fuel injection...
Thread Starter
Safety Car
Joined: Mar 2002
Posts: 4,411
Likes: 1
From: Okeechobee Florida
fuel injection...
i am considering fuel injection for my C3...
has anyone here converted using something like camaro or firebird units?
i would be interested in hearing from people that have done this or have knowledge of such a thing...
thanx...
has anyone here converted using something like camaro or firebird units?
i would be interested in hearing from people that have done this or have knowledge of such a thing...
thanx...
Racer
Joined: May 2004
Posts: 294
Likes: 0
From: Jacksonville FL
Originally Posted by SIGNGUY
i am considering fuel injection for my C3...
has anyone here converted using something like camaro or firebird units?
i would be interested in hearing from people that have done this or have knowledge of such a thing...
thanx...
has anyone here converted using something like camaro or firebird units?
i would be interested in hearing from people that have done this or have knowledge of such a thing...
thanx...
Thread Starter
Safety Car
Joined: Mar 2002
Posts: 4,411
Likes: 1
From: Okeechobee Florida
i searched TPI and found nothing...
what are you doing about the control computer to manage the system?
what years and models fit (camaro? firebird?)
thanx guys!
what are you doing about the control computer to manage the system?
what years and models fit (camaro? firebird?)
thanx guys!
Last edited by OkeeGuy; Mar 31, 2005 at 05:55 AM.
Thread Starter
Safety Car
Joined: Mar 2002
Posts: 4,411
Likes: 1
From: Okeechobee Florida
Originally Posted by Fireslayer26
Hey signguy, I am right in the middle of doing that. Check out this thread I started. Alot of good answers in there.
Le Mans Master
Joined: Jul 2001
Posts: 9,622
Likes: 16
From: absecon nj
http://forums.corvetteforum.com/show....php?t=1043855
Really any years willwork, maf setups will respond to chnages easier then speed density setups,but if your not making alot of changes,like cam etc.. then speed density will work.Im using the stock 87 t/a computer with a custom made chip.Theres afew guys that have done it here,marktd,mrvette ,timbo etc...
Really any years willwork, maf setups will respond to chnages easier then speed density setups,but if your not making alot of changes,like cam etc.. then speed density will work.Im using the stock 87 t/a computer with a custom made chip.Theres afew guys that have done it here,marktd,mrvette ,timbo etc...
Last edited by patsnitrovette; Mar 31, 2005 at 08:00 AM.
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Sign, I did mine as one of the first things upon getting the car some ten years ago....the car had a fresh rebuilt L48 engine in there in good condition, but with the Qjet and iron intake it only got 12-13 mpg with muncie and 336 gears.....that changed to about 24 on highway and 19 average around town....about 250 hp was all it had....
since moving to Florida here in '97, I put in a roller engine, truck block 4 bolt factory...ZZ9 cam, and 700 overdrive tranny, now gets about 22 on highway, and about 18 around town...close to 400 hp....running factory iron heads now, the Edel aluminum heads blew a gasket once, and so I returned to the iron....
the computer is a 1227730 junkyard ten bux variety, and so are all the connectors and sending units/sensors 3.1 engines use many similar/exact components....
I recommend doing your own wiring harness, assuming you can solder wires, rather than spending hundreds on a harness....
the speed density is easier for the intake plumbing, just use a K/N filter over the snout....
GENE
since moving to Florida here in '97, I put in a roller engine, truck block 4 bolt factory...ZZ9 cam, and 700 overdrive tranny, now gets about 22 on highway, and about 18 around town...close to 400 hp....running factory iron heads now, the Edel aluminum heads blew a gasket once, and so I returned to the iron....
the computer is a 1227730 junkyard ten bux variety, and so are all the connectors and sending units/sensors 3.1 engines use many similar/exact components....
I recommend doing your own wiring harness, assuming you can solder wires, rather than spending hundreds on a harness....
the speed density is easier for the intake plumbing, just use a K/N filter over the snout....
