OEM Fuel Injectors?
#2
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Re: OEM Fuel Injectors?
Looks like rochesters, see if you can identify the #s here
http://www.juscuzmotorsports.com/injector.html
http://www.juscuzmotorsports.com/injector.html
#6
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Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
Re: OEM Fuel Injectors?
they could be either Bosch or Lucas injectors. both were used from 85 to 88.
they don't short out as bad as the Multecs, but are more prone to clogging.
if your having problems with them, a set of bosch 3s from southbay or FIC is a nice up grade.
they don't short out as bad as the Multecs, but are more prone to clogging.
if your having problems with them, a set of bosch 3s from southbay or FIC is a nice up grade.
#7
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Re: OEM Fuel Injectors?
I don't have any idea as to what kind of injectors those are. But I will say you have mad photographic skills. Nice to see someone that knows how to use a digital camera.
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#8
Re: OEM Fuel Injectors?
It's has 12 Mega Pixels so that's why the pic. is so clear. Specs. are found here http://www.digitalrev.com/en/Kodak-E...mera-2995.html
#9
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Re: OEM Fuel Injectors?
If you have any questions you can give us a call at 516-492-6504
www.southbayfuelinjectors.com
#10
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Car: 89 iroc
Engine: l98
Transmission: tremec
Re: OEM Fuel Injectors?
actually that injector is the factory OEM injector installed in 85-88 305 LB9's.. The GM part number is 10108480. The internet has the data as 17.9 at 43.5.. That is incorrect. The injector is 17.9 at 35psi and 19 at 43.5. Can't trust the internet. But you can trust GM assembly and spec sheets.
#11
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Re: OEM Fuel Injectors?
actually that injector is the factory OEM injector installed in 85-88 305 LB9's.. The GM part number is 10108480. The internet has the data as 17.9 at 43.5.. That is incorrect. The injector is 17.9 at 35psi and 19 at 43.5. Can't trust the internet. But you can trust GM assembly and spec sheets.
If you enlarge the pic, you will see this exact number on the side of the injector....it is a lucas and this is what i came up with. Either way the difference between 17.9 (18.0) and 19lb is minimal.
5720D780 = 17.9lbs 43.5psi 3.0 bar---Chevy v8-5.0l
#13
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Re: OEM Fuel Injectors?
You are welcome,,,,,,the cost for a set of (8) 22lb bosch lll's is $160 we will give you free shipping. They will be a direct fit. If you are interested in purchasing from us we can offer them with the "double o-ring setup" or with our new design adapter. Either one will be a perfect fit. We also carry them in 19lb. If you have any questions give us a call at 516-492-6504
#14
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Car: 1986 Z-28
Engine: 350 TPI
Transmission: 700-R4
Re: OEM Fuel Injectors?
I have the same injectors in my 86 Z-28 and I think they originally came out of the 305 that was replaced in mine too, I am upgrading as soon as possible due to the fact of the resistance being 16.5- 16.8 on all of them when the book calls for 11-14.
#15
Re: OEM Fuel Injectors?
You are welcome,,,,,,the cost for a set of (8) 22lb bosch lll's is $160 we will give you free shipping. They will be a direct fit. If you are interested in purchasing from us we can offer them with the "double o-ring setup" or with our new design adapter. Either one will be a perfect fit. We also carry them in 19lb. If you have any questions give us a call at 516-492-6504
#16
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Re: OEM Fuel Injectors?
ABSOLUTELY NOT!!! We stand behind our products 100%. All of our injectors come with a 3 year warranty. When it comes to the bosch lll's i must tell you that we have NEVER had a complaint or a return to date!! Besides we flowtest everyone of our injectors so we are 100% confident that we are selling a quality product!
#17
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Car: 89 Firebird Formula
Engine: 305 Vortec, Single-plane, 4 barrel
Transmission: T5, soon 700R4
Axle/Gears: 88 10 Bolt, Disc, Auburn, 3.23
Re: OEM Fuel Injectors?
Check a different book Sir.
#18
Re: OEM Fuel Injectors?
ABSOLUTELY NOT!!! We stand behind our products 100%. All of our injectors come with a 3 year warranty. When it comes to the bosch lll's i must tell you that we have NEVER had a complaint or a return to date!! Besides we flowtest everyone of our injectors so we are 100% confident that we are selling a quality product!
