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06-18-2008, 09:37 PM
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#1
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12 Second Club
Join Date: Aug 2004
Location: Oradell
Posts: 8,368
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carb swap!
well i wanted to do an LT1 but timing and funds wont allow, sooo
im sick of my TPI giving me problems, i wanna go carb!
its going to be on a stock 305 motor, was originally a TBI.
wat kind of manifold, carb, distributor combo works best and is cost effective?
do i have to change out the tpi fuel pump or is there some type of regulator?
looking to start this project ASAP
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86 Camaro
88 Camaro
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06-18-2008, 10:00 PM
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#2
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Join Date: Jan 2007
Posts: 5,623
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if you want I have a CCQjet with intake and full UNCUT wire harness and ecu
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2000 Tahoe Z71 5.7
1982 Z28 Pacecar 305
1999 S10
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06-18-2008, 10:32 PM
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#3
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Join Date: Mar 2008
Location: Somerset, NJ
Posts: 4,223
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what kind of problems was your tpi giving you if you dont mind me asking
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Jon
1999 Trans am WS6
1996 Corvette LT4 6 speed
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06-18-2008, 11:48 PM
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#4
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,151
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I have a standrd performer intake here somewhere I'd sell you on the cheap - good for a 305. Standard head bolts.
Other things I think you'd need: a standard hei dizzy, fuel pressure regulator, fuel line, air cleaner housing & filter, t-stat housing & gasket, upper rad hose, throttle cable, choke wiring, maybe a vac fitting for the brake hose, a fan switch if yours is ecm controlled now, intake gaskets, coolant, ...I'll keep thinking about it....
But I'd rather have EFI. What's wrong?
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Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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06-19-2008, 07:22 AM
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#5
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12 Second Club
Join Date: Aug 2004
Location: Oradell
Posts: 8,368
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i never got the TPI to run right, replaced everything 3 times, im bored with it, i wanna learn about carbs, new project........
i took a summit catalog to work with me over night last night and picked out a few things, when i wake up later ill post up what i liked so far
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86 Camaro
88 Camaro
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97 Trans Am WS6
98 Blazer ZR2
00 Corvette
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06-19-2008, 01:12 PM
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#6
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12 Second Club
Join Date: Aug 2004
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__________________
86 Camaro
88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
07 Sublime Charger Daytona
10 Tahoe SSV
12 Tahoe LT
17 Malibu LT
Last edited by maroman88; 06-19-2008 at 04:12 PM.
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06-19-2008, 10:20 PM
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#7
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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You can remove any wires that come from the computer into the engine bay.
That ebay auction will work fine. I would stay away from Edelbrock carbs, go with a nice simple Holley. Also, that manifold you posted will work, but considering the cost, I would talk to Scott about what he'll let that Performer he's got go for.
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
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06-19-2008, 11:37 PM
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#8
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12 Second Club
Join Date: Aug 2004
Location: Oradell
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Quote:
Originally Posted by Tru2Chevy
You can remove any wires that come from the computer into the engine bay.
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yea thats what i was thinkin, i kinda feel bad destroying a perfect TPI harness tho lol but ya gotta do watcha gotta do!
Quote:
Originally Posted by Tru2Chevy
That ebay auction will work fine. I would stay away from Edelbrock carbs, go with a nice simple Holley. Also, that manifold you posted will work, but considering the cost, I would talk to Scott about what he'll let that Performer he's got go for.
- Justin
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ok but whats the deal with the "standard head bolts" is that for the pre-87 style heads? i was lookin for one for the 87-95 so i wouldnt have to drill out the bolt holes
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86 Camaro
88 Camaro
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97 Trans Am WS6
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00 Corvette
04 CTS-V
07 Sublime Charger Daytona
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Last edited by maroman88; 06-19-2008 at 11:38 PM.
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06-20-2008, 07:24 PM
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#9
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Join Date: Mar 2008
Location: Shreveport Louisianna Barksdale AFB
Posts: 1,415
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Im picking up a performer rpm intake. When I get that you can have my performer 2101 intake for 25 buck!
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USAF Jet Propulsion Specialist
1985 383 Camaro-nothing special I promise
2000 NBM z28-also nothing special
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06-20-2008, 09:05 PM
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#10
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Quote:
Originally Posted by maroman88
yea thats what i was thinkin, i kinda feel bad destroying a perfect TPI harness tho lol but ya gotta do watcha gotta do!
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Why destroy it? just pull it all out in one piece and keep the setup or sell it whole.
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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06-21-2008, 01:47 AM
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#11
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12 Second Club
Join Date: Aug 2004
Location: Oradell
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Quote:
Originally Posted by Tru2Chevy
Why destroy it? just pull it all out in one piece and keep the setup or sell it whole.