GENE
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Le Mans Master
Joined: Jul 2001
Posts: 9,622
Likes: 16
From: absecon nj
Just realized your running a 5 speed ,youll have to find a prom for a 5 speed.OR have a prom made for your setup or a aftermarket setup,fast controller,holley 950,etc..check out these sites alot of good info to learn.
http://chevythunder.com/speed%20dens...n%20manual.htm
http://chevythunder.com/
http://chevythunder.com/speed%20dens...n%20manual.htm
http://chevythunder.com/
Race Director
Joined: Dec 2000
Posts: 10,896
Likes: 2
From: CO
Im still waiting for someone to try this http://www.megasquirt.info/index.html
When I finally re-build my engine I plan on attempting it. It actually doesn't sound too terribly difficult if you don't let the formulas scare ya.
When I finally re-build my engine I plan on attempting it. It actually doesn't sound too terribly difficult if you don't let the formulas scare ya.
Burning Brakes
Joined: Sep 2002
Posts: 1,179
Likes: 3
From: SF East Bay CA
Hi SignGuy...
It is pretty simple..... be prepared to get into everything though if you are a perfectionist.
I used an aftermarket plenum, throttle body and runners, but basically it is a speed density unit that was running an ECU from a '90 vette when I installed. I have since upgraded the controller to a F.A.S.T. programmable unit. Biggest thing you need to consider is the fuel lines and the use of a high pressure fuel pump. I ran new lines which was a whole lot of fun
But seriously, not that bad.. I went a bit overboard and also got a serpentine system to free up some area in the front. also changed radiator, switched to electric fans, etc...
I got my system from Ken at www.firstinjections.com
I went this route so I was not just buying a rebuildable unit from a wrecker or something. I also wanted to have all of the parts, etc ready and not be searching for anything during the install. I did buy the serp system from a wrecker, because I needed all of the correct brackets (from a '90)
Lots of info on the forum.. Budman78... patsnitrovette, etc... It was all helpfull when I did it..
Great mod as well!!! I am awaiting the new 5 speed from Keisler.. this should be my final mod!! Good Luck!!
It is pretty simple..... be prepared to get into everything though if you are a perfectionist.
I used an aftermarket plenum, throttle body and runners, but basically it is a speed density unit that was running an ECU from a '90 vette when I installed. I have since upgraded the controller to a F.A.S.T. programmable unit. Biggest thing you need to consider is the fuel lines and the use of a high pressure fuel pump. I ran new lines which was a whole lot of fun
But seriously, not that bad.. I went a bit overboard and also got a serpentine system to free up some area in the front. also changed radiator, switched to electric fans, etc...I got my system from Ken at www.firstinjections.com
I went this route so I was not just buying a rebuildable unit from a wrecker or something. I also wanted to have all of the parts, etc ready and not be searching for anything during the install. I did buy the serp system from a wrecker, because I needed all of the correct brackets (from a '90)
Lots of info on the forum.. Budman78... patsnitrovette, etc... It was all helpfull when I did it..
Great mod as well!!! I am awaiting the new 5 speed from Keisler.. this should be my final mod!! Good Luck!!
Le Mans Master
Joined: Oct 2001
Posts: 5,145
Likes: 125
From: The Motor City
Originally Posted by flood
Im still waiting for someone to try this http://www.megasquirt.info/index.html
http://www.ls1tech.com/forums/showth...ght=megasquirt
http://www.ls1tech.com/forums/showth...ght=megasquirt
http://www.ls1tech.com/forums/showth...ght=megasquirt
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
For those of you who would like to build their own custom EFI system from junkyard parts, the GM-ECM section at www.diy-efi.org has some good info.
If you're willing to do some reprogramming of the computer, the speed density system works just as well as the MAF, and the parts are cheaper. MAFs are fairly expensive items, and can be an intake impediment.
If you're willing to give up a bit of torque to gain a lot of top end, the LT-1 intake can be modified to work on standard-flow cooling systems.
If you're willing to do some reprogramming of the computer, the speed density system works just as well as the MAF, and the parts are cheaper. MAFs are fairly expensive items, and can be an intake impediment.
If you're willing to give up a bit of torque to gain a lot of top end, the LT-1 intake can be modified to work on standard-flow cooling systems.
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Originally Posted by SIGNGUY
thanx for all of the ideas and input guys but i am scraping the idea as it seems to be a PITA...
thanx again!
thanx again!
GENE
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
Originally Posted by SIGNGUY
thanx for all of the ideas and input guys but i am scraping the idea as it seems to be a PITA...
thanx again!
thanx again!
how's my sign coming along?
a well tuned carb is good enough for me. I always know i can get it running as long as i have fuel pressure.