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TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.

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Old 09-13-2006, 10:44 PM   #1
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Join Date: Sep 2000
Location: Chicago, IL
Posts: 1,370
Car: 86 Z28
Engine: 305
Transmission: 700r4
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thoughts on this tpi based combo
Roller 355
Vortec high lift modded heads
magnum roller tip 1.52 rockers
This Isky cam
Holley stealth ram
run by a mega squirt system
approx compression 9.5
will be doing headers and exhuast as well

anyone want to desktop dyno this for me and/or swing me a ballpark hp/tq estimate?

its a little smaller than the hotcam on intake and a lil larger on exhuast
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Daily driver- 1992 caprice w 350 tbi (for sale cheap)
Toy- 86 tpi305 z28
BMR panhard and LCA's
Disc rear and proportioning valve
UMI frame connectors
American racing 18in iroc replicas
Magnaflow stainless exhuast
Walbro 255 pump
Comming next:floors, 363(not 383), HSR, drop spindles, custom springs, Interior, paint (the usual)
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Old 09-13-2006, 11:53 PM   #2
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keep us updated, i plan to do a TPI based 383. im wondering how it will turn out. it will be TPI untill i can afford better heads and an LT1 intake conversion

good luck with it though man!
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SOLD: 91 Z28, original paint, 35% tint, 305 TPI, headers, high flow cat, American thunder cat back, shift kit, 3.73 gears, Lakewood adjustable panhard rod, TB cone filter, Superior Axle and Gear Evolution Series axle shafts, Energy Suspension poly trans mount, Jet Fan Switch, 255/50/16 Falken Ziex ZE-512.
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Old 09-14-2006, 01:28 AM   #3
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Location: Texas
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Car: 89 GTA Nighthawk
Engine: 389 CID Vortec TPI
Transmission: TCI 700R4 w/Vigilante

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Desktop DYNO says, 421 hp at 6500 rpm, 372 tq at 5500 rpm.
That's with stock flowing Vortec heads and small tube headers.
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389 CID Vortec TPI Engine, 428 HP, 507 TQ. Wheeler Vortec Heads, KB, Comp Cams, Crane, Eagle, SLP, Accel, Fluidamper, Vigilante, TCI, Spohn, Lakewood, Hedman, Flowmaster, Random Technologies, Be-Cool, Granatelli, Goodyear, Bosch, SDPC Intake, Texas Speed, Custom Chip and Ford Motorsport (30 lb Fuel Injectors).
11.894@114.3 mph.
Sacrificed to the God of Speed: (2) 700R4's, 3 TC's, 3 sets u-joints, one driveshaft, one camshaft, one bent rod, 3 blown head gaskets and two blown motors.
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Old 09-14-2006, 11:01 PM   #4
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Join Date: Sep 2000
Location: Chicago, IL
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Car: 86 Z28
Engine: 305
Transmission: 700r4
Axle/Gears: TBD

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thats about what i expected and wanted shooting for 335+ rwhp
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Daily driver- 1992 caprice w 350 tbi (for sale cheap)
Toy- 86 tpi305 z28
BMR panhard and LCA's
Disc rear and proportioning valve
UMI frame connectors
American racing 18in iroc replicas
Magnaflow stainless exhuast
Walbro 255 pump
Comming next:floors, 363(not 383), HSR, drop spindles, custom springs, Interior, paint (the usual)
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Old 09-16-2006, 12:58 AM   #5
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Car: 89 GTA Nighthawk
Engine: 389 CID Vortec TPI
Transmission: TCI 700R4 w/Vigilante

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Well, as the old saying goes, "their's no replacement for displacement. Bigger means more power, if you want more.
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389 CID Vortec TPI Engine, 428 HP, 507 TQ. Wheeler Vortec Heads, KB, Comp Cams, Crane, Eagle, SLP, Accel, Fluidamper, Vigilante, TCI, Spohn, Lakewood, Hedman, Flowmaster, Random Technologies, Be-Cool, Granatelli, Goodyear, Bosch, SDPC Intake, Texas Speed, Custom Chip and Ford Motorsport (30 lb Fuel Injectors).
11.894@114.3 mph.
Sacrificed to the God of Speed: (2) 700R4's, 3 TC's, 3 sets u-joints, one driveshaft, one camshaft, one bent rod, 3 blown head gaskets and two blown motors.
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Old 09-16-2006, 01:03 AM   #6
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Engine: 305
Transmission: 700r4
Axle/Gears: TBD

