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Username Post: Ls swap, air intake question        (Topic#369135)
63impala 
Senior Member
Posts: 817

Loc: surrey,canada b.c.
Reg: 12-15-01
08-04-22 04:25 PM - Post#2845457    

Finishing up the ls swap on the 1963 impala. What did everyone else do when it came to air intake systems? I don't see an aftermarket swap kit available. I've had some success with piecing a setup together. But it is costly. Any suggestions would be greatly appreciated.



 


AK62 
"6th Year" Silver Supporting Member
Posts: 100
AK62
Loc: Rogers, MN
Reg: 01-23-16
08-04-22 06:20 PM - Post#2845464    
    In response to 63impala

I bought the GM Performance air intake kit as it was easy. I used the 90 and straight section that mounts the mass air flow sensor. I used a 30 degree rubber coupler from Spectre to add some clearance at the radiator and turn the air filter to better fit at the inner fender. I replaced the paper filter with a K&N filter that was a little smaller. I don't remember if the boot at the throttle body was part of the kit. The GM Performance kit was stupidly expensive and I have to think you could find similar parts cheaper. The intake tube is supported at the radiator. I installed a 4L80E and moved the engine about as far forward as possible. As a result I didn't have a lot of room between the engine and radiator.

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AK62 
"6th Year" Silver Supporting Member
Posts: 100
AK62
Loc: Rogers, MN
Reg: 01-23-16
08-04-22 06:25 PM - Post#2845465    
    In response to 63impala

One other thing I'll mention. I used the GM Performance computer which uses the mass air flow sensor. I ended up putting an "air flow straightener" in the intake tube before the mass air flow sensor. The car was super rich at idle initially. The straightener cleaned up the idle considerably. And this was with following the recommended distances between the air flow sensor and throttle body and air cleaner.



 
Tony1963 
Frequent Contributor
Posts: 1597

Loc: Orlando Florida
Reg: 07-09-18
08-05-22 06:57 AM - Post#2845490    
    In response to AK62

Those aftermarket systems would benefit from pulling the air outside of the engine compartment.

Doing so would require that you duct the air intake somewhere so that the engine could breathe cold air rather than 200 degree air.



People fear change because it threatens what they know, or what they claim to know.


 
AK62 
"6th Year" Silver Supporting Member
Posts: 100
AK62
Loc: Rogers, MN
Reg: 01-23-16
08-05-22 07:08 PM - Post#2845526    
    In response to Tony1963

The air cleaner is almost behind the headlights and well past the radiator. Going down the road there is plenty of air that leaks past the headlight trim. IAT runs 20-30 degrees above the outside temp. It gets warm at a stop but cools off again when moving.



 


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