 (**permalink**) 06-04-2008, 06:35 PM

David,
my starter motor is fine, thanks

Phil

400TT · #9 (**permalink**) 06-04-2008, 06:46 PM

Phil, LS7...yeah baby. That's enough engine to make most people consider the darkside and best of all it's fully compliant with 500+HP, even for you NSW chaps.

Merv, I've changed my mind, go the LS7. Just a tad more money.

http://www.superchevy.com/technical/...ls7/index.html

As an aside, I'm actually going with an LS7 in my next car.

Tenrocca · #10 (**permalink**) 06-04-2008, 06:58 PM

Quote:

Originally Posted by Philm

To use the argument that they are ADR complient and then say ,"L76+ cam=approximately 310 kw at the wheels" is rediculously hipocritical.

Took our cranky pills this morning Phil?

If you took the time to read my post fully, you would see I was drawing comparisions between the mods required on the windsor to get 240 odd RWKW, and to get 310 on the L76. Either mod would make both engines non ADR compliant (i dont think my post even referred to ADR compliance).

A ridiculous comment from you there - go to the mirror and take a good hard look at yourself.