Fuel Injection
Racer
Joined: Dec 2003
Posts: 304
Likes: 0
From: Pasadena Maryland
I haven't installed one on my vette, but I put one on my son's 87 Jeep Wrangler. We put a small block chevy in it. It wouldn't pass emissions with the holley on it so I installed a Holley Pro-Jection system on it with an O2 sensor. Runs pretty good and passes Maryland's sniff test. You're going to need a return line for the fuel tank if you go with any kind of fuel injection.
Burning Brakes
Joined: Oct 2001
Posts: 1,185
Likes: 0
From: New Wilmington PA
I have installed the commander 950 kit on a zz4 in my vette. Another member around here, Zwede, has installed it on a 454 in his vette.
Last edited by Cookwithvette; Nov 23, 2004 at 08:54 AM.
Melting Slicks
Joined: Aug 2003
Posts: 3,416
Likes: 291
From: dayton oh
I've got the Pro-Jection 2Brl TBI unit feeding Fast81 since 1998.
Haven't added the closed-loop add-on (O2 sensor feedback).
Don't beleive the BS about needing the 4brl unit for more than 300hp, I haven't maxed the settings or the fuel pressure on my unit to feed the mods described below
Haven't added the closed-loop add-on (O2 sensor feedback).
Don't beleive the BS about needing the 4brl unit for more than 300hp, I haven't maxed the settings or the fuel pressure on my unit to feed the mods described below
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
I guess you have your profile set not to display signatures?
Here's the link:
http://www.corvetteforum.net/c3/zwede
Here's the link:
http://www.corvetteforum.net/c3/zwede
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Thread Starter
Cruising
Joined: Sep 2004
Posts: 13
Likes: 0
Originally Posted by zwede
I guess you have your profile set not to display signatures?
Here's the link:
http://www.corvetteforum.net/c3/zwede
Here's the link:
http://www.corvetteforum.net/c3/zwede
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
Never tried the stock aircleaner, but I did run an aftermarket open element aircleaner for a while. It was one of those $30 chrome drop-base aircleaners. I did have to cut 1/2" off the manifold to make it fit (detailed on the webpage). If you have a smallblock it should fit fine without cutting.
I have a modern stereo so I removed the old stereo amp a long time ago. You could probably fit it if you really wanted to. There's quite a bit of room.
Yes, I'm using an external pump. The one I show in the pictures on the webpage is the old Holley EFI pump. Holley now supplies a newer (better) pump made by Wal-Bro. My old pump started making noises about a year after install. Holley sent me a wal-bro pump at no cost. The wal-bro works great and is very quiet.
I have a modern stereo so I removed the old stereo amp a long time ago. You could probably fit it if you really wanted to. There's quite a bit of room.
Yes, I'm using an external pump. The one I show in the pictures on the webpage is the old Holley EFI pump. Holley now supplies a newer (better) pump made by Wal-Bro. My old pump started making noises about a year after install. Holley sent me a wal-bro pump at no cost. The wal-bro works great and is very quiet.
Thread Starter
Cruising
Joined: Sep 2004
Posts: 13
Likes: 0
Fuel Return Line
I noticed you ran a new 3/8" aluminum fuel return line. I have three more questions.
1). Did you have to lift the body off the frame to get the fuel line between the body and frame ( god it's tight ).
2). I believe my stock 72 Big Block has a total of 3 fuel lines. One on the drivers side ( 1/4" ) for the fuel evap system from the canister back to the tank. Two on the passenger side of which one is the 3/8" fuel supply line and the other is a 5/16" fuel pump return line back to the tank.
I believe the 71 was quite similar to this. If so, why didn't you use the 5/16" fuel pump return line instead of running a new line ? Thats my plan if it will work.
3). Are you using the fuel evap canister any longer ?
PS Thanks for ALL the info. This is a huge help as you have already been through this.
Al Jackson
1). Did you have to lift the body off the frame to get the fuel line between the body and frame ( god it's tight ).
2). I believe my stock 72 Big Block has a total of 3 fuel lines. One on the drivers side ( 1/4" ) for the fuel evap system from the canister back to the tank. Two on the passenger side of which one is the 3/8" fuel supply line and the other is a 5/16" fuel pump return line back to the tank.
I believe the 71 was quite similar to this. If so, why didn't you use the 5/16" fuel pump return line instead of running a new line ? Thats my plan if it will work.
3). Are you using the fuel evap canister any longer ?
PS Thanks for ALL the info. This is a huge help as you have already been through this.
Al Jackson
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
Originally Posted by Al Jackson
I noticed you ran a new 3/8" aluminum fuel return line. I have three more questions.
1). Did you have to lift the body off the frame to get the fuel line between the body and frame ( god it's tight ).
1). Did you have to lift the body off the frame to get the fuel line between the body and frame ( god it's tight ).
2). I believe my stock 72 Big Block has a total of 3 fuel lines. One on the drivers side ( 1/4" ) for the fuel evap system from the canister back to the tank. Two on the passenger side of which one is the 3/8" fuel supply line and the other is a 5/16" fuel pump return line back to the tank.
I believe the 71 was quite similar to this. If so, why didn't you use the 5/16" fuel pump return line instead of running a new line ? Thats my plan if it will work.
I believe the 71 was quite similar to this. If so, why didn't you use the 5/16" fuel pump return line instead of running a new line ? Thats my plan if it will work.
3). Are you using the fuel evap canister any longer ?
