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-   -   03/04 346 camaro/firebird H.P. adjustment (https://classracer.com/classforum/showthread.php?t=51274)

Stock726 01-13-2014 11:17 AM

Re: 03/04 346 camaro/firebird H.P. adjustment
 
Quote:

Originally Posted by farmco r/sa (Post 416126)
under the nhra stock car classification for 2003 chevrolet section the change is under "GT factors." at the top, it is the yellow highlighted change dated 1/1/14. at the risk of sounding nieve what is a "GT factor" in stock???

This is because of the new rule that you can only run combinations that don't exist in classes that don't exist.....

farmco r/sa 01-13-2014 12:12 PM

Re: 03/04 346 camaro/firebird H.P. adjustment
 
Quote:

Originally Posted by Stock726 (Post 416284)
This is because of the new rule that you can only run combinations that don't exist in classes that don't exist.....

interesting.... very interesting. more confused now..

goinbroke2 01-13-2014 12:29 PM

Re: 03/04 346 camaro/firebird H.P. adjustment
 
Quote:

Originally Posted by Stock726 (Post 416284)
This is because of the new rule that you can only run combinations that don't exist in classes that don't exist.....

Exactly, that's why the 2013 mustang with the powerstroke is in SD/C and SD/CA. Personally I think the 400hp factory rating is a little high and it should actually be a SD/D or SD/DA combo.


edit: Just realised that SD is for naturally aspirated diesels, should of been SDT/C and SDT/CA

countrypuppy4865 01-13-2014 12:30 PM

Re: 03/04 346 camaro/firebird H.P. adjustment
 
Upon my own research, I have gathered that the 405hp engine for GT was previously rated the same as the regular LS1, but the 405hp version has only one casting number for the head. This casting number is not the same as any other LS1 engine. Therefore this makes this combo different than the others. Is there 90hp more in this head? Absolutely not. However, it is listed with only one casting number for the head.

farmco r/sa 01-13-2014 12:44 PM

Re: 03/04 346 camaro/firebird H.P. adjustment
 
Quote:

Originally Posted by goinbroke2 (Post 416292)
Exactly, that's why the 2013 mustang with the powerstroke is in SD/C and SD/CA. Personally I think the 400hp factory rating is a little high and it should actually be a SD/D or SD/DA combo.


edit: Just realised that SD is for naturally aspirated diesels, should of been SDT/C and SDT/CA

excellent. it will be cool to see more diesels in stock. is there a VP accepted fuel yet? D10 ?

442OLDS 01-13-2014 01:43 PM

Re: 03/04 346 camaro/firebird H.P. adjustment
 
Quote:

Originally Posted by farmco r/sa (Post 416296)
excellent. it will be cool to see more diesels in stock. is there a VP accepted fuel yet? D10 ?

Ultra-low-sulfur diesel (ULSD)

Ed Wright 01-13-2014 01:47 PM

Re: 03/04 346 camaro/firebird H.P. adjustment
 
Quote:

Originally Posted by countrypuppy4865 (Post 416293)
Upon my own research, I have gathered that the 405hp engine for GT was previously rated the same as the regular LS1, but the 405hp version has only one casting number for the head. This casting number is not the same as any other LS1 engine. Therefore this makes this combo different than the others. Is there 90hp more in this head? Absolutely not. However, it is listed with only one casting number for the head.

Jimmy, isn't that the Vette LS6? 405 is the factory rating, I believe. If so, it should be stick-only, like the 1996 LT4 Vette engine. Different cam. The differences are moot for an S or SS engine. No reason to use it.

Bobby DiDomenico 01-13-2014 03:00 PM

Re: 03/04 346 camaro/firebird H.P. adjustment
 
Quote:

Originally Posted by 442OLDS (Post 416306)
Ultra-low-sulfur diesel (ULSD)

Is there a spec for Urea now?

countrypuppy4865 01-13-2014 07:10 PM

Re: 03/04 346 camaro/firebird H.P. adjustment
 
Mr. Ed,

This is the Z06 engine. It should be manual only.

Ed Wright 01-13-2014 07:27 PM

Re: 03/04 346 camaro/firebird H.P. adjustment
 
Quote:

Originally Posted by countrypuppy4865 (Post 416354)
Mr. Ed,

This is the Z06 engine. It should be manual only.

No more than is different when you take away the cam and factory exhaust and air filter box, that contributed to the advertised 405 hp not much is left in race trim. Can't imagine anybody using one, can you?


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