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

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Old Mar 22, 2004 | 05:52 PM
  #1  
kamaroirock's Avatar
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Car: 02 z28, 03 wrangler sport
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formula tbi

was the formulas tbi motor any diffrent from the tbi in my rs? i didnt think so but i have hear diffrently. i know they have the same hp rating but i heard that the formula had a more restrictive intake or something. is this true?
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Old Mar 22, 2004 | 06:45 PM
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From: Greenville, SC
Car: 1991 Chevy Camaro
Engine: 305 TBI
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Axle/Gears: 3.42
Now, I am by far no expect on Firebirds, but I would bet that it is exactly the same as the Camaro. I don't see why GM would go to the trouble to vary the two at all (engine wise). Someone should on this forum should know for sure, though.
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Old Mar 22, 2004 | 06:46 PM
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Car: '90 RS
Engine: 377 LSX
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They are the exact same engines. The camaros and birds always got the same engine options over their 35 year tenure.
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Old Mar 22, 2004 | 07:15 PM
  #4  
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From: Hurlburt Field
Car: 84 Z28, '15 Colorado
Engine: L69
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Axle/Gears: 3.73
Not true, the 67-69s didnt.
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Old Mar 22, 2004 | 07:34 PM
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Iroc is correct.

My first car was a '67 Firebird and it had a 326 in it. The Camaros' for that year had a 327.

I think a 350 was available for both but the Firebird could be had with a 400 and not the Camaro. I don't think the 396 was available for the Camaro in '67 but it may have been availablel in '68 and '69.

Bill
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Old Mar 22, 2004 | 07:52 PM
  #6  
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by azvolfan
Iroc is correct.

My first car was a '67 Firebird and it had a 326 in it. The Camaros' for that year had a 327.

I think a 350 was available for both but the Firebird could be had with a 400 and not the Camaro. I don't think the 396 was available for the Camaro in '67 but it may have been availablel in '68 and '69.

Bill
I stand corrected. Good info guys. Gotta keep me striahgt sometimes For any 3rd or 4th gen though the options were the same.
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Old Mar 22, 2004 | 08:36 PM
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Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
ok thats what i thought but i just had to check. thanx
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Old Mar 22, 2004 | 09:20 PM
  #8  
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They started to go standard with the 3rd gens. The first and 2nd gens had slightly different options. The Trans Ams always seem to have the bigger engine (although not necessarily better).

For the 2nd gens there was a 6.6 T/A available for Pontiac (which I believe was acutally an Oldsmobile 403) but Chevy used the 350 for the Z28. There was also a 455 available for the Trans Am in the early to mid 70's. But Chevy only went as large as the 396.

I'll stop here since this is not the history board.
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Old Mar 22, 2004 | 10:04 PM
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From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
Well, just to fix a bit of info before we stop talking about it, there was a pontiac 400 (nice) and then during the last few years of the second gen's, some t/a's came with the oldsmobile 403 (puke)..
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