New Chev Firing Order

[Kurek, Larry]

Yup...this is the new LS1 firing order. They just flipped 7 and
4....which is no big deal, just a cam change of 180 degrees between the
lobes on these cylinders...  Why they did this...who knows. Maybe it
reduces vibration, or results in a more balanced exhaust flow?

TTYL!

Larry

> -----Original Message-----
> From:	EFISYSTEMS at aol.com [SMTP:EFISYSTEMS at aol.com]
> Sent:	Thursday, October 22, 1998 2:29 AM
> To:	diy_efi at efi332.eng.ohio-state.edu
> Subject:	New Chev Firing Order
> 
> Hi Folks,
>       While working on this 99 Chevy truck I found they changed the
> firing
> order from 18436572 to 18736542......since it is coil on plug I only
> found
> this out by checking the camshaft....does anyone know why the firing
> order
> change and is the 98 vette the same???????
> -Carl Summers