Air filter box
Thread Starter
Melting Slicks
Joined: Mar 2016
Posts: 2,778
Likes: 580
From: Langley BC
Air filter box
I am getting ready to do a MAF to MAP cpnversion on my 88' because I am going to swap computer systems.
So I am trying to decide what to do with the air intake from the throttle body forward.
My engine is modded so I think the small diameter of the stock MAF was a bit of restriction.
I was thinking of putting a 1990-1996 Air filter box, with a 1990-1991 coupler (throttle body to filter box).
Will the later style air filter box fit over the early style radiator shroud? ( I know the mounting bolt points are different). Anyone done this?
I have seen a picture of the SLP claw intake on an early C4 but that is kind of expensive for little to no HP gain vs a late style filter box.
My air filter box is broken anyway so I need to replace it regardless.
Thanks for any help.
So I am trying to decide what to do with the air intake from the throttle body forward.
My engine is modded so I think the small diameter of the stock MAF was a bit of restriction.
I was thinking of putting a 1990-1996 Air filter box, with a 1990-1991 coupler (throttle body to filter box).
Will the later style air filter box fit over the early style radiator shroud? ( I know the mounting bolt points are different). Anyone done this?
I have seen a picture of the SLP claw intake on an early C4 but that is kind of expensive for little to no HP gain vs a late style filter box.
My air filter box is broken anyway so I need to replace it regardless.
Thanks for any help.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
I think your solution is a good one; the later air box with the '90-'91 ducting.
What is involved with swapping to MAP? I was to ditch the MAF on the 'Vette Kart. It hangs off the front of the motor like a limp d--k.
What is involved with swapping to MAP? I was to ditch the MAF on the 'Vette Kart. It hangs off the front of the motor like a limp d--k.
Thread Starter
Melting Slicks
Joined: Mar 2016
Posts: 2,778
Likes: 580
From: Langley BC
Yes, as long as the later filter box fits under the hood then I think it will work well, just can't seem to find any reference to if it will fit under or not with the early fan shroud?
I am going to do the EBL flash computer swap which requires switching from MAF to MAP. My EBL kit should arrive at the end of this week with instructions on exactly how to do the swap, So I will have a better idea once it arrives exactly what is required. But from what I hear it uses the existing MAF wiring and us fairly strait forward... I'll update once I do the swap with the details.
I am going to do the EBL flash computer swap which requires switching from MAF to MAP. My EBL kit should arrive at the end of this week with instructions on exactly how to do the swap, So I will have a better idea once it arrives exactly what is required. But from what I hear it uses the existing MAF wiring and us fairly strait forward... I'll update once I do the swap with the details.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Thread Starter
Melting Slicks
Joined: Mar 2016
Posts: 2,778
Likes: 580
From: Langley BC
Ya hopefully someone one here has tried to do this swap, worst case I guess if it doesn't fit I can make an air filter box, but it would be a lot less work to just use a later style box if it fits...
I was suprised when I searched around there was nothing on this subject of the air filter box swaps, other than that a magazine had used an SLP claw intake on an LS swap early C4 corvette but they said it didn't just bolt up and took some adjustments....
I was suprised when I searched around there was nothing on this subject of the air filter box swaps, other than that a magazine had used an SLP claw intake on an LS swap early C4 corvette but they said it didn't just bolt up and took some adjustments....
Instructor
Joined: Aug 2007
Posts: 144
Likes: 4
From: Chandler Arizona
I did the claw swap when I changed my computer over to the holley efi on my 88. I had to cut a bit from the front of the radiator shroud to make room for the claw to clear the hood and drill new bolt holes.
It would be a tight fit with the newer air box but it might be able to fit without modification, at least under the hood since it is shorter then the claw.
One thing that I found out with the coupler is that it sits a tad funny with the stock thermostat housing under it.
I hope this helps. if you need measurements of the claw to compare or modifications I did, let me know.
Good luck on your swap!
It would be a tight fit with the newer air box but it might be able to fit without modification, at least under the hood since it is shorter then the claw.
One thing that I found out with the coupler is that it sits a tad funny with the stock thermostat housing under it.
I hope this helps. if you need measurements of the claw to compare or modifications I did, let me know.
Good luck on your swap!
Thread Starter
Melting Slicks
Joined: Mar 2016
Posts: 2,778
Likes: 580
From: Langley BC
I did the claw swap when I changed my computer over to the holley efi on my 88. I had to cut a bit from the front of the radiator shroud to make room for the claw to clear the hood and drill new bolt holes.
It would be a tight fit with the newer air box but it might be able to fit without modification, at least under the hood since it is shorter then the claw.
One thing that I found out with the coupler is that it sits a tad funny with the stock thermostat housing under it.
I hope this helps. if you need measurements of the claw to compare or modifications I did, let me know.
Good luck on your swap!
It would be a tight fit with the newer air box but it might be able to fit without modification, at least under the hood since it is shorter then the claw.
One thing that I found out with the coupler is that it sits a tad funny with the stock thermostat housing under it.
I hope this helps. if you need measurements of the claw to compare or modifications I did, let me know.
Good luck on your swap!
Your engine looks awesome!
