I have just about got all my parts together for a 383 stroker motor. the motor will have stock heads and a cc305 or 306 cam. I will be using a 125 shot on it. i figure i would atleast need 30# injectors right?

What about if i ran N/A could i just use my stock ones till i get the nitrous system on?

thanks
Shawn

 

Got to know expected HP to calculate correctly.

Go to http://www.smokemup.com/auto_math/fuel_injector.php

this may help

 

A rough guideline would be 24#/HR for up to 400 flywheel HP (do you really mean "stock" heads?), and 30#/HR up to 500 flywheel.

Whether the nitrous has any affect at all on the injector size depends on the type of system you use. A wet system doesn't require any extra fuel through the injectors. A dry system will generally use increased fuel pressure to supply extra fuel when you spray, not larger injectors. The exception would be a dry system running off an aftermarket computer that could alter pulse width based on switching to a nitrous program when you spray.

 

it will be a dry nitrous system and i do mean "stock" heads. No money to have them done righ tnow.

thanks
Shawn

 

Then I'd say to live with the 24's until you have the $$$$ to upgrade the heads and the injectors at the same time.