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What size injectors?? in a....

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Old 10-11-2001, 10:55 AM
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Car: 1991 Firebird
Engine: 427 LSX
Transmission: Turbo 400
What size injectors?? in a....


What size injectors are in a 3.1 liter, 3.4, 3.8. Supercharged? Any info will be appreciated

------------------
1991 Firebird
350 L98 (was a 305 TBI),T-5,Edelbrock TES and cat back,Accel manifold
NOS,subframes,jegster torque arm,MSD Digital 6
AFPR,Lakewood lcas
Hurst linelock,SLP cam (206 212 .480 .486),relocated battery,cold air,Hypertech chip,centerforce df,clutch
poly bushings and mounts
AFR 190s
Harland sharp 1.5 rockers
autopower rollbar

12.33 @ 114.83 juiced uncorrected

13.510 @ 102 non juiced uncorrected
Old 10-11-2001, 01:14 PM
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Car: 13 Ram 1500/ 78 Formy
Engine: 5.7 / 7.4
Transmission: 6sp / TH350
Axle/Gears: 3.55 posi / 3.23
I believe the 3.1 had 19#, same as 2.8. 3.4 w/24# injectors. not sure on the 3.8. maybe a trip to www.grandprixstore.com can help .

------------------
$150.00 2.8 Auto.
Blown Head Gasket.
turbo has arrived,
sold the t-bird, & got
head bolts & most of the gaskets
Old 10-12-2001, 07:08 AM
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bub
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2.8 comes stock with 15lb injectors 3.1 is 16lb 3.4 is 17lb injectors most 19lb injectors were for 305 and 22lb for 350
Old 10-12-2001, 09:46 AM
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Car: 1991 Firebird
Engine: 427 LSX
Transmission: Turbo 400
Conflicting answers???????
Old 10-12-2001, 03:12 PM
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I believe Bub is right, however if you're buying/finding new, 19 is a good upgrade. They won't harm anything.

------------------
1985 Camaro SC - 2.8L, auto.

C'mon, spin 'em for papa...
http://www.xenodrgn.f2s.com/Frontright.jpg
Old 10-12-2001, 06:58 PM
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bub
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get your injectors from accel $150.00
6 pack 17lb dont go any bigger or you will have to go to a custom chip. from the prom board ive heard them tell me 10% increase in injectors can cause your car to run funny or rich. remember that not all cars are the same it might be same engine, year, parts,
one thing may run good in your car but the same wont run in another.
Old 10-13-2001, 05:12 PM
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Car: 1991 Firebird
Engine: 427 LSX
Transmission: Turbo 400
Here is my sig again. I just wanted to know about injector sizes for a debate I am having. I do not need injectors or anyone's unsupported logic as to why "some injectors jest don't run right in some cars."

------------------
1991 Firebird
350 L98 (was a 305 TBI),T-5,Edelbrock TES and cat back,Accel manifold
NOS,subframes,jegster torque arm,MSD Digital 6
AFPR,Lakewood lcas
Hurst linelock,SLP cam (206 212 .480 .486),relocated battery,cold air,Hypertech chip,centerforce df,clutch
poly bushings and mounts
AFR 190s
Harland sharp 1.5 rockers
autopower rollbar

12.33 @ 114.83 juiced uncorrected

13.510 @ 102 non juiced uncorrected
Old 10-14-2001, 06:33 AM
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bub
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ill say it agian the 3.1 uses 16lb injectors
the 3.4 comes stock with 17lb injectors now it depends on what engine is it for a 3.4DOHC
3.1 turbo ect, but for stock injectors on 2.8
3.1 3.4 = 15=16=17=lb i dont know about 3.8
if its a turbo it could have larger injector or smaller.
also the unsuppoted logic u seek is if your car was made on a friday or monday the workers are in a rush or dont want to work at all. thinking about the weekend and not about the car on the line. thats just one reason. just like bosch +4 spark plug might be good for someones 86 camaro 3.1 but another 86 camaro 3.1 might favor autolight
how would u know? your gas milage could suffer or better top end with a different plug.

[This message has been edited by bub (edited October 14, 2001).]

[This message has been edited by bub (edited October 14, 2001).]
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