TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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New to TPI need some tips

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Old Jul 10, 2004 | 10:51 PM
  #1  
Dennis91RS's Avatar
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Joined: May 2002
Posts: 582
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From: Solomons Island Maryland
Car: 1991 Camaro RS
Engine: 4 bbl 305
Transmission: 700R4
New to TPI need some tips

as my sign says i started on my IROC its a 305 t top 700 R4 car

so far i put Accel Super Stock Wires on the car

now my two questions are
1.) what times will this turn in stock form

2.) is does the same plan of attack work on TPI as it did on my LO3 with the full exhuast,chips,etc?
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Old Jul 11, 2004 | 01:12 AM
  #2  
5SIZ's Avatar
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From: Tucson
Car: 1987 IROC-Z
Engine: 305 TPI
Transmission: T5
305 auto w/ the peanut cam butt stock I would guess mid to low 15's depending on the mileage & how well kept it's been "oil changes, spark plugs, etc."


And as for the whole treat it like an LO3 I wouldn't know but the basic mods like exaust, headers etc. are always a must.
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Old Jul 11, 2004 | 02:27 AM
  #3  
jfreeman74's Avatar
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From: Flowery Branch, GA
Car: 1985 Iroc-Z
Engine: 1 BA 305 TPI
Transmission: Probuilt 700R4 - 2800 Stall Midwest
Axle/Gears: 3.42
What year is it? What gears are in it? See my sig for things that I have done to my 305.
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Old Jul 11, 2004 | 09:54 AM
  #4  
sten's Avatar
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Joined: Jul 2004
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From: Medicine Hat, Ab Can
Hey, impressive numbers for a 305. I'm new to the TPI thing, my
L98 dyno'd @243rwhp, first time at the track I couldn't break into the 14's. I have modified everything except the injectors and tb.
I'm looking for answers, even with stock injectors and tb I should easily run low 14's!
Here is what I got
Balanced 355 in, 10:1 kb's hyputechs, 480 lift comp cam, polished chambers and exhaust ports, Z-28 springs 2 1/2 headers msd wires, slp runners & air foil, cold air intake, custom ecm
2500stall/ 700r4
3.42 posi
3650lbs with driver
2.18 60 (street tires)
9.8 1/8
15.1 @ 91 @ 2500ft track
best gtech 14.98 @ 94.5 after ecm tuning. ***4400rpm shifts***
HELP
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Old Jul 11, 2004 | 11:02 AM
  #5  
TPI-Formula350-'s Avatar
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Joined: Aug 2003
Posts: 1,644
Likes: 4
From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
Try some of the things I have listed below in my sig . They have gotten me into the low 13's without a cam, head change
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Old Jul 11, 2004 | 03:29 PM
  #6  
5SIZ's Avatar
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Joined: May 2002
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From: Tucson
Car: 1987 IROC-Z
Engine: 305 TPI
Transmission: T5
same for my sig., I'm gonna be running mid 12's w/ the nitrous very soon.
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Old Jul 11, 2004 | 03:49 PM
  #7  
Dennis91RS's Avatar
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Senior Member
 
Joined: May 2002
Posts: 582
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From: Solomons Island Maryland
Car: 1991 Camaro RS
Engine: 4 bbl 305
Transmission: 700R4
cool thnx guys

as far as the rear goes im not sure what gear it has but it does leave two black marks unlike my RS that leaves one dorky one

its a mass air car with the old style bolt heads on it

if it runs 15.5s that would be cool cause it wouldnt take much i wouldnt think to put it on down into the 14s maybe even 13s

the car has 113,000 on it all original car, the guy i got it from took fairly good care of it as far as maintanance goes but the rest of the car is so/so

thnx again guys and ill keep posting the build up
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Old Jul 11, 2004 | 05:14 PM
  #8  
5SIZ's Avatar
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Joined: May 2002
Posts: 1,512
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From: Tucson
Car: 1987 IROC-Z
Engine: 305 TPI
Transmission: T5
my motor is pushing 193,000 miles bebe. still kicking euro butt!
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Old Jul 11, 2004 | 06:40 PM
  #9  
305RSlc's Avatar
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Joined: Jul 2003
Posts: 646
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From: P'cola
Car: 1991 Z28 Camaro
Engine: L98
Transmission: 700R4 that will magically turn into a 6 speed one day.
Originally posted by sten
Hey, impressive numbers for a 305. I'm new to the TPI thing, my
L98 dyno'd @243rwhp, first time at the track I couldn't break into the 14's. I have modified everything except the injectors and tb.
I'm looking for answers, even with stock injectors and tb I should easily run low 14's!
Here is what I got
Balanced 355 in, 10:1 kb's hyputechs, 480 lift comp cam, polished chambers and exhaust ports, Z-28 springs 2 1/2 headers msd wires, slp runners & air foil, cold air intake, custom ecm
2500stall/ 700r4
3.42 posi
3650lbs with driver
2.18 60 (street tires)
9.8 1/8
15.1 @ 91 @ 2500ft track
best gtech 14.98 @ 94.5 after ecm tuning. ***4400rpm shifts***
HELP
Hmm, how are you hooking up? I'm not too great on TPI, but with those mods and hp #, you should be in the 14's. Throw on some SFC, better LCA and better torque arm and it should help.
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