LS2 intake and LS1/6 fuel system question
Thread Starter
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 47
From: Helotes TEXAS
LS2 intake and LS1/6 fuel system question
Quick qestion for your LS GURU's....
I purchased an LS2 intake and 90mm TB to install on my FRC.
My question is, can I reuse my existing LS1 intake fuel system/rails on the LS2 intake ?
OR do I have to buy the fuel rails for the LS2 intake ?
I purchased an LS2 intake and 90mm TB to install on my FRC.
My question is, can I reuse my existing LS1 intake fuel system/rails on the LS2 intake ?
OR do I have to buy the fuel rails for the LS2 intake ?
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
You need to use LS2 rails, but you need to make sure you're injectors fit the cups, and I believe they are too short to reach thier seats without modification. You also will need a LS1 to LS2 wiring harness adapter. It's not a very good mod for your car, IMO. Do you have a returnless fuel system? If you haven't already bought it, you're better off with a LS6 mani, or FAST, which'll need the harness, but uses your fuel rail/injectors. (FAST 90). I don't know about the newer Wilsons.
Safety Car
Joined: Oct 2007
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From: You know your drunk when you swerve to miss the tree then you realize its your air freshener! Covington Ga
You need to use LS2 rails, but you need to make sure you're injectors fit the cups, and I believe they are too short to reach thier seats without modification. You also will need a LS1 to LS2 wiring harness adapter. It's not a very good mod for your car, IMO. Do you have a returnless fuel system? If you haven't already bought it, you're better off with a LS6 mani, or FAST, which'll need the harness, but uses your fuel rail/injectors. (FAST 90). I don't know about the newer Wilsons.
I'd use a LS6 over the LS2 manifold.
Thread Starter
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 47
From: Helotes TEXAS
You need to use LS2 rails, but you need to make sure you're injectors fit the cups, and I believe they are too short to reach thier seats without modification. You also will need a LS1 to LS2 wiring harness adapter. It's not a very good mod for your car, IMO. Do you have a returnless fuel system? If you haven't already bought it, you're better off with a LS6 mani, or FAST, which'll need the harness, but uses your fuel rail/injectors. (FAST 90). I don't know about the newer Wilsons.
So with that said, thanks for the input and it looks like I need to chase down some LS2 fuel rails, harnesses and injectors.
Team Owner
Joined: May 2001
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From: Dear Karma, I have a list of people you missed.
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fuel rails for an LS2 and injectors I can get. LS6 intakes don't take 90mm TB's and FAST 90's are far and few between. Plus anyone that has one for sale, used, still wants an arm and a leg for them.
So with that said, thanks for the input and it looks like I need to chase down some LS2 fuel rails, harnesses and injectors.
So with that said, thanks for the input and it looks like I need to chase down some LS2 fuel rails, harnesses and injectors.
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
fuel rails for an LS2 and injectors I can get. LS6 intakes don't take 90mm TB's and FAST 90's are far and few between. Plus anyone that has one for sale, used, still wants an arm and a leg for them.
So with that said, thanks for the input and it looks like I need to chase down some LS2 fuel rails, harnesses and injectors.
So with that said, thanks for the input and it looks like I need to chase down some LS2 fuel rails, harnesses and injectors.
Thread Starter
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 47
From: Helotes TEXAS
Tech Contributor
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From: Dyer, IN
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