- Justin
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well arent i going to need some of the wires? like to the starter and alternator, AC and watever else, the whole thing that comes out of the driver side firewall... i was guna buy a cheapo harness from a carbed 3rd gen or even a TBI car and cut out what i dont need, this way i can sell the TPI harness with the TPI set up
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86 Camaro
88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
07 Sublime Charger Daytona
10 Tahoe SSV
12 Tahoe LT
17 Malibu LT
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06-21-2008, 07:09 PM
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#12
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
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Hmm....maybe the TPI harness is different than my LG4 harness. I was able to yank everything that comes from the computer in mine with no issues. The HVAC wiring and battery/starter/alternator stuff was separate.
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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06-21-2008, 10:10 PM
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#13
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Power Member
Join Date: Jul 2006
Location: Old Bridge, NJ
Posts: 2,415
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Yeah my tpi harness is all one peice to seperate it you would have to cut it up. I think you would be better making your own harness or buying a harness form a junk car or maybe a painless, either way your gonna have to custom wiring.
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06-21-2008, 11:15 PM
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#14
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Join Date: Sep 2007
Location: Poconos, PA
Posts: 606
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Quote:
Originally Posted by maroman88
i never got the TPI to run right, replaced everything 3 times, im bored with it, i wanna learn about carbs, new project........
i took a summit catalog to work with me over night last night and picked out a few things, when i wake up later ill post up what i liked so far
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i remember my '85 iroc... that tpi was PoS , given I beat the snot out of it but i blew through 3 egr valves .
Go Carb Conversion, be sure to match your intake and tuning
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'96 Z28 Vert M6 - UMI LCA's,UMI SFC's,BMR Panhard rod(soon to be UMI),UMI Short Shifter,Custom clutch, SLP CAI, SLP Strut Brace, Skip Shift Elim, MagnaFlow Catback,160 stat, Tb bypass, Air Foil ,prothane motor mounts & tranny mount, Stainless Radiator Shroud, Hooker headers with magnaflow hiflo cats, brand spanking new tranny, Umi torque arm , C5 brakes all 4 corners .
Soon to come... New paint , and glass .
Last edited by nj96z28; 06-21-2008 at 11:16 PM.
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06-22-2008, 06:38 PM
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#15
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12 Second Club
Join Date: Aug 2004
Location: Oradell
Posts: 8,368
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hmm would a 3rd gen carb'd fuel pump be the same as a TBI fuel pump... i know the TPI's like wayy to many psi so i gotta change it out
__________________
86 Camaro
88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
07 Sublime Charger Daytona
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06-22-2008, 07:21 PM
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#16
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
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3rd gen carb cars used a mechanical pump. You can leave the TPI pump in place, you just need a return style regulator.
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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06-22-2008, 07:54 PM
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#17
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12 Second Club
Join Date: Aug 2004
Location: Oradell
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so this lil guy? and what else should i invest in to make her work? i wanna place one order from summit for all the fuel needs
http://store.summitracing.com/partde...5&autoview=sku
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86 Camaro
88 Camaro
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97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
07 Sublime Charger Daytona
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06-24-2008, 02:22 PM
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#18
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12 Second Club
Join Date: Aug 2004
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hmm what size are the stock TPI rubber fuel lines, so i can buy the fittings for the regulator... -6AN?...
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86 Camaro
88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
07 Sublime Charger Daytona
10 Tahoe SSV
12 Tahoe LT
17 Malibu LT
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06-24-2008, 02:50 PM
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#19
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by maroman88
hmm what size are the stock TPI rubber fuel lines, so i can buy the fittings for the regulator... -6AN?...
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They are probably not AN threads. You are probably looking at 3/8" line size with NPT threads.
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06-24-2008, 05:31 PM
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#20
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
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Quote:
Originally Posted by WildBillyT
They are probably not AN threads. You are probably looking at 3/8" line size with NPT threads.
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Bingo.
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
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06-26-2008, 03:16 PM
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#21
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12 Second Club
Join Date: Aug 2004
Location: Oradell
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ok im at a loose here right now. im guna order the mallaroy 3 port regulator, its inlets are 3/8in NPT female, the stock TPI rubber lines are also 3/8in NPT female, now i cant find any NPT male to NPT male adapters anywhere........
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86 Camaro
88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
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07 Sublime Charger Daytona
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06-26-2008, 03:26 PM
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#22
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
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If it's rubber, can't you use a 3/8" NPT barbed fitting?
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06-26-2008, 03:43 PM
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#23
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12 Second Club
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it has 3/8in fittings on each end already and its at ~50psi
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86 Camaro
88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
07 Sublime Charger Daytona
10 Tahoe SSV
12 Tahoe LT
17 Malibu LT
Last edited by maroman88; 06-26-2008 at 03:44 PM.
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06-26-2008, 03:44 PM
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#24
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Ayatollah of Rock N Rolla / Admin
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06-26-2008, 03:51 PM
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#25
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12 Second Club
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niiiice thanks! couldnt find anything like it on summit
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86 Camaro
88 Camaro
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97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
07 Sublime Charger Daytona
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