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

Whats the first mod that you would suggest for a 305 tbi w/ a T-5

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Old Feb 16, 2001 | 10:10 PM
  #51  
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I would have to agree with 91bird.

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1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!
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Old Feb 16, 2001 | 11:26 PM
  #52  
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<font face="Verdana, Arial" size="2">Originally posted by big tex:
I would have to agree with 91bird.

</font>
i'll second that
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Old Feb 17, 2001 | 03:12 AM
  #53  
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lol aright guys dont take my word for it. Mod the hell out of it. If u ever plan to sell it let me know what u got for it.

now lets get back to the origional topic. I would recomend gears as a first mod for a 305 TBI 5 spd. BTW BIGTEX did u get the 5 spd conversion done yet? not trying to be a smart *** i was JW
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Old Feb 17, 2001 | 09:56 AM
  #54  
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From: Davison / Troy ,Michigan
Car: 1991 Pontiac Firebird
Engine: 3.8
Transmission: 700r4
Axle/Gears: Dana 60
Your the devil onefine8t9, look at your posts numbers!
I would have to agree with the devil though, Gears or exaust/headers is a great first time mod.

------------------
Eric Natzke
91 Firebird 305 TBI
"It Ain't Stock"
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html
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Old Feb 17, 2001 | 01:01 PM
  #55  
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na, i am waiting on the starter to get in. after that, its going to the shop. the guy doing it said he would do the swap for 350 bones. is that good. thanks for getting back on the original topic. I think that I will do the gears first. with gears and a stick shift, will i be able to beat a 305TPI. thanks

steven

------------------
1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!
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Old Feb 17, 2001 | 01:08 PM
  #56  
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i would definatly do headers and exhust, maybe a cam if your up to it and a intake. depending on your curent gears i would do a swap. i mean if oyu have 2.78s or something gay like that i would swap em out, but if you have 3.42s i would just do the exhust cam and intake

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when the green flag drops the bull$hit stops

Curent: 350,performer RPM intake ,650dp, 700r4, headers, 3inch exhast
Spring 01: 406, Comp 282 solid cam, 2400 stall converter, every thing else the same.
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Old Feb 17, 2001 | 02:58 PM
  #57  
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BIGTEX i would say a 3.73 rear gear would be great with a 5 spd due to the low 5th gear ratio. With a 5 spd and gears u will be able to take out a 305 TPI. If its a 305 TPI 5 spd u might have a litle more trouble but certainly a run for the money.
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Old Feb 17, 2001 | 03:00 PM
  #58  
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BTW 350$ to drive ur car in as an auto and drive it out as a 5 spd is a great deal.

O ya eric, i had to post an extra one last night couse i didnt wanna be stuck with the 666 #
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Old Feb 17, 2001 | 03:26 PM
  #59  
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does edelbrock make a good cam or is the LT4 cam better. Will I have to do any PROM work if I get either of the cams mentioned above.

------------------
1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!
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Old Feb 17, 2001 | 04:51 PM
  #60  
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im not exactly sure on cam swap and which one is the best. I know crane cams makes a great cam for computer controled cars like ours. Its the compucam series cam shafts. take a look at those, it might be worth it.
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Old Feb 18, 2001 | 02:51 AM
  #61  
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8T9...thanks for the cam info...
i have heard that edelbrock tbi manifold is not the best for performance. I am looking for some low end torque...holly or weiand manifold? I suspect that there is a two barell adapter for an application like this.

------------------
1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!
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Old Feb 18, 2001 | 03:22 AM
  #62  
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the edelbrock intake is all about torque. If your "performance" is torque oriented than get the edelbrock. If it is HP oriented with new cam and more flow, then get a single plane with an adapter.

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-Tas
'89 Formula WS-6
[soon to be Torch Red with black hood and headlights =) ]

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Super GRK_Taz World
EFI & Intake Options
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Old Feb 18, 2001 | 04:13 PM
  #63  
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Tas,

that torque will transfer into hp wont it? Maybe I just don't know what the hell I'm talking about. I'm looking for a manifold that will (along with other goodies) put me into the low 13's.

------------------
1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!
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Old Feb 18, 2001 | 04:50 PM
  #64  
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torque turns into HP when you let it breath. For example. the 1991 L98 Vette had about 245HP and 350TQ. By changing to a short runner intake in the LT1 they turned the 20TQ they lost into about 50HP. 300HP 330 TQ.

for low 13s you'll definately need cam, heads, and exaust.

go make another post this one is too cluttered now.
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Old Mar 10, 2001 | 12:38 AM
  #65  
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From: Oxford,MI,USA
Best first mod?Exhuast(headers back,keep your flowmaster).
MY car looks bone stock on the outside.What I have done enhances the performance of a seriously restricted sports car.The RS a rocket waiting to be tapped and gives us gearheads something to do.
It's value is reletive of the fellow who looks at it and says "that bad".Usually the appearance of my modfied LO3 knocks poeple out(it looks like an old early 70's motor stuck in 90's body).
I have been offered $8000.00 for the ride and turned it down.The guy who offered said he just loved the way it sounded(like a 69 with chambered pipes).SO THERE!
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Old Mar 10, 2001 | 08:04 AM
  #66  
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From: Davison / Troy ,Michigan
Car: 1991 Pontiac Firebird
Engine: 3.8
Transmission: 700r4
Axle/Gears: Dana 60
LoL. Monster this topic was so old. HOW DID U FIND IT?! Haha

------------------
Eric Natzke
91 Firebird 305 TBI
"It Ain't Stock"
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html
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