LT1 swap
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Joined: Sep 2014
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LT1 swap What's up guys. I know this question has been beat to death. But I have a 1986 Cutlass. I want to swap a lt1 in. I already have the chevy set up. I have a lt1 out of a 94 caprice and a lt1 from a 94 firebird. I need to know which one of those will work best as far as the front accessories go cause i've read that certain lt1's wont clear the frame rails? I want to keep it fuel injected so what parts would I need to keep it fuel injected I have a plug and play harness ready to go I have the 4l60e transmission the ecu everything. As far as the fuel system goes how do I go about setting that up. Any input is appreciated. thanks guys.
Teching In
Joined: Feb 2014
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I did an LT1 swap into an 85 Monte SS. To run A/C compressor in the stock location as dictated by the LT1 accessory bracket, you have to notch the frame pretty seriously. The passenger motor mount will be mounted further back on the LT1 block also, so it doesn't just bolt to the cross member. If you look at the passenger side of the LT1 block the motor mount can be mounted in two locations. The forward location is the stock small block location. The rear location is to clear the B/F body ac compressor. If you delete the A/C compressor, you can put the passenger motor mount in the regular small block location. You still have to do a small notch in the frame for the A/C compressor delete pulley. That is what I did.
For fuel system, see if you can find a fuel injected G-body pump and sending unit. I ran an external fuel pump myself. It is incredibly noisy. I had to modify the pickup too. I don't recommend it at all. You will also want to run new fuel lines. The stock return line isn't big enough to return all the fuel of the high flow pump.
If you can't find a fuel injected G-body pump and sending unit, I've seen people add an additional access hole to the tank and install an airtex or aeromotive pump. That way you can still have your stock fuel level sending unit.
For fuel system, see if you can find a fuel injected G-body pump and sending unit. I ran an external fuel pump myself. It is incredibly noisy. I had to modify the pickup too. I don't recommend it at all. You will also want to run new fuel lines. The stock return line isn't big enough to return all the fuel of the high flow pump.
If you can't find a fuel injected G-body pump and sending unit, I've seen people add an additional access hole to the tank and install an airtex or aeromotive pump. That way you can still have your stock fuel level sending unit.
Teching In
Joined: Aug 2014
Posts: 21
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From: Charlotte
I put a 1997 Trans-Am LT-1 in my 1966 Chevelle with no problems as far as accessory clearances. However I used 1995 exhaust manifolds.
I would recommend to replace the tank with a FI tank that has the fuel pump in tank. Tanks INC has all kinds of stuff.
http://www.tanksinc.com/
I would recommend to replace the tank with a FI tank that has the fuel pump in tank. Tanks INC has all kinds of stuff.
http://www.tanksinc.com/