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Car: 1988 Camaro IROC-Z/28
Engine: L98 5.7L T.P.I, stroked 383
Transmission: turbo hydro-matic 700R4
Axle/Gears: Borg Warner 9 boltG80 2.77
Re: OEM Fuel Injectors?
southbay I have a 383 stoker and am planning on throwing in a weiand stealth ram intake,
http://www.summitracing.com/parts/WND-7540/?rtype=10
and holley fuel rails,
http://www.summitracing.com/parts/HLY-534-186/
what would be a good sized injector for good flow for this system? or you got anything in stock for good price that would be good to make this a legit setup? thanks much appreciated.
http://www.summitracing.com/parts/WND-7540/?rtype=10
and holley fuel rails,
http://www.summitracing.com/parts/HLY-534-186/
what would be a good sized injector for good flow for this system? or you got anything in stock for good price that would be good to make this a legit setup? thanks much appreciated.
#21
Re: OEM Fuel Injectors?
southbay I have a 383 stoker and am planning on throwing in a weiand stealth ram intake,
http://www.summitracing.com/parts/WND-7540/?rtype=10
and holley fuel rails,
http://www.summitracing.com/parts/HLY-534-186/
what would be a good sized injector for good flow for this system? or you got anything in stock for good price that would be good to make this a legit setup? thanks much appreciated.
http://www.summitracing.com/parts/WND-7540/?rtype=10
and holley fuel rails,
http://www.summitracing.com/parts/HLY-534-186/
what would be a good sized injector for good flow for this system? or you got anything in stock for good price that would be good to make this a legit setup? thanks much appreciated.
#22
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Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
Re: OEM Fuel Injectors?
Chevy, if the injectors your brother in law has are factory GM Bosch or Lucas, they would need to be cleaned. it would probably be cheaper just to replace them with the bosch 3s.
and if they are multec injectors, well i wouldn't waste time putting them in.
the multecs are that bad.
and if they are multec injectors, well i wouldn't waste time putting them in.
the multecs are that bad.
#23
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Re: OEM Fuel Injectors?
southbay I have a 383 stoker and am planning on throwing in a weiand stealth ram intake,
http://www.summitracing.com/parts/WND-7540/?rtype=10
and holley fuel rails,
http://www.summitracing.com/parts/HLY-534-186/
what would be a good sized injector for good flow for this system? or you got anything in stock for good price that would be good to make this a legit setup? thanks much appreciated.
http://www.summitracing.com/parts/WND-7540/?rtype=10
and holley fuel rails,
http://www.summitracing.com/parts/HLY-534-186/
what would be a good sized injector for good flow for this system? or you got anything in stock for good price that would be good to make this a legit setup? thanks much appreciated.
#24
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Re: OEM Fuel Injectors?
Chevy, if the injectors your brother in law has are factory GM Bosch or Lucas, they would need to be cleaned. it would probably be cheaper just to replace them with the bosch 3s.
and if they are multec injectors, well i wouldn't waste time putting them in.
the multecs are that bad.
and if they are multec injectors, well i wouldn't waste time putting them in.
the multecs are that bad.
besides, i just posted a sale for the members of the forum ...use the promotional code: TG11 and get 10% off on most of our products and services!!
#25
Re: OEM Fuel Injectors?
Chevy, if the injectors your brother in law has are factory GM Bosch or Lucas, they would need to be cleaned. it would probably be cheaper just to replace them with the bosch 3s.
and if they are multec injectors, well i wouldn't waste time putting them in.
the multecs are that bad.
and if they are multec injectors, well i wouldn't waste time putting them in.
the multecs are that bad.
#27
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Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
Re: OEM Fuel Injectors?
its hard to say just how much of a difference you'll see. it depends how bad of condition your injectors are in. add in you have a 350 running on 305 injectors and im sure you will notice a nice change.
the last set of bosch 3s i put in were for a 91 vette that was towed in from another shop. the multecs it had were so bad, it was causing the car to be hard to start and it was undriveable. that was after the other shop had already replaced 2 injectors.
after i got the bosch 3s in, it fired right up and ran perfectly.
the owner said he couldn't remember it ever running that good.
the last set of bosch 3s i put in were for a 91 vette that was towed in from another shop. the multecs it had were so bad, it was causing the car to be hard to start and it was undriveable. that was after the other shop had already replaced 2 injectors.
after i got the bosch 3s in, it fired right up and ran perfectly.
the owner said he couldn't remember it ever running that good.
#28
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Re: OEM Fuel Injectors?
