What air cleaner will fit? - CorvetteForum - Chevrolet Corvette Forum Discussion


C1 & C2 Corvettes
General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations
Sponsored by:
Sponsored by:

What air cleaner will fit?

Reply
 
 
 
Thread Tools Search this Thread
Old 04-14-2017, 09:13 PM   #1
PPCPete
Junior Member
Thread Starter
 
Member Since: Apr 2007
Posts: 13
Thanked 0 Times in 0 Posts
Default What air cleaner will fit?

I have a 1963 corvette with a 327 and a replacement intake manifold.
It has a stock hood. Does anyone know what Air Cleaner will fit under the hood? Replacement aftermarket air cleaner such as MR. Gasket or something from summit Racing????
It has a 4BBL Holley Carb 650cfm.

Pictures and or part numbers or spec. on hood clearance would be helpful.

Thank You!
PPCPete is offline   Reply With Quote
Old 04-14-2017, 09:52 PM   #2
Nowhere Man
CF Senior Member
C2 of Month Finalist 2015
 
Nowhere Man's Avatar
 
Member Since: Feb 2003
Location: Sitting in his Nowhere land Hanover Pa
Posts: 28,628
Thanked 709 Times in 676 Posts
Default

You can start by telling us the make and model intake and carb
Nowhere Man is offline   Reply With Quote
Old 04-19-2017, 09:38 PM   #3
PPCPete
Junior Member
Thread Starter
 
Member Since: Apr 2007
Posts: 13
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by Nowhere Man View Post
You can start by telling us the make and model intake and carb
Its a Holly 600cfm 4bbl..with a Cyclone brand replacement intake manifold. ( #52001)
PPCPete is offline   Reply With Quote
Old 04-19-2017, 10:13 PM   #4
fredski
CF Senior Member
 
fredski's Avatar
 
Member Since: Dec 2010
Location: iroquois ontario
Posts: 176
Thanked 4 Times in 4 Posts
Default

Quote:
Originally Posted by PPCPete View Post
I have a 1963 corvette with a 327 and a replacement intake manifold.
It has a stock hood. Does anyone know what Air Cleaner will fit under the hood? Replacement aftermarket air cleaner such as MR. Gasket or something from summit Racing????
It has a 4BBL Holley Carb 650cfm.

Pictures and or part numbers or spec. on hood clearance would be helpful.

Thank You!
Not hard to find ,check summit or jegs ,they have drop down air filters that are lower . Also gm made this type In the late 60's .i have holly 650 double pumper elec choke on a eldebrock rpm manifold and fits fine on my stock 63 hood. Phone suppliers and explain what you need .
Must use a 3 inch high or 2/12 high available from KandN ( filter)
Fred g

Last edited by fredski; 04-19-2017 at 10:17 PM. Reason: More info
fredski is offline   Reply With Quote
The Following User Says Thank You to fredski For This Useful Post:
PPCPete (04-20-2017)
Old 04-20-2017, 02:41 PM   #5
DucatiDon
CF Senior Member
 
DucatiDon's Avatar
 
Member Since: Oct 2011
Location: Sacramento California
Posts: 2,470
Thanked 31 Times in 30 Posts
Default

65+ factory drop base fits fine.
DucatiDon is offline   Reply With Quote
The Following User Says Thank You to DucatiDon For This Useful Post:
PPCPete (04-20-2017)
Old 04-20-2017, 04:01 PM   #6
fredski
CF Senior Member
 
fredski's Avatar
 
Member Since: Dec 2010
Location: iroquois ontario
Posts: 176
Thanked 4 Times in 4 Posts
Default

Quote:
Originally Posted by PPCPete View Post
I have a 1963 corvette with a 327 and a replacement intake manifold.
It has a stock hood. Does anyone know what Air Cleaner will fit under the hood? Replacement aftermarket air cleaner such as MR. Gasket or something from summit Racing????
It has a 4BBL Holley Carb 650cfm.

Pictures and or part numbers or spec. on hood clearance would be helpful.

Thank You!
Summit racing part number ALL26092. Look up on line ,shows picture then you will understand . I have a gM version of this.

Fredski
fredski is offline   Reply With Quote
The Following User Says Thank You to fredski For This Useful Post:
PPCPete (04-20-2017)
Old 04-21-2017, 08:07 AM   #7
Frankie the Fink
CF Senior Member
Support Corvetteforum!
 
