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.

anyone make thier own efi?

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Old Feb 6, 2006 | 08:31 AM
  #1  
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From: Sayreville nj usa
Car: 02 redfire gtp coupe
Engine: 3.8 modded and supercharged
Transmission: 4t65-ehd
anyone make thier own efi?

i keep thinking about tpi, tbi, and not knowing what i really want long run. then i found some pictures of my 78 type lt camaro. my senior year of hs i built a 355 in shop class and installed it. with a crap th350 and unknown open rear it did 13's in the 1/4. never made it to dynoing since people get jelouse easy and messed with it to the point it caught fire while i was driving it.
i miss the car but more importantly i loved the motor. a friend bought it and ran it in his pickup with a 144 supercharger. well anyway of all the motors in all the cars in the land i thought about another 355. it was cheap enough for a hs kid to afford on 6.50 and hour so it should be no problem these days. but i lost my nack with carbs. i cant even begin to think how badass that motor could have been with efi.

so now to the question. is it possible to take any aftermarket intake (example rpm air gap or victor jr) drill the intake itself, add injector bungs and a fuel rail (maybe a tpi rail for cost/simplicity) then fabricate an adapter for an ls1 throttlebody of something like that? i plan to use the megasquirt system to run everything. i think it would have so much more potential and for cost put out a lot more ponies and be more easily tuned.
am i nuts?
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Old Feb 6, 2006 | 12:44 PM
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: anyone make thier own efi?

Originally posted by flyboy367

so now to the question. is it possible to take any aftermarket intake (example rpm air gap or victor jr) drill the intake itself, add injector bungs and a fuel rail (maybe a tpi rail for cost/simplicity) then fabricate an adapter for an ls1 throttlebody of something like that? i plan to use the megasquirt system to run everything. i think it would have so much more potential and for cost put out a lot more ponies and be more easily tuned.
am i nuts?
You really need to search and read other thrads before asking simple questions like those. If it was not possible to make an intake, this forum would not exist.
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Old Feb 19, 2006 | 10:18 PM
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From: chicago
like this



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Old Feb 20, 2006 | 06:44 AM
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From: Sayreville nj usa
Car: 02 redfire gtp coupe
Engine: 3.8 modded and supercharged
Transmission: 4t65-ehd
yea something like that. looks pretty good. how much did that run you if ya dont mind me askin?
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Old Feb 20, 2006 | 07:26 PM
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
Vic Jr I converted

http://www.cecoatings.com/images/Car...cJrConversion/
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Old Feb 20, 2006 | 07:43 PM
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Here's where you need to go for a DIY EFI system

http://www.msefi.com/
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Old Feb 21, 2006 | 02:42 PM
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From: illinois
Car: 1991 camaro rs
Engine: v6 3.1
Transmission: auto
whats that connecting the throttle body to the base??? looks awesome
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Old Feb 21, 2006 | 06:26 PM
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Originally posted by flyboy367
yea something like that. looks pretty good. how much did that run you if ya dont mind me askin?
more than id like to admit.

It really depends on how much power your making and how are u making it(turbo,supercharger,nitrous).If your making under 400 hp it shouldnt cost u more than $3000.

whats that connecting the throttle body to the base???
its an elbow from wilson manifolds.
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Old Feb 21, 2006 | 08:37 PM
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
Ive got $75bucks in converting mine over so far. Thats what a used Vic Jr cost me. made my own injector bungs,etc..
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Old Feb 22, 2006 | 04:26 AM
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Yea, I’m not sure why people make that big a deal WRT to cost… I’ve had the vic jr that I’m using sitting around forever, traded it for some parts, and everything that I’ve used so far has been assorted scrap that I’ve had sitting around. The only thing that I’ve actually spent money on so far was just under $40 for some fuel rail stock (which I really didn’t need to spend money on, I’ve got a spare set of LT1 rails that seem to fit fine) and a new carbide bur to port match my heads to it.
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Old Feb 22, 2006 | 11:13 AM
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
Mark have you tried to see if TPI rails woul work if taken apart and redid with AN fittings etc?

I have a pair layin around but havent had time to rip em apart yet. If not I'll prob just buy some or made my own like I did the bungs.
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Old Feb 22, 2006 | 12:15 PM
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
I would just buy your own rail stock. I got 3' of it for $25 shipped.
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Old Feb 22, 2006 | 10:53 PM
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From: illinois
Car: 1991 camaro rs
Engine: v6 3.1
Transmission: auto
where could i get it i havent seen it on anyone else manifold
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Old Feb 23, 2006 | 09:31 AM
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
http://www.rossmachineracing.com/extrusion.html
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Old Feb 23, 2006 | 03:06 PM
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From: illinois
Car: 1991 camaro rs
Engine: v6 3.1
Transmission: auto
i meant the bracket al though that is an awesome source
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Old Feb 24, 2006 | 12:23 PM
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
http://www.intakeelbows.com/
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Old Feb 24, 2006 | 04:03 PM
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Originally posted by TPl383
Mark have you tried to see if TPI rails woul work if taken apart and redid with AN fittings etc?

I have a pair layin around but havent had time to rip em apart yet. If not I'll prob just buy some or made my own like I did the bungs.
Naw, the only TPI parts that I have are the ones that are running on the car, and since I don’t want to totally disable the car till I’m ready (the rear and the tranny are AFU, but I can still “drive” it in and out of the garage so I can get it out of my way when I have to)…

I suspect that they would work and it might be easier then to use the fuel rail stock as well as making my own would have been easy enough…. Honestly, the biggest reason that the thing isn’t done by now is that I can’t decide how I really want to route the fuel lines. I’m having a real conflict between “form follows function” and “this thing is going to look like a cluttered mess”
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