Due to the 4 spray pattern and the improvement in the fuel atomization, you should see an improvement in the overall performance with the bosch lll's....improved acceleration, idle, fuel consumption, etc.
#32
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Car: 1986 Z-28
Engine: 350 TPI
Transmission: 700-R4
Re: OEM Fuel Injectors?
southbay I have a 383 stoker and am planning on throwing in a weiand stealth ram intake,
http://www.summitracing.com/parts/WND-7540/?rtype=10
and holley fuel rails,
http://www.summitracing.com/parts/HLY-534-186/
what would be a good sized injector for good flow for this system? or you got anything in stock for good price that would be good to make this a legit setup? thanks much appreciated.
http://www.summitracing.com/parts/WND-7540/?rtype=10
and holley fuel rails,
http://www.summitracing.com/parts/HLY-534-186/
what would be a good sized injector for good flow for this system? or you got anything in stock for good price that would be good to make this a legit setup? thanks much appreciated.
#33
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Car: 85 Z28 T-Top 36mm sway & wonderbar
Engine: TPI L98 350 W/85 Vette Stage II ECM
Transmission: W/C T-5, alum drive shaft
Axle/Gears: 9 bolt posi, 3:27, PBR's, BB LS1's
Re: OEM Fuel Injectors?
I'm running a 87 version HO 350 crate with my original TPI setup off of my 305 with 19lbs injectors. I still have the the original ECU and the way I understand , the MAF meters the air flow and sends the data to the ECU and the timing cycle changes for the injectors (19lbs to stay open longer for 350 engine) is this true? I have to admit that the idle is a little rough, but I think that it is due to the fact that they have never been serviced in 25 years. I did change the knock sensor and the ESC for a 350 engine and I am thinking of going to the Bosch III's injectors. Do they make these in a 19lb injector?
Last edited by 85 ZXX; 02-06-2010 at 02:34 AM.
#34
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Re: OEM Fuel Injectors?
I'm running a 87 version HO 350 crate with my original TPI setup off of my 305 with 19lbs injectors. I still have the the original ECU and the way I understand , the MAF meters the air flow and sends the data to the ECU and the timing cycle changes for the injectors (19lbs to stay open longer for 350 engine) is this true? I have to admit that the idle is a little rough, but I think that it is due to the fact that they have never been serviced in 25 years. I did change the knock sensor and the ESC for a 350 engine and I am thinking of going to the Bosch III's injectors. Do they make these in a 19lb injector?
www.southbayfuelinjectors.com
#35
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Car: 89 iroc
Engine: l98
Transmission: tremec
Re: OEM Fuel Injectors?
Yes, they do make the design lll's in 19lb and we carry them. I can set you up with a BBk fuel pressure regulator which is a stock replacement for tpi 85-92 and you can adjust the fuel pressure to what you need up to 60psi. If you need the 22's...which i think you do.. they flow 22lb at 43.5psi and if you need 19lb you can drop the pressure to 34psi . We will be happy to help you with whatever you need!
www.southbayfuelinjectors.com
www.southbayfuelinjectors.com
#36
Re: OEM Fuel Injectors?
huh? do you sell the tan 19lb bosch 3? I tried running 22's at 34. They run ok but the bottom range is a little dirty. Unburned HC went up, we still have inspection here. I think they run better at higher pressure like 43 which the system was designed around. The BBK AFPR is ok for fine tuning your fuel system. It's not a good idea to use it to change injector size. The stock fuel system in our cars don't like higher pressure. The head pressure in the pump rises and will cause pump failure prematurely. To pull a pump out of an f body is the biggest PIA you have ever had. JMO
#37
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Re: OEM Fuel Injectors?
huh? do you sell the tan 19lb bosch 3? I tried running 22's at 34. They run ok but the bottom range is a little dirty. Unburned HC went up, we still have inspection here. I think they run better at higher pressure like 43 which the system was designed around. The BBK AFPR is ok for fine tuning your fuel system. It's not a good idea to use it to change injector size. The stock fuel system in our cars don't like higher pressure. The head pressure in the pump rises and will cause pump failure prematurely. To pull a pump out of an f body is the biggest PIA you have ever had. JMO
#38
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Car: 87 T-Top GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.27
Re: OEM Fuel Injectors?
Southbay08, a good friend of mine needs your help. WileECoyoteSr has a 91 Z-28 with the 5.7 350 TPI engine. He believes that he needs new injector for his ride. He's been looking on Ebay and needs to comfirm the Bosch III part #, and proper inj. sizefor his car. I think his size would be 22lb.