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Racer
Joined: Jun 2017
Posts: 311
Likes: 24
From: Ohio
I know you said yours is broken but have you thought about just using a long silicone tube or aluminum tube? Is the maf the only thing that you think is restricting air flow or do you think its the box too? I was thinking about using your style air box for my car but if you are concerned about air flow then so would I haha
Thread Starter
Melting Slicks
Joined: Mar 2016
Posts: 2,778
Likes: 580
From: Langley BC
I know you said yours is broken but have you thought about just using a long silicone tube or aluminum tube? Is the maf the only thing that you think is restricting air flow or do you think its the box too? I was thinking about using your style air box for my car but if you are concerned about air flow then so would I haha
However on the Later L98 and LT1 cars the 'pinch' in the intake track was eliminated... I have to think that Chevy enlarged the intake tubing because it was a bit of a restriction. Maybe its not much of an issue at stock HP but for our cars I could definetly see gaining a small amount of HP with a larger intake tube ( just my opinion). It also always seemed strange to me to see the MAF tube so small compared to the throttlebody I haven't seen that on any other cars.
So in short I was wanting to use the later style intake box and tube to elminate any potental restrictions with the early style intake. Not sure if it will gain much but I would guess we would see a small gain, and the later style looks better IMHO.
Racer
Joined: Jun 2017
Posts: 311
Likes: 24
From: Ohio
Ahh ok, just wondering! It does look a little restrictive. When you get the new filter box update us and take lots of pics like you normally do as I will probably be doing the same upgrade. I thought about building my own which would be cool and probably look better IMO but why recreate the wheel ya know.
Also, when I get my tune worked out a little more I will adjust it for your car and send it to you so you'll be mostly done before you even begin!
Also, when I get my tune worked out a little more I will adjust it for your car and send it to you so you'll be mostly done before you even begin!
Thread Starter
Melting Slicks
Joined: Mar 2016
Posts: 2,778
Likes: 580
From: Langley BC
That would be wonderful, thank you.
Yes once I figure out the air filter box issue I will update. Allout1 is going do some measurements of his stock 96 box for me to make sure it will fit between the shroud and the hood.
Yes once I figure out the air filter box issue I will update. Allout1 is going do some measurements of his stock 96 box for me to make sure it will fit between the shroud and the hood.
Thread Starter
Melting Slicks
Joined: Mar 2016
Posts: 2,778
Likes: 580
From: Langley BC
Hi Guy's thought I would give an answer to this thread.
I went out to a guy's house today who was parting out an 86' and a 95' corvette. Unfortunatly the air filter box on the 95' was broken when I looked at it (he didn't mention it when I asked about it on the phone
But I did have a chance to briefly compare the two styles of fikter box... it doen't look to me like a late box will work very well on am early car. The issue is that the filter boxes on these cars come up and over the radiators, but the angle they bend at to go over the radiators is different. So if you put a late box on an early car the filter part will end up squished up near the hood. It Might fit but it would proabbly have poor flow into the filter which would negate any gains in flow from eliminating the 'necked down' part of the early car's intake track.
I went out to a guy's house today who was parting out an 86' and a 95' corvette. Unfortunatly the air filter box on the 95' was broken when I looked at it (he didn't mention it when I asked about it on the phone
But I did have a chance to briefly compare the two styles of fikter box... it doen't look to me like a late box will work very well on am early car. The issue is that the filter boxes on these cars come up and over the radiators, but the angle they bend at to go over the radiators is different. So if you put a late box on an early car the filter part will end up squished up near the hood. It Might fit but it would proabbly have poor flow into the filter which would negate any gains in flow from eliminating the 'necked down' part of the early car's intake track.
Safety Car
Joined: Nov 2009
Posts: 3,970
Likes: 340
From: Adelaide South Australia
Hi Guy's thought I would give an answer to this thread.
I went out to a guy's house today who was parting out an 86' and a 95' corvette. Unfortunatly the air filter box on the 95' was broken when I looked at it (he didn't mention it when I asked about it on the phone But I did have a chance to briefly compare the two styles of fikter box... it doen't look to me like a late box will work very well on am early car. The issue is that the filter boxes on these cars come up and over the radiators, but the angle they bend at to go over the radiators is different. So if you put a late box on an early car the filter part will end up squished up near the hood. It Might fit but it would proabbly have poor flow into the filter which would negate any gains in flow from eliminating the 'necked down' part of the early car's intake track.
I went out to a guy's house today who was parting out an 86' and a 95' corvette. Unfortunatly the air filter box on the 95' was broken when I looked at it (he didn't mention it when I asked about it on the phone
But I did have a chance to briefly compare the two styles of fikter box... it doen't look to me like a late box will work very well on am early car. The issue is that the filter boxes on these cars come up and over the radiators, but the angle they bend at to go over the radiators is different. So if you put a late box on an early car the filter part will end up squished up near the hood. It Might fit but it would proabbly have poor flow into the filter which would negate any gains in flow from eliminating the 'necked down' part of the early car's intake track.
Drifting
Joined: Jun 2020
Posts: 1,690
Likes: 726
From: Stay dangerous my friends
Drifting
Joined: Apr 2011
Posts: 1,925
Likes: 441
From: Albuquerque NM
I did the claw swap when I changed my computer over to the holley efi on my 88. I had to cut a bit from the front of the radiator shroud to make room for the claw to clear the hood and drill new bolt holes.
It would be a tight fit with the newer air box but it might be able to fit without modification, at least under the hood since it is shorter then the claw.
One thing that I found out with the coupler is that it sits a tad funny with the stock thermostat housing under it.
I hope this helps. if you need measurements of the claw to compare or modifications I did, let me know.
Good luck on your swap!
It would be a tight fit with the newer air box but it might be able to fit without modification, at least under the hood since it is shorter then the claw.
One thing that I found out with the coupler is that it sits a tad funny with the stock thermostat housing under it.
I hope this helps. if you need measurements of the claw to compare or modifications I did, let me know.
Good luck on your swap!
Some more pictures of the install and any modifications and or clearancing that you did would be super helpful!