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TPI LT1 injector swap

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Old Aug 12, 2007 | 04:25 PM
  #1  
88 formula 350's Avatar
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TPI LT1 injector swap

Hi I'm new here and I have a question. Does LT1 injectors work with a TPI for a 350. The reason I ask is because they are a littel shorter than the ones that were in the TPI when it was on a 305. Any help is appreciated thanks
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Old Aug 12, 2007 | 06:01 PM
  #2  
socal's Avatar
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From: Lake Jackson Tx
Car: 91z,97ws6,98fb,87&90jeep,05 yz250
Engine: 5.0tpi,5.7LT4,5.7LS1,4.2I6,5.7TPI,1
Transmission: t5,4l60e,
Axle/Gears: 3.42
Re: TPI LT1 injector swap

i thought they would as well, but no there to short and the ls1's are even shorter but can be used in an lt1/4
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Old Aug 12, 2007 | 07:14 PM
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88 formula 350's Avatar
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Re: TPI LT1 injector swap

Thanks I guess I'll have to get different ones then. Do 5.0 mustang injectores work or should I just try to find stock ones
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Old Aug 13, 2007 | 01:05 AM
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: TPI LT1 injector swap

I have used '94 LT1 injectors in my TPI engine since 2001. I dont see them being shorter than TPI injectors, but GM has used several different injector styles over the years. The Ford SVO 19 lbs or 24lbs injectors will work too, and they're usually the best price.
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Old Aug 13, 2007 | 10:32 AM
  #5  
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Re: TPI LT1 injector swap

Thanks for the help I ordered the ford svo injectores should arrive soon.
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Old Aug 13, 2007 | 11:18 AM
  #6  
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From: Michigan
Car: 1987 Trans Am
Engine: 5.0L TPI
Transmission: 700R4
Axle/Gears: Richmond 3.73
Re: TPI LT1 injector swap

good choice. But I just wanted to add I have 24# LT1's in my 305 TPI.
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Old Aug 14, 2007 | 12:07 AM
  #7  
socal's Avatar
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From: Lake Jackson Tx
Car: 91z,97ws6,98fb,87&90jeep,05 yz250
Engine: 5.0tpi,5.7LT4,5.7LS1,4.2I6,5.7TPI,1
Transmission: t5,4l60e,
Axle/Gears: 3.42
Re: TPI LT1 injector swap

are they cliped in and properly seated in the bore all the way to the bottom for the proper spray pattern to the valve area. i just ask since the set up i had wouldn't work
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