Could you please help us out?
Could you please help us out?
#39
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Re: OEM Fuel Injectors?
Hi, yes i just sent you and your friend a pm, he is definitely going to need the 22lb Bosch lll's for a 350 5.7 tpi.
He can also go to our website, but the part # is 0280155700.
He can also go to our website, but the part # is 0280155700.
#40
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Car: 87 T-Top GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.27
Re: OEM Fuel Injectors?
I think he was looking on Ebay and was getting 2 or 3 different part #'s and sizes for his car. He just needs someone to comfirm size and part #'s, and I must omit, its nice to have part #'s on here for future reference.
Thanks.
Thanks.
#41
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Car: 87 T-Top GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.27
Re: OEM Fuel Injectors?
Question: Does a 87 GTA w/5.7 TPI(my ride) use the same part # and size injector?
#42
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Re: OEM Fuel Injectors?
22lbs @ 43.5psi. Just remember, if you purchase from ebay without our "new adapter" or 2nd oring on the bottom of the injector,,,you are going to have a fitment issue....they will be too short. Stock injectors from 1985-1992 are approx 1/8 to 1/4in longer than the bosch lll's.
#43
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Car: 87 T-Top GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.27
Re: OEM Fuel Injectors?
Well, I know where I'm going for new injectors when the time comes! Do you think that this part will discontinued any time soon?(1-2yrs)?
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Re: OEM Fuel Injectors?
#45
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Car: 85 Z28 T-Top 36mm sway & wonderbar
Engine: TPI L98 350 W/85 Vette Stage II ECM
Transmission: W/C T-5, alum drive shaft
Axle/Gears: 9 bolt posi, 3:27, PBR's, BB LS1's
Re: OEM Fuel Injectors?
Interesting, I will check you guys out for sure...As far as mid to WOT the 350 runs great with 19lb injectors. All of my A.I.R. and Cat converter was trashed by the Mechanic who put this engine in for my son a few years back. I am not sure if I can get a prom for my ECU 1226870 (160 baud)with TPI 22lbs FI with a 5 spd trans. Maybe a Corvette of the same year might work. My ECU's prom is for TPI 19lb FI with a 700R4 trans and TC lock-up converter. any ideas will help.
Last edited by 85 ZXX; 02-07-2010 at 11:17 PM.
#46
Re: OEM Fuel Injectors?
Interesting, I will check you guys out for sure...As far as mid to WOT the 350 runs great with 19lb injectors. All of my A.I.R. and Cat converter was trashed by the Mechanic who put this engine in for my son a few years back. I am not sure if I can get a prom for my ECU 1226870 (160 baud) TPI 22lbs FI with a 5 spd trans. Maybe a Corvette of the same year might work. My ECU is for TPI 19lb FI with a 700R4 trans and TC lock-up converter. any ideas will help.
#47
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Car: 85 Z28 T-Top 36mm sway & wonderbar
Engine: TPI L98 350 W/85 Vette Stage II ECM
Transmission: W/C T-5, alum drive shaft
Axle/Gears: 9 bolt posi, 3:27, PBR's, BB LS1's
Re: OEM Fuel Injectors?
Will check it out...In 85 you couldn't get a 5 speed with a 350 in a thrid gen due to the torque it put out. The 5 speed was not rated for that much torque says GM. (What about the Corvette?) anyway, to make my car right, I would need a prom for a TPI 350, 22lb inj, 5 speed manual trans. Thanks!!!
#48
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Car: 88 IROC
Engine: 350 TPI
Transmission: auto
Re: OEM Fuel Injectors?
I ordered a set of the Bosch IIIs from Southbay this past summer and put in my 350 IROC. First time I had ever replaced an injector. It wasnt that bad, good time to go through and clean the whole TPI system and polish it. I used the double oring set up and they are working fine.
#49
Re: OEM Fuel Injectors?
i bought a set of bosch lll's from southbay too. Great company with customer service second to none. Will definitely recommend them. Friends of mine have used them and they too were very happy. A++
Besides, they are TGO sponsors
Besides, they are TGO sponsors
#50
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Car: 1991 z28
Engine: 5.7 tpi
Transmission: th700r4
Axle/Gears: 3.23
Re: OEM Fuel Injectors?
I,also replaced my injectors with Bosch III's (22 lbs.) on my 1991 z 28, from South Bay, about a year ago. Great product, Great price, Great performance, Great company! Nuff said! Randy