fuel injectors 24# or

[silver 80]

Does anyone know what # fuel injectors I should use.
It's a ZZ4 with a stock tpi set up.
Thanks
tom

 

[KANE]

Does anyone know what # fuel injectors I should use.
It's a ZZ4 with a stock tpi set up.
Thanks
tom

I'm running 24lbs injectors on my lightly modified L82. They should work well for your application.

FYI- the 24lbs were found on LT1s and LT4s (300-330hp) motors.

Do you have a chip yet? I had a custom chip burnt for my set up. I'd be happy to give you his name and email.

 

[speedmaster4]

zz4 will love 24 lb injectors, especially on cold start...22 lb squirters will actually make a tiny bit more power at w.o.t up to 4300 rpm (tpi intake is too restrictive to make torque above that rpm, altho it will rev higher -- eventually) ... after the ecm has 'learned' the o2 output of either size injector there will be no diff when running in 'closed' loop during 'normal' driving conditions.. tpi intake runners/manifold are not matched to the zzzzzz -- put an lt1 intake, etc (even a good carb) on in place of the tpi to realize the potential of the zz4.

 

[silver 80]

please send info for the chip burner. I would also like to tap into some of your knowledge.

I had a carb on it, it was great, but I want fuel injection, I do have a spare LT1 intake sitting in my garage and a complete TPI set up. I went with the complete set up so I don't have to buy any more parts. I actually have an engine from an 88 vette and just starting to swap parts over.

Thnks for the info
tom