Frankie the Fink's Avatar
 
Member Since: Aug 2007
Location: Orlando Metro Area Florida
Posts: 36,252
Thanked 1,438 Times in 1,219 Posts
Default

No matter what you cobble together check the hood clearance yourself before buying off on the changes. Tin foil and painter's tape work well.
Attached Images
 

Last edited by Frankie the Fink; 04-21-2017 at 08:07 AM.
Frankie the Fink is offline   Reply With Quote
The Following 2 Users Say Thank You to Frankie the Fink For This Useful Post:
Dave64 (04-23-2017), PPCPete (04-24-2017)
Old 04-21-2017, 08:16 AM   #8
Easy Rhino
CF Senior Member
 
Easy Rhino's Avatar
 
Member Since: Apr 2008
Location: Chesapeake Virginia
Posts: 17,414
Thanked 299 Times in 250 Posts
Default

Quote:
Originally Posted by Frankie the Fink View Post
No matter what you cobble together check the hood clearance yourself before buying off on the changes. Tin foil and painter's tape work well.
Much better than using clay to check clearances.
Easy Rhino is offline   Reply With Quote
Old 04-21-2017, 09:39 AM   #9
65tripleblack
CF Senior Member
 
65tripleblack's Avatar
 
Member Since: May 2003
Location: Ocean Township NJ
Posts: 4,254
Thanked 138 Times in 124 Posts
Default

Quote:
Originally Posted by Frankie the Fink View Post
No matter what you cobble together check the hood clearance yourself before buying off on the changes. Tin foil and painter's tape work well.
No good.

The closest point of contact is at 2:00 position if you look at the air cleaner lid from the back of the car, or through the windshield. The "tin" foil ***** should be positioned across and slightly ahead of the centerline, not fore-aft.
65tripleblack is offline   Reply With Quote
Old 04-21-2017, 01:24 PM   #10
GearheadJoe
CF Senior Member
Support Corvetteforum!
 
GearheadJoe's Avatar
 
Member Since: Jul 2014
Location: Massachusetts
Posts: 364
Thanked 71 Times in 61 Posts
Default

Quote:
Originally Posted by 65tripleblack View Post
No good.

The closest point of contact is at 2:00 position if you look at the air cleaner lid from the back of the car, or through the windshield. The "tin" foil ***** should be positioned across and slightly ahead of the centerline, not fore-aft.

This is correct. The photo below shows the closest contact point for the stock C2 air cleaner and hood.

At first I was surprised that this happens on only one side, but the reason is that the entire engine is offset about one inch toward the passenger side.
Attached Images
 
GearheadJoe is offline   Reply With Quote
Old 04-21-2017, 01:33 PM   #11
Frankie the Fink
CF Senior Member
Support Corvetteforum!
 
Frankie the Fink's Avatar
 
Member Since: Aug 2007
Location: Orlando Metro Area Florida
Posts: 36,252
Thanked 1,438 Times in 1,219 Posts
Default

Quote:
Originally Posted by GearheadJoe View Post
This is correct. The photo below shows the closest contact point for the stock C2 air cleaner and hood.

At first I was surprised that this happens on only one side, but the reason is that the entire engine is offset about one inch toward the passenger side.
It was an EXAMPLE folks. I defend your right to put your ***** anywhere you like.

Im well aware of the "touch points" on these cars, chiefly at the rear of the PS dual snorkel extension tube when you try to put heat insulators under the carb.
Frankie the Fink is offline   Reply With Quote
Old 04-21-2017, 02:39 PM   #12
GearheadJoe
CF Senior Member
Support Corvetteforum!
 
GearheadJoe's Avatar
 
Member Since: Jul 2014
Location: Massachusetts
Posts: 364
Thanked 71 Times in 61 Posts
Default

Quote:
Originally Posted by GearheadJoe View Post
This is correct. The photo below shows the closest contact point for the stock C2 air cleaner and hood.

At first I was surprised that this happens on only one side, but the reason is that the entire engine is offset about one inch toward the passenger side.

I found another photo that shows the corresponding location of the interference (indicated by the blue tape) on the 1967 air cleaner. It is possible that earlier C2 air cleaners would have issues in other locations, but on my '67 this is the place where the air cleaner comes closest to the hood. On a stock L79 with the L79 intake and 3810 Holley carb, the hood clearance is about 3/8" to 1/2".

The OEM '66-'67 Corvette air cleaner assembly is a "drop-down" unit that is intended to provide good hood clearance. If you assemble the top and bottom sheet metal parts off the car, you will see that there is a pretty small gap (about one inch) between the lid and the opening for the carburetor throat, so this is close to becoming an air restriction.

