TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Old Mar 15, 2007 | 03:54 PM
  #1  
335_GTA's Avatar
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From: wapak,ohio
Car: 1991 GTA trans am
Engine: 305 tpi
Transmission: 700r4
Axle/Gears: 3.73
357 build

Well I this is what I got for free

350 block bored .40 over completley redone (bearings,plugs...)
Redone crack
redone rods
new .40 pistons
mellings 480 lift camshaft

Will I be able to run a tpi set up on this if this is not a roller block?

I need some more info on this.
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Old Mar 15, 2007 | 03:59 PM
  #2  
xgtharo86x's Avatar
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From: Oviedo,Florida
Car: 86' Trans am
Engine: 85 LG4-non cc carb(building a 350)
Transmission: Rebuilt 700R4,vette servo,2200stall
Axle/Gears: 2.73 Posi
Free!!!
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Old Mar 15, 2007 | 08:15 PM
  #3  
335_GTA's Avatar
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From: wapak,ohio
Car: 1991 GTA trans am
Engine: 305 tpi
Transmission: 700r4
Axle/Gears: 3.73
Yea a friend of mine ownes a machine shop and had it all laying around and he said if I wanted it take it. So I was like what the hell.

The cam,rings,pistons are all new in the box.

The crank,block,rods are all redone.

What should I do with it??

Will a tpi set up work??
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Old Mar 15, 2007 | 08:54 PM
  #4  
xgtharo86x's Avatar
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From: Oviedo,Florida
Car: 86' Trans am
Engine: 85 LG4-non cc carb(building a 350)
Transmission: Rebuilt 700R4,vette servo,2200stall
Axle/Gears: 2.73 Posi
u should put it in your GTA..i dont know about the tpi setup you should go to the tpi section and ask
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Old Mar 15, 2007 | 09:40 PM
  #5  
335_GTA's Avatar
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Joined: Feb 2007
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From: wapak,ohio
Car: 1991 GTA trans am
Engine: 305 tpi
Transmission: 700r4
Axle/Gears: 3.73
This is the TPI section??

Well here is my prob. I dont want to run a carb, But will this motor work with a tpi setup?

Can I get some advice on this??
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Old Mar 15, 2007 | 10:45 PM
  #6  
Demon355's Avatar
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From: Toronto, Ont
Sure it will work with a TPI system. Why wouldn't it?
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Old Mar 15, 2007 | 10:46 PM
  #7  
1989GTATransAm's Avatar
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
I don't know why not. The only posible thing will be redrilling the four center bolts holes on the TPI intake manifold. This will be dependent on which heads you have. Not a big deal at all.
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Old Mar 16, 2007 | 10:07 AM
  #8  
335_GTA's Avatar
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From: wapak,ohio
Car: 1991 GTA trans am
Engine: 305 tpi
Transmission: 700r4
Axle/Gears: 3.73
I will be putting a set of ported 305 heads.

What all will I need to change ?

Injectors
prom
knock sensors

What else.

The heads are centerbolt heads, but what im worried about is the cam that came with it i dont know if it will work here look.


$89.95
5
287
287
230
230
.480
.480
107
111
2500-6000
22301



5- Hot Street Performance Code 5 cams have stong mid-range torque and top end power. They need a 9.5:1 or greater compression ratio, dual plane intake manifold with a 4BL carb, good dual point or electronic ignition and exhaust headers.



Does that mean that this cam wont work with tpi?? and only carb?
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Old Mar 16, 2007 | 10:15 AM
  #9  
Dyno Don's Avatar
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From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
You're right...it doesn't work with TPI (too big).
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Old Mar 16, 2007 | 02:05 PM
  #10  
335_GTA's Avatar
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From: wapak,ohio
Car: 1991 GTA trans am
Engine: 305 tpi
Transmission: 700r4
Axle/Gears: 3.73
So I would need a new cam ( prob just buy a whole valve train kit from comp)

Is that all?
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