Fuel injection conversion Q's....
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The ORIGINAL and bestest
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From: Toronto Ontario
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Fuel injection conversion Q's....
With the price of gas these days,I need to get better mileage, so I am considering making the switch to fuel injection. What systems are out there, and are some better than others? What does C3 Tech recommend?
Drifting
Joined: Mar 2005
Posts: 1,806
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From: Burlington WI
Here is a link...
http://forums.corvetteforum.com/show...084&forum_id=3
This will give you a little insight and more information.
Chris B
This will give you a little insight and more information.
Chris B
Race Director
Joined: Dec 1999
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From: Forked River NJ
I can't remember if you have an overdrive trans or not. If not this would save you more fuel. A properly setup carb vs. fuel injection will only net you a few mpg. Not worth the expense. Now for driveability the fuel injection is the winner hands down.
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The ORIGINAL and bestest
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From: Toronto Ontario
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thanks Chris, but I don't think I want to go with a TPI setup, my motor goes to 6000 rpm now, and aren't the TPI's done by 5000 rpm? I was thinking aftermarket. 
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From: Toronto Ontario
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Originally Posted by Gordonm
I can't remember if you have an overdrive trans or not. If not this would save you more fuel. A properly setup carb vs. fuel injection will only net you a few mpg. Not worth the expense. Now for driveability the fuel injection is the winner hands down.
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The ORIGINAL and bestest
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From: Toronto Ontario
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Originally Posted by big_G
Get a T.P.I.S. mini-ram or other system like the C-4 LT1. They pull past 6 grand with a 52 mm. throttle body. A good choice, IMO.
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The ORIGINAL and bestest
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From: Toronto Ontario
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Just checked out the TPIS website........mini ram setup is $3700! Yikes, I didn't know it would be that expensive. It would almost be worth finding a LS1 with wiring and computer from a wreck instead!
Race Director
Joined: Sep 1999
Posts: 11,361
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From: Plano TX
Holley Commander 950. It's a high flow single plane. Pulls way past 6k. Complete kit minus distributor is about $2200. Use a stock GM 8-pin distributor, ~$150 rebuilt from your local parts store with new cap, rotor and coil.
If you're on a budget a Commander 950 TBI kit gives you most of the advantages of the port system and you save almost $1000.
If you're on a budget a Commander 950 TBI kit gives you most of the advantages of the port system and you save almost $1000.
Team Owner
Joined: Oct 2004
Posts: 23,831
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From: Springfield MO
St. Jude Donor '07
www.lt1-intake.com (or something like that) has info on converting an LT1 intake to use on a standard SBC.
Drifting
Joined: Nov 2001
Posts: 1,469
Likes: 6
From: 68 427 4.11s Roadster
Due to 3 constraints I'm building my own intake. Low end long tubes, high end short tubes. That solves the choice problem. Slide valve to open the short ones.
Reasons.
1: I'm a cheep bastid and aint' spending thousands on doing this.
2: pretty much restricted with what I can buy for a BB
3: I want my cake and eat it too.
Reasons.
1: I'm a cheep bastid and aint' spending thousands on doing this.
2: pretty much restricted with what I can buy for a BB
3: I want my cake and eat it too.
Thread Starter
The ORIGINAL and bestest
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From: Toronto Ontario
Toronto Events Coordinator
Originally Posted by zwede
Holley Commander 950. It's a high flow single plane. Pulls way past 6k. Complete kit minus distributor is about $2200. Use a stock GM 8-pin distributor, ~$150 rebuilt from your local parts store with new cap, rotor and coil.
If you're on a budget a Commander 950 TBI kit gives you most of the advantages of the port system and you save almost $1000.
If you're on a budget a Commander 950 TBI kit gives you most of the advantages of the port system and you save almost $1000.
Race Director
Joined: Sep 1999
Posts: 11,361
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From: Plano TX
Originally Posted by 7t2vette
I will check it out, thats a little better $ wise. I have a full MSD ignition now, will my MSD distributor work with it? What advantages does the TBI setup give up?
The TBI uses the same computer so you have the same adjustability. The only thing you give up is the slightly better distribution of MPFI. A little crisper throttle response, mostly. Theoretically MPFI gets better mileage and makes more power. I'm not convinced the difference is enough to be measurable.
Le Mans Master
Joined: Jul 2001
Posts: 9,622
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From: absecon nj
its a shame your running a 406 cause ill have my complete tpi setup,everything needed to drop onto a enigne and run for sale at the end of the month.
87 t/a intake manifold,plenum,throttle body, runners,wiring harness,computer with custom prom,maf sensor and all sensors,dist.,24 lb motorsport injectors and an inline fuel pump also.
87 t/a intake manifold,plenum,throttle body, runners,wiring harness,computer with custom prom,maf sensor and all sensors,dist.,24 lb motorsport injectors and an inline fuel pump also.
Safety Car
Joined: Jul 2001
Posts: 3,921
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From: York PA
Originally Posted by big_G
Get a T.P.I.S. mini-ram or other system like the C-4 LT1. They pull past 6 grand with a 52 mm. throttle body. A good choice, IMO.
Le Mans Master
Joined: Aug 2000
Posts: 6,273
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From: Austin TX
A readily available TPI with ported plenum and oversized runners matched with a 52mm TB and 24# injectors will easily support well past 5500 rpm. You will need a custom chip for a Speed Density version.
Serviceable by GM dealers or any shop with a decent set of diagnostic tools.
INHO, this combo performs very well, is less expensive and expands your market for resale (most buyers aren't sophisticated enough to deal with aftermarket systems like Edelbrock, FAST and Accel).
Serviceable by GM dealers or any shop with a decent set of diagnostic tools.
INHO, this combo performs very well, is less expensive and expands your market for resale (most buyers aren't sophisticated enough to deal with aftermarket systems like Edelbrock, FAST and Accel).
Le Mans Master
Joined: Oct 2004
Posts: 7,997
Likes: 0
Sorry all, just curious if anyone has ever run a big block f/i setup?
Techno, you have more b***s and knowledge than me to do your own
im looking for something pre-made. I like the factory ram/502 but i doubt it would fit under the hood (11" total)
mike
Techno, you have more b***s and knowledge than me to do your own
im looking for something pre-made. I like the factory ram/502 but i doubt it would fit under the hood (11" total)
mike
Drifting
Joined: Nov 2001
Posts: 1,469
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From: 68 427 4.11s Roadster
The system I'm trying for has to clear the hood without using the scoop. Want to use the scoop for ram air so that is a no zone area.
Not sure but 11" might be in the zone with a hood scoop, it might clear for you.
This all depends on how good I am at sand cores. Haven't really done them yet but seems simple enough. Cast the individual pipes and weld those together. The alternative is build them like an exhaust system but didn't like the cost of prebent aluminum pipe.
BTW my Ba!!s aren't that big. The intake with carb are left untouched so next year I can bolt it back on
Not sure but 11" might be in the zone with a hood scoop, it might clear for you.
This all depends on how good I am at sand cores. Haven't really done them yet but seems simple enough. Cast the individual pipes and weld those together. The alternative is build them like an exhaust system but didn't like the cost of prebent aluminum pipe.
BTW my Ba!!s aren't that big. The intake with carb are left untouched so next year I can bolt it back on