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yeah i've been contemplating the 363 stroker kit from speedomotive that plus that cam would be even more power. just gotta enlarge the budget a little lol.
__________________
Daily driver- 1992 caprice w 350 tbi (for sale cheap)
Toy- 86 tpi305 z28
BMR panhard and LCA's
Disc rear and proportioning valve
UMI frame connectors
American racing 18in iroc replicas
Magnaflow stainless exhuast
Walbro 255 pump
Comming next:floors, 363(not 383), HSR, drop spindles, custom springs, Interior, paint (the usual)

Last edited by redcamaro83; 09-16-2006 at 10:11 AM.
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Old 09-16-2006, 01:03 AM   #7
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but im wondering if the TPI will choke it, being a 383 and all...
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Old 09-19-2006, 01:03 AM   #8
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Join Date: Jun 2005
Location: Texas
Posts: 266
Car: 89 GTA Nighthawk
Engine: 389 CID Vortec TPI
Transmission: TCI 700R4 w/Vigilante

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A stock TPI will, get a high flowing base and some AS&M runners and you'll be good to go, or better yet a HSR.
__________________
389 CID Vortec TPI Engine, 428 HP, 507 TQ. Wheeler Vortec Heads, KB, Comp Cams, Crane, Eagle, SLP, Accel, Fluidamper, Vigilante, TCI, Spohn, Lakewood, Hedman, Flowmaster, Random Technologies, Be-Cool, Granatelli, Goodyear, Bosch, SDPC Intake, Texas Speed, Custom Chip and Ford Motorsport (30 lb Fuel Injectors).
11.894@114.3 mph.
Sacrificed to the God of Speed: (2) 700R4's, 3 TC's, 3 sets u-joints, one driveshaft, one camshaft, one bent rod, 3 blown head gaskets and two blown motors.
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Old 09-19-2006, 02:16 AM   #9
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nah im just going to do an LT1 intake conversion when i have the money. u guys are gonna hate me for telling u this, but im putting the TPI heads and intake on there (upgraded injectors tho) untill i have money to afford better stuff
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Old 09-19-2006, 12:43 PM   #10
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Join Date: Sep 2000
Location: Chicago, IL
Posts: 1,370
Car: 86 Z28
Engine: 305
Transmission: 700r4
Axle/Gears: TBD

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Quote:
Originally Posted by rwdtech View Post
but im wondering if the TPI will choke it, being a 383 and all...
dunno bout the 383 but deffinately not my 363. here is the kit Speed-O-Motive - CHEVY 1 PC SEAL 350 TO 363 STROKER CRANK KIT
__________________
Daily driver- 1992 caprice w 350 tbi (for sale cheap)
Toy- 86 tpi305 z28
BMR panhard and LCA's
Disc rear and proportioning valve
UMI frame connectors
American racing 18in iroc replicas
Magnaflow stainless exhuast
Walbro 255 pump
Comming next:floors, 363(not 383), HSR, drop spindles, custom springs, Interior, paint (the usual)

Last edited by redcamaro83; 08-03-2007 at 09:46 PM.
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Old 09-19-2006, 12:46 PM   #11
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Join Date: Sep 2000
Location: Chicago, IL
Posts: 1,370
Car: 86 Z28
Engine: 305
Transmission: 700r4
Axle/Gears: TBD

Classifieds Rating: (0)
Send a message via AIM to redcamaro83 Send a message via Yahoo to redcamaro83
Quote:
Originally Posted by redcamaro83 View Post
dunno bout the 383 but deffinately not my 363. here is the kit Speed-O-Motive - CHEVY 1 PC SEAL 350 TO 363 STROKER CRANK KIT
oh and it will be used with the HSR
__________________
Daily driver- 1992 caprice w 350 tbi (for sale cheap)
Toy- 86 tpi305 z28
BMR panhard and LCA's
Disc rear and proportioning valve
UMI frame connectors
American racing 18in iroc replicas
Magnaflow stainless exhuast
Walbro 255 pump
Comming next:floors, 363(not 383), HSR, drop spindles, custom springs, Interior, paint (the usual)
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Old 09-19-2006, 12:48 PM   #12
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Join Date: Sep 2000
Location: Chicago, IL
Posts: 1,370
Car: 86 Z28
Engine: 305
Transmission: 700r4
Axle/Gears: TBD

Classifieds Rating: (0)
Send a message via AIM to redcamaro83 Send a message via Yahoo to redcamaro83
double post
__________________
Daily driver- 1992 caprice w 350 tbi (for sale cheap)
Toy- 86 tpi305 z28
BMR panhard and LCA's
Disc rear and proportioning valve
UMI frame connectors
American racing 18in iroc replicas
Magnaflow stainless exhuast
Walbro 255 pump
Comming next:floors, 363(not 383), HSR, drop spindles, custom springs, Interior, paint (the usual)

Last edited by redcamaro83; 09-19-2006 at 12:53 PM.
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Old 09-19-2006, 12:48 PM
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