[enkeivette]

I asked TT about parallel wiring the injectors, and I guess I wouldn't have to. Just the IACs like I said. I didn't mention the injectors, because honestly I hadn't even thought about it.

This was his response:
Yes but no V8 came w/ a single barrel TBI. Later trucks had a single throttle body but it's a 2 bbl unit with 2 injectors. You can simply use that. EAch injector has it's own driver/wiring. You can not hook up more than 1, it will fry the injector driver.
Tuning the ECM has nothing to do with it...

[94cobra69ss396]

So how do you plan on connecting 4 injectors to a harness that only has connectors for 2?

[Vettezuki]

Originally Posted by enkeivette

I asked TT about parallel wiring the injectors, and I guess I wouldn't have to. Just the IACs like I said. I didn't mention the injectors, because honestly I hadn't even thought about it.

This was his response:
Yes but no V8 came w/ a single barrel TBI. Later trucks had a single throttle body but it's a 2 bbl unit with 2 injectors. You can simply use that. EAch injector has it's own driver/wiring. You can not hook up more than 1, it will fry the injector driver.
Tuning the ECM has nothing to do with it...

You can ping LS1Z28. There's a place here locally that has every connector and wiring diagram ever made practically. If you need something very simple, I think they can cook it up for you pretty cheaply.

[enkeivette]

Originally Posted by 94cobra69ss396

So how do you plan on connecting 4 injectors to a harness that only has connectors for 2?

Crossfire is also only two injectors. Each throttle body has a single butterfly/ single injector.

[enkeivette]

Originally Posted by Vettezuki

You can ping LS1Z28. There's a place here locally that has every connector and wiring diagram ever made practically. If you need something very simple, I think they can cook it up for you pretty cheaply.

I doubt they'll have the edge card style connectors, specifically for the crossfire ECM.

[94cobra69ss396]

Originally Posted by enkeivette

Crossfire is also only two injectors. Each throttle body has a single butterfly/ single injector.

Okay. I thought they had dual injectors in each TB. The last time I saw one was in a T/A back around 1989 when I worked at Econolube in highschool.

[enkeivette]

Originally Posted by 94cobra69ss396

Okay. I thought they had dual injectors in each TB. The last time I saw one was in a T/A back around 1989 when I worked at Econolube in highschool.

Ya, I was surprised to see only one throttle plate on each. I wonder how much it flows. But I guess it doesn't need to flow a lot since it's only about 200hp. ...I wonder if it would support a cam. Probably, since I would need to run an RV cam anyways.

[Vettezuki]

Originally Posted by enkeivette

Ya, I was surprised to see only one throttle plate on each. I wonder how much it flows. But I guess it doesn't need to flow a lot since it's only about 200hp. ...I wonder if it would support a cam. Probably, since I would need to run an RV cam anyways.

Can't find the backup, but from pure memory each TB is 350 CFM and people have got pretty mild H&C up around 350~ on 87octane (remember 8.5CR). Pretty fat on the torque which is the whole point of the Xfire setup. Never got mine dynoed, but a few people said it "felt" considerably stronger than the expected.

[enkeivette]

Originally Posted by Vettezuki

Can't find the backup, but from pure memory each TB is 350 CFM and people have got pretty mild H&C up around 350~ on 87octane (remember 8.5CR). Pretty fat on the torque which is the whole point of the Xfire setup. Never got mine dynoed, but a few people said it "felt" considerably stronger than the expected.

Not bad... If you're going to do heads I would run some 58cc chambers and get that compression up in the high 9s.

[enkeivette]

If I did anything I'd go roots blower/ carb and cam... although, I'd feel bad about ditching the FI if I do get it running... so... I guess I would see doing heads.