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

L03 forged internals

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Old Mar 24, 2008 | 09:19 AM
  #1  
Timothayyy's Avatar
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From: Virginia
Car: 1992 Firebird
Engine: 350TBI
Transmission: 700r4
Axle/Gears: Ford 9in 4.10
L03 forged internals

Who makes a kit and any item numbers?

Also how many hours to install?

Thanks
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Old Mar 24, 2008 | 09:32 AM
  #2  
slow_90firebird's Avatar
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From: Manchester, CT + Nashua, NH
Car: 90 Firebird Formula
Engine: LO3
Transmission: T5
Axle/Gears: 3.08 one wheel peel
Re: L03 forged internals

If ur gonna spend all the tons of hours and money to re-build a motor, you might as well get a 350 roller, and drop your TBI on it.

I have never built a motor before, but I still have a pretty good idea of what kind of time, effort, money, and machine work goes into them. You would need to get an oversize kit, have the motor bored and honed, all kinds of stuff. Then if you want blueprint and balance, that is a huge cost addition, too!

Maybe you can understand why a 350 would be beneficial? Becuase you can get a decent block to start with for $50-100, and it would be better to fresh that up, than to fresh your 305.

Actually, if I was gonna do all that work, I would probably drop the little extra coin, for a 383 rotating kit. There is your "forged internals" along with 33 extra cubes, and alot of torque!
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Old Mar 24, 2008 | 09:35 AM
  #3  
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From: Joliet IL
Car: 89 Camaro Convert,89 Camaro hardtop
Engine: 305 and a 357
Transmission: 700R4,T5
Axle/Gears: 4.10's and 3.43's
Re: L03 forged internals

Originally Posted by Timothayyy
Who makes a kit and any item numbers?

Also how many hours to install?

Thanks
not to be a **** but do you really need forged internals, also i looked at your mod list and saw lt4 hot cam and did not see anything about chip tuning if i were you i would forget forged internals and learn to burn chips imo also you'll need heads to go with that cam.
----------
Originally Posted by slow_90firebird
If ur gonna spend all the tons of hours and money to re-build a motor, you might as well get a 350 roller, and drop your TBI on it.

I have never built a motor before, but I still have a pretty good idea of what kind of time, effort, money, and machine work goes into them. You would need to get an oversize kit, have the motor bored and honed, all kinds of stuff. Then if you want blueprint and balance, that is a huge cost addition, too!

Maybe you can understand why a 350 would be beneficial? Becuase you can get a decent block to start with for $50-100, and it would be better to fresh that up, than to fresh your 305.

Actually, if I was gonna do all that work, I would probably drop the little extra coin, for a 383 rotating kit. There is your "forged internals" along with 33 extra cubes, and alot of torque!

fyi you can buy a stock bore forged rotating kit but why would you want to im not going to bash that you want to do this to a 305 but its all preference

Last edited by markymarco; Mar 24, 2008 at 09:37 AM. Reason: Automerged Doublepost
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Old Mar 24, 2008 | 09:59 AM
  #4  
Timothayyy's Avatar
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From: Virginia
Car: 1992 Firebird
Engine: 350TBI
Transmission: 700r4
Axle/Gears: Ford 9in 4.10
Re: L03 forged internals

Originally Posted by markymarco
not to be a **** but do you really need forged internals, also i looked at your mod list and saw lt4 hot cam and did not see anything about chip tuning if i were you i would forget forged internals and learn to burn chips imo also you'll need heads to go with that cam.
----------



fyi you can buy a stock bore forged rotating kit but why would you want to im not going to bash that you want to do this to a 305 but its all preference
I was thinking of going with forged internals so I could run high boost with NOS. But if its extremely pricey ill just stick to lower boost on stock internals, lol.

Also for the computer tuning I got EBL Flash, no need to burn chips

One other kinda off topic question, is this the proper Throttle Body for these engines?
http://www.holley.com/500-6S.asp
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Old Mar 24, 2008 | 10:02 AM
  #5  
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From: Joliet IL
Car: 89 Camaro Convert,89 Camaro hardtop
Engine: 305 and a 357
Transmission: 700R4,T5
Axle/Gears: 4.10's and 3.43's
Re: L03 forged internals

you would be better off getting a 454 tbi also it just bug's me when people say NOS its nitrous NOS is a brand lol.
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Old Mar 24, 2008 | 10:05 AM
  #6  
Timothayyy's Avatar
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From: Virginia
Car: 1992 Firebird
Engine: 350TBI
Transmission: 700r4
Axle/Gears: Ford 9in 4.10
Re: L03 forged internals

Well im planning on getting the NOS brand nitrous kit
So all good?

I would get the 454 throttle body but i have no idea on what injectors i need especially with that walbro 255 i got
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Old Mar 24, 2008 | 10:17 AM
  #7  
markymarco's Avatar
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From: Joliet IL
Car: 89 Camaro Convert,89 Camaro hardtop
Engine: 305 and a 357
Transmission: 700R4,T5
Axle/Gears: 4.10's and 3.43's
Re: L03 forged internals

80 pph should do it i believe they came in the 90 ss454
----------
but your going to have a tuning nightmare trying to tune for nitrous and turbo lol.

Last edited by markymarco; Mar 24, 2008 at 10:18 AM. Reason: Automerged Doublepost
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Old Mar 24, 2008 | 10:26 AM
  #8  
Timothayyy's Avatar
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Senior Member
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Joined: Dec 2007
Posts: 990
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From: Virginia
Car: 1992 Firebird
Engine: 350TBI
Transmission: 700r4
Axle/Gears: Ford 9in 4.10
Re: L03 forged internals

Naw, ima just get nitrous. No turbo.

I might just take it to a shop to get tuned, im not sure.
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Old Mar 24, 2008 | 10:38 AM
  #9  
markymarco's Avatar
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Joined: Apr 2006
Posts: 400
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From: Joliet IL
Car: 89 Camaro Convert,89 Camaro hardtop
Engine: 305 and a 357
Transmission: 700R4,T5
Axle/Gears: 4.10's and 3.43's
Re: L03 forged internals

my bad i was reading a different post before i posted on this one
----------
the ebl is awesome i got the flash one 2 if you start to get your current setup dialed in as best you can it will only make your new setup less of a headache

Last edited by markymarco; Mar 24, 2008 at 10:40 AM. Reason: Automerged Doublepost
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Old Mar 26, 2008 | 10:07 PM
  #10  
S105.7's Avatar
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Joined: Dec 2004
Posts: 210
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From: Rhode Island
Car: '87 S10 Blazer & '91 RS
Engine: L98 & L03
Transmission: 700R4 & T5
Axle/Gears: 10 Bolt/3.73/3.42
Re: L03 forged internals

does he really need a 454 TBI for a 305? why not just add 61# 350 injectors, like i did so you can turn more than 4000rpm without the injectors going static.
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