Jegs 1" TBI and injector spacer
#1
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Car: 91 Camaro RS
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
Jegs 1" TBI and injector spacer
I would like to recommend to everyone useing a 305 or 350 TBI motor to buy a Jegs TBI spacer and injector spacer. I had my doubts at first but the final results were excellent! I noticed a High gain in torque and a good hp add. I spent about $85 total on it all. It was worth it. If you have any questions dont be affraid to ask. Gregg
#2
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Holy crap. Are we talking about the same thing?
I got this thing for free and have seen it sold for 10 bucks. You are talking about the spacer plate, right?
I got this thing for free and have seen it sold for 10 bucks. You are talking about the spacer plate, right?
#3
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Car: 91 Camaro RS
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
thats right. i spent about $20 on the injector spacer witch is the one in the pic and i spent about $75 on the 1" throttle body spacer.
#4
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Originally posted by gogo90camaro
thats right. i spent about $20 on the injector spacer witch is the one in the pic and i spent about $75 on the 1" throttle body spacer.
thats right. i spent about $20 on the injector spacer witch is the one in the pic and i spent about $75 on the 1" throttle body spacer.
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Car: 91 Camaro RS
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
I live in Michigan so i can do just about anything i want to my engine! but if your dareing the spacers are worth it and you will notice it. im going to get my car dynoed on monday. before i had the spacers on i had 422 hp and 456 ft. lbs torque. so it will be interesting to see what happens.
#6
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Car: 88 Firebird
Engine: 350 LO5 TBI
Transmission: 700R4 Vette Servo/Shift
gogo what kind of setup do you have on your camaro thats pumpin out 400+ hp. Curious because this is the tbi forum so i figured you have a lo3 or posibly a 350 tbi by some chance. Thanks for the spacer advice. Id grab one if i had a throttle body that actually worked
#7
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Car: 91 Camaro RS
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
i have a crate sb 350 bored 30 over, flat top hyperutenic pistons with a compression of 11 to 1, full length headers (costom) stock crank stock cam, all roller valve train, port and pollished everything, vortech heads, edelbrock tbi intake, eletcric water pump, no a.i.r, no A.C., stock computer, no chips, open element air cleaner, 1" tbi spacer and injector spacer, 160 degree thermostat, eletcric cooling fans, 700R4 trans (new) built with performance parts, tested up to 800 hp and 1000 lb of torque. this engine took me some time.
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#8
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Car: 88 Firebird
Engine: 350 LO5 TBI
Transmission: 700R4 Vette Servo/Shift
wow, good results for having a mild cam and no chip work. You should plan some custom chip burning and youd really be moving.
#9
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Car: 92 RS 25th Anniversary
Engine: 350 L98 w/Vortec Heads
Transmission: 700 R4
I dont know if this is off topic but can someone post a pic or a link with the Edelbrock TBI intake.....I have heard about it but have yet to see a pic of it. I could not find one on the Edelbrock Web site.............
#10
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Car: 1990 Formula
Engine: 305 TBI (LO3)
Transmission: 5 speed manual
There is a picture of the edlebrock intake in the Intake Manifold sticky at the top of the TBI section. I'd like to know how you pulled 400 HP with that intake as well, its decent for a 305 but it doesn't seem like it would handle 400 hp.
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Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
I don't mean this as calling bs or anything. But those numbers are very hard to believe. What kinda cam are you running in there? I hope you don't still have 305 injectors. If you have 305 injectors and stock fuel pump there's no way those numbers could ever be reached. I would be skeptical still even if you had a 255 lph pump and 90pph injectors. Like I said though, I'm not calling bs, just prove me wrong; let us know what ya got.
#12
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Car: 91 Camaro RS
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
dont forget im running a 350 cid bored .30 over. the crate engine came stock with 350 hp to begin with. hope that helps
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Car: 91 Camaro RS
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
i dont plan to do any chip work any time in the future. it may be considered in the next year or so but for know ill stick to what i got.