Some aftermarket drop-down air cleaners gain additional hood clearance by further reducing this gap. It would be a good idea to check this gap prior to installing an aftermarket drop-down air cleaner. There's no sense choking the air flow to the carb just to get some extra hood clearance.
Attached Images
 
GearheadJoe is offline   Reply With Quote
Old 04-21-2017, 04:32 PM   #13
Blk63Vette
CF Senior Member
 
Blk63Vette's Avatar
 
Member Since: Dec 2005
Location: Sarasota Florida
Posts: 2,519
Thanked 20 Times in 16 Posts
Default

Quote:
Originally Posted by Frankie the Fink View Post
It was an EXAMPLE folks. I defend your right to put your ***** anywhere you like.

Im well aware of the "touch points" on these cars, chiefly at the rear of the PS dual snorkel extension tube when you try to put heat insulators under the carb.
I'm with Frankie I feel you have a right to put your ***** where ever you want!!
Blk63Vette is offline   Reply With Quote
Old 04-22-2017, 12:55 PM   #14
65tripleblack
CF Senior Member
 
65tripleblack's Avatar
 
Member Since: May 2003
Location: Ocean Township NJ
Posts: 4,254
Thanked 138 Times in 124 Posts
Default

Quote:
Originally Posted by GearheadJoe View Post
I found another photo that shows the corresponding location of the interference (indicated by the blue tape) on the 1967 air cleaner. It is possible that earlier C2 air cleaners would have issues in other locations, but on my '67 this is the place where the air cleaner comes closest to the hood. On a stock L79 with the L79 intake and 3810 Holley carb, the hood clearance is about 3/8" to 1/2".

The OEM '66-'67 Corvette air cleaner assembly is a "drop-down" unit that is intended to provide good hood clearance. If you assemble the top and bottom sheet metal parts off the car, you will see that there is a pretty small gap (about one inch) between the lid and the opening for the carburetor throat, so this is close to becoming an air restriction.

Some aftermarket drop-down air cleaners gain additional hood clearance by further reducing this gap. It would be a good idea to check this gap prior to installing an aftermarket drop-down air cleaner. There's no sense choking the air flow to the carb just to get some extra hood clearance.
Hi Joe,
You may already know this, but there is a limit to how much drop can be designed into an air cleaner before air flow problems negate the effects of a larger air cleaner height. The culprits are the vent stacks, and if they are less than about 3/8" below the underside of the lid, then float bowl reference pressures are affected and starvation problems can develop at high airflow rates. Doesn't matter much whether the tubes are angle cut or not.
65tripleblack is offline   Reply With Quote
Old 04-22-2017, 03:17 PM   #15
GearheadJoe
CF Senior Member
Support Corvetteforum!
 
GearheadJoe's Avatar
 
Member Since: Jul 2014
Location: Massachusetts
Posts: 364
Thanked 71 Times in 61 Posts
Default

Quote:
Originally Posted by 65tripleblack View Post
Hi Joe,
You may already know this, but there is a limit to how much drop can be designed into an air cleaner before air flow problems negate the effects of a larger air cleaner height. The culprits are the vent stacks, and if they are less than about 3/8" below the underside of the lid, then float bowl reference pressures are affected and starvation problems can develop at high airflow rates. Doesn't matter much whether the tubes are angle cut or not.

Hi Joe:

Thanks, I did not know that was another limiting factor with drop-down air cleaners. My guess is that the stock C2 air cleaner probably pushes this parameter to the limit as well.

I recall talking to a guy who did a chassis dyno test on a car that had an extreme version of a drop-down air cleaner. Simply removing the air cleaner lid added about 25 HP. I suppose that the difference could be due to restriction in the air cleaner element, but I bet most of it was due to the low height of the lid.
GearheadJoe is offline   Reply With Quote
Old 04-22-2017, 05:20 PM   #16
65tripleblack
CF Senior Member
 
65tripleblack's Avatar
 
Member Since: May 2003
Location: Ocean Township NJ
Posts: 4,254
Thanked 138 Times in 124 Posts
Default

Quote:
Originally Posted by GearheadJoe View Post
Hi Joe:

Thanks, I did not know that was another limiting factor with drop-down air cleaners. My guess is that the stock C2 air cleaner probably pushes this parameter to the limit as well.

I recall talking to a guy who did a chassis dyno test on a car that had an extreme version of a drop-down air cleaner. Simply removing the air cleaner lid added about 25 HP. I suppose that the difference could be due to restriction in the air cleaner element, but I bet most of it was due to the low height of the lid.

That would be my guess as well; his A/F might have gone lean for the reason mentioned. I did cut about 1/4" off the vent stacks on my QF carb to obtain the minimum 3/8" clearance!

I would say that hif filter was not a new one, or was restricted in some other way. Was it a 14" x 3" paper element as stock 1966 up SBC? I modeled my engine as is (14