I want the specification and part number of the fuel injectors in a
1996 - 2000 Chevrolet 5.7 litre 330 HP motor with Vortec L31 heads and
SFI (sequential port fuel injection)
I particularly want the injector flow rate.
I believe these motors powered or were options in Chevrolet pickups
and possibly other GM vehicles.
I believe other versions of the 5.7 Vortec motor produced 255 HP and
307 HP, my question is not related to those motors.

hi,

Marren Fuel Injection (http://www.injector.com) are always my first
stop for anything like this.  If you were to call them - (203)
732-4565 - they would probably be able to hook you up with a suitable
injector.

According to their site, flow rate can be obtained by the equation:
Injector Flow Rate (lb/hr) =  (Engine HP x BSFC) / (Number of
Injectors x 0.8)
where BSFC is "brake specific fuel consumption" and can be roughly
approximated at 0.5. So, (330 x 0.5) / (8 x 0.8) gives a flow rate of
25.78 lb/hr.

Hope that helps.