Alternative Port EFI Intakes This board is for tech discussions and questions about aftermarket port EFI such as the HSR, MR, SR, BBK, FIRST, etc.

DIY Fuel Injection

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Old Apr 4, 2010 | 12:31 AM
  #1  
Ilike2stroke383's Avatar
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Joined: Feb 2010
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From: in my car
Car: 1987 Gta Trans Am
Engine: 383 Stroker
Transmission: t-56
Axle/Gears: 3.47 02 SS rear end
DIY Fuel Injection

Im ready to get fuel injection, no more waiting, time to go for it.

Ive been doing some research but have some questions. I was thinking about buy the HSR intake manifold. What throttle body could be used with this? I already have the computer for my car from when it was swaped to a carb and some of the sensors such as O2 and knock but will need a few more.

Injectors would be next, what would be some good size injectors on the cheap for a forged 383 making around 500 hp? What fuel rails will work with the hsr?

Sorry if this is newbish, im just really needing some guidance.
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Old Apr 4, 2010 | 05:32 PM
  #2  
RedGut86's Avatar
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Joined: Oct 2005
Posts: 175
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From: CA
Car: 86 Corvette 383
Engine: 383 LPE build
Transmission: 4+3... T56 soon enough
Axle/Gears: 3.07
Re: DIY Fuel Injection

Originally Posted by Ilike2stroke383
Injectors would be next, what would be some good size injectors on the cheap for a forged 383 making around 500 hp? What fuel rails will work with the hsr?

Sorry if this is newbish, im just really needing some guidance.
On injectors, depends on the motor and the tuner. There are calculators out there to determine what you really need.

The cheapest you might be able to get away with is finding some LS motor pull offs. I know the LS1s at 60psi are 28lb/hr. If you can run the LS2/LS3 ones and can find crate motor pull offs they may be a higher lb/hr and work too. I got the LS1s for 99$ for a brand new set of pull offs and they plug right up to stock electronics.
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