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Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
So you are saying you're running 305 injectors? and stock fuel pump? There's absolutely no way you're making that kind of power, sorry. That just isn't happening, especially without chip work. Maybe those injectors would give enough gas to fuel it up to about 2k rpm, that's a maybe. Some guys are running out of injector with mild 305's. Also, what are the specs on the cam? Got a printout from the dyno readings? I don't want to sound like an a$$ but I hate when people make claims like that, I just don't believe it. But, like I said, prove me wrong.
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Car: 91 Camaro RS
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
the throttle body is out of a 1992 chevy 2500 series silverado truck. so it is a 350 tbi unit. and i am not shure on the cam. it came with the engine.
#17
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Car: 91 Camaro RS
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
the fuel pump and regulator are somewhat stock. the pump os ment for a 350 tpi motor running 15 psi instead of the 12 to 13 the tbi needs. the regulator came is the stock one from the truck.
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Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
those would be 55pph injectors then and stock 1 11/16" bores. I just don't see that producing the numbers you say.
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Car: White KSwisses
Engine: 5.3L Gen III
Originally posted by Cadillac
I think the TBI spacer is illegal in CA.
I think the TBI spacer is illegal in CA.
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Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
You'd probably fail a visual inspection with a spacer in Cali but its like a 5 minute job to take it off before you get it tested.
#23
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Originally posted by cali92RS
There is noooo way they would bust you for a spacer. I can gaurantee that one.
There is noooo way they would bust you for a spacer. I can gaurantee that one.
Not worried.
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Car: 1988 Pontiac Trans Am
Engine: 5.0L Fuel Injection
Transmission: Automatic 4speed /w OVerdrive
What is the purpose of the TBI spacer. I know the injector spacer allows the injectors to sit higher which allows more of an opening for more air but what exactly does the TBI spacer allow?
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Car: 91 Camaro RS
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
Chassis dyno i just had my car dynoed again yesterdeay. i only got a 8 hp increase and a 12 ft lb torque increase so it wasnt that much. but for some reason it seems like it has alot more when you drive it.
#28
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Car: 91 Camaro RS
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
the TBI spacer allows the fuel to atomize better before entering the cylinders. making for a better and a more powerfull combustion.
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Car: 90 454SS
Engine: 454 TBI
Transmission: TH400
Originally posted by gogo90camaro
Chassis dyno i just had my car dynoed again yesterdeay. i only got a 8 hp increase and a 12 ft lb torque increase so it wasnt that much. but for some reason it seems like it has alot more when you drive it.
Chassis dyno i just had my car dynoed again yesterdeay. i only got a 8 hp increase and a 12 ft lb torque increase so it wasnt that much. but for some reason it seems like it has alot more when you drive it.
#31
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Car: 91 Camaro RS
Engine: 305 TBI (L03)
Transmission: T5
Axle/Gears: 3.73 Truetrac posi
Getting back to the original topic about the 1" TBI and injector spacer . . . the guys using these, what kind of hood clearance do you have? I've got a flat base 14"X3" open element air cleaner. The nut on the ac is already poking into the insulation on the back side of the hood. I don't think I could add a TBI spacer without maybe going to a drop base air cleaner and/or an aftermarket hood.
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Car: 1991 Chevy Camaro
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3.42
No, I think you're right, I don't see how you could add a TB spacer with a non-drop base if it's already poking the insulation.
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Car: 91 Camaro RS
Engine: 305 TBI (L03)
Transmission: T5
Axle/Gears: 3.73 Truetrac posi
I suppose a 2" tall element would gain me an inch, but that would be more restrictive to airflow and maybe negate the benefits of the tbi spacer. Don't know for sure, maybe someone using the spacer will chime in.
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Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
You're using a flat base open element, did you take out the gold ring that the air cleaner sat on? You don't need that with a flat base. I'm running an aftermarket intake that sits quite a bit higher and a flat base air cleaner. I run a 2" tall element. We're dealing with an LO3 here, it won't be a restriction at all.
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Car: 91 Camaro RS
Engine: 305 TBI (L03)
Transmission: T5
Axle/Gears: 3.73 Truetrac posi
I removed the collar that the stock air cleaner sat on. I'm running a 3" element with a flat base. Like I said, can't go any taller as I'm already kissing the insulation on the hood. You're probably right, I could drop down to a 2" element like you are an not suffer any airflow loss and get an extra inch of room for a TBI spacer.
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Car: '89 Formula, '97 Z28, '88 Formula 350
Engine: 305 TBI(LO3)
Transmission: TH700R4(MD8)
GOGO90Camaro, I'd have to see a vido of your car on the dyno & results to beleave those #'s. give use some proof????
#37
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back to the air cleaner. i run the holley projection with GM 454 TB. the AC is a 3 inch drop sitting on a 1.5 inch diverter ring(?). so net drop is 1.5 inch. i clear the inj pod by 1/4 inch to bottom of top of lid. the top of AC nut clears the hood by barely 1/4 inch. i needed to use a 14x2 round KN. think that is enough air flow to feed. just ran engine today to break in cam. not yet winaldl.
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A 14x2 air cleaner is more than enough to feed a TBI car. People just go with 14x3's since they are more proportional and a pretty much standard universal automotive part.
#39
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Is this the basic scenario? He bought a crate engine with 350 HP and now it's doing 800?
#40
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Car: firebird '89
Engine: 305 tbi
Transmission: it works I'm happy
As far I read this he bought a crate motor that came with 350HP and he's tinkerd with it a little and got it nearer or over 400Hp.
My summit catalouge shows crate motors coming with that, then you just add the your intake and fuel system. HEY DUDE did you do the install yourself? If he paid someone else to do it I'd assume they'd take care of the fuel pump issue and injectors.
So What anyway! maybe he's some 15 yearold kid from kansas dreaming he has 400 HP.
I wish I could dream my car had just 250Hp and looked shiny but the harsh reality of it breaks through and craps on the dream.
Hey CADDY looked over your carsite domain thingy congrats on the trophy . you pumped serious $ into that 'bird no wonder it looks so sweet. He said his tranny was tested to 800hp.
My summit catalouge shows crate motors coming with that, then you just add the your intake and fuel system. HEY DUDE did you do the install yourself? If he paid someone else to do it I'd assume they'd take care of the fuel pump issue and injectors.
So What anyway! maybe he's some 15 yearold kid from kansas dreaming he has 400 HP.
I wish I could dream my car had just 250Hp and looked shiny but the harsh reality of it breaks through and craps on the dream.
Hey CADDY looked over your carsite domain thingy congrats on the trophy . you pumped serious $ into that 'bird no wonder it looks so sweet. He said his tranny was tested to 800hp.
#41
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Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Originally posted by gogo90camaro
i have a crate sb 350 bored 30 over, flat top hyperutenic pistons with a compression of 11 to 1, full length headers (costom) stock crank stock cam, all roller valve train, port and pollished everything, vortech heads, edelbrock tbi intake, eletcric water pump, no a.i.r, no A.C., stock computer, no chips, open element air cleaner, 1" tbi spacer and injector spacer, 160 degree thermostat, eletcric cooling fans, 700R4 trans (new) built with performance parts, tested up to 800 hp and 1000 lb of torque. this engine took me some time.
i have a crate sb 350 bored 30 over, flat top hyperutenic pistons with a compression of 11 to 1, full length headers (costom) stock crank stock cam, all roller valve train, port and pollished everything, vortech heads, edelbrock tbi intake, eletcric water pump, no a.i.r, no A.C., stock computer, no chips, open element air cleaner, 1" tbi spacer and injector spacer, 160 degree thermostat, eletcric cooling fans, 700R4 trans (new) built with performance parts, tested up to 800 hp and 1000 lb of torque. this engine took me some time.
Anyway, for all the agrivation that can come with raising the tbi Id sooner go with a good 50 state legal intake with egr provisions, although I dont know if the smog ***** would allow the use of a carb intake with an efi system. Unlike the spacer, though, the intake will do more then just add extra plenum volume.
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