TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Anyone have 55pph injectors on a 305?

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Old 04-06-2003, 09:04 PM
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Car: Bee-Bowdy
Engine: blowd tree-fity
Transmission: sebin hunnerd
Axle/Gears: fo-tins
Anyone have 55pph injectors on a 305?

I'm putting a 305 in the 'ole Stro here in a month or so and I'm keeping my 55 pph injectors.

If any of you have done this I'd like to know what you have your BPC set to...assuming you tune PROM's.

I'm going to try 132 first, but this is just going off the BPC formula. I'd like to have some "real world" tested numbers if I could.
Old 04-06-2003, 09:54 PM
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I ran mine at 134, worked ok.
Old 04-06-2003, 10:59 PM
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Car: Bee-Bowdy
Engine: blowd tree-fity
Transmission: sebin hunnerd
Axle/Gears: fo-tins
WOW...thanks JR305! I thought I was gonna have to shoot from the hip on this one...

thanks to RBob as well...

Here's a fuzzy picture for just for grins...
Attached Thumbnails Anyone have 55pph injectors on a 305?-305_block1.jpg  
Old 04-07-2003, 12:24 AM
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Car: 93 Caprice 9C1
Engine: L05
Transmission: 4L60
Axle/Gears: 3.42
Hey V8Astro Captain,
I have two BINs here, both from 1991 L03 equipped Caprices, both rated at 170hp, everything identical there. One is a regular civilian and the other is an LTZ. The civilian one has 2.56 gears, and the LTZ has 3.23. BPW in the regular caprice is set to 134; in the LTZ, 132. Do you find this interesting? I do, because if they really had 40lb/hr injectors like all L03s are supposed to, that calculates to around 181. HUGE difference, and, IMO, proof that at least these L03s came with 55lb/hr injectors.

Anyone know what the BPW is in an F-Body L03?
BTW, in my 9C1 L05, it was set at 120, and if I assume I have 68lb/hr injectors like I am supposed to have, that works out to 122 - in other words, dead on. The L03 is off by way too much to consider it a wash.

40 lb/hr always did seem too small, anyway.
Old 04-07-2003, 12:33 AM
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Sorry, I was looking at my stock bin. It is at 134. I ran the 55pph injectors at 110 @ 12psi. They will run horribly rich at 134.
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