Which injectors to buy?
Thread Starter
Junior Member
Joined: Dec 2003
Posts: 2
Likes: 0
From: Eastbay CA
Car: 1989 Firebird Formula
Engine: 5.7
Transmission: Automatic
Axle/Gears: 3.27
Which injectors to buy?
Hi Group it has been a long time since I have been on here. I need to replace my injectors on my 1989 Formula 5.7. Even though the car has only 44,000 original miles with some mods I was told the electronics went bad in them. I plan on selling the car so was wondering if the GB remanufactured ones would be okay. Thank you for any help and will put car in For Sale Section soon.
Raymond
Raymond
Senior Member
iTrader: (1)
Joined: Feb 2011
Posts: 670
Likes: 0
From: Round Rock, TX
Car: 1988 Firbird formula 350
Engine: 5.7L TPI
Transmission: 700R4
Axle/Gears: 3.27 Nine Bolt
Re: Which injectors to buy?
+1 on the Bosch III injectors. I put them on my Formula 350 and I'm happy with them.
Southbay and the Bosch 3's have my vote 
Supreme Member
Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: Which injectors to buy?
Southbay is good to deal with and great prices too. Discounts for TGO members.
Joined: Feb 2013
Posts: 153
Likes: 0
From: Tijeras, NM
Car: 89 Black GTA
Engine: 'close to' stock 5.7 but trending>>
Transmission: 700
Axle/Gears: 3.27
Re: Which injectors to buy?
whats GB?
I just installed Bosch 3's, rebuilt from FIC. Southbay is great too. Either way, if you have the oem multecs, 1989 was a bad year for them (they arent ethanol tolerant). New injectors should make you smile.
I just installed Bosch 3's, rebuilt from FIC. Southbay is great too. Either way, if you have the oem multecs, 1989 was a bad year for them (they arent ethanol tolerant). New injectors should make you smile.
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Thread Starter
Junior Member
Joined: Dec 2003
Posts: 2
Likes: 0
From: Eastbay CA
Car: 1989 Firebird Formula
Engine: 5.7
Transmission: Automatic
Axle/Gears: 3.27
Re: Which injectors to buy?
GB is a brand that sells remanufactured injectors. Original injectors in car hard to believe with only 44,0000 original miles the electronics went bad.
Joined: Dec 2004
Posts: 16,754
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Which injectors to buy?
The stock Multecs coil windings are cooled bye fuel. The coating on the windings are effected with the ethanol and causes the coil windings to short out and may shut off your injector driver in the ecm and stop all injector pulse. Throw them in the garbage
Sponsor
Joined: Nov 2008
Posts: 1,528
Likes: 49
From: Rockville Centre, NY
Re: Which injectors to buy?
Ray 350 Formula if you decide to purchase from us,we will do our best to help you in any way. If you have any questions or concerns, give us a shout.
Member
iTrader: (2)
Joined: Mar 2013
Posts: 260
Likes: 1
From: Close to Boggstown Indiana ( out in the middle of a corn field)
Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Which injectors to buy?
Member
iTrader: (1)
Joined: Aug 2003
Posts: 138
Likes: 1
From: NW Montana
Car: 1985 Volvo turbodiesel
Engine: 1989 305 TPI in the Volvo
Transmission: 1990 700r4
Axle/Gears: 3.73 Dana 30
Re: Which injectors to buy?
I just put the Bosch 3's in my 89 305. Car was only running on 7 cylinders, found out #1 wasn't firing. Switched injector plugs and it was plug dependent not injector. Figured I had a bad injector connector, got the noid light out and it tested fine. Turns out the contacts on the connector were not making a good connection to the injector prongs. bent the contacts inside the connector and all good. heads up for you guys
Car runs smooth and strong now.
Car runs smooth and strong now.
Member
iTrader: (2)
Joined: Sep 2007
Posts: 128
Likes: 0
Car: Today? 98 GMC Sonoma
Engine: Seriously? The Sonoma has a TPI 305
Transmission: T56
Axle/Gears: 7.625/4.10
Re: Which injectors to buy?
I just received my Bosch 3's from South Bay Saturday. Put 'em in last night, but haven't started it yet due to the transmission being apart. I'm hoping for an 8 cylinder ride this time... LOL
South Bay shipped mine fast too, so that was a plus.
South Bay shipped mine fast too, so that was a plus.
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