Quote:
Originally Posted by HWYSTR455
Nice reference photos and info darbikrash, sure others appreciate it too.
Question for you, is it possible to turn the injectors so the connectors are towards the center of the intake? And have the connectors clear the rails?
Which throttle body is that?
And which ECU did you end up using?
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Yeah, it would have been nice to be able to turn the injectors around so they faced inboard, but they will not clear.
The injectors are Injector Dynamics ID725 high impedance. They are flow balanced to very tight tolerances, but are pretty large for the projected HP of this engine. They flow 70 lbs/hr at 43 psi of pressure. The strategy for this motor is to run relatively short duty cycles on the injectors, and play with optimizing injector timing relative to the valve events. You can't do that with injectors that are at 90% duty cycle, as they are almost always on. Precision flow balancing the injectors allows the motor to idle nicely with injectors this large
The throttle body is a Holley EFI with 4150 flange. The ECU is a Holley HP.
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1964 Catalina 2+2 4sp, 421 Tri-power
1965 GTO, Roadster Shop chassis, 461, Old Faithful cam, KRE heads 305 CFM,
Holley EFI, DIS ignition.
1969 GTO 467, Edelbrock 325 CFM, Terminator EFI
1969 Firebird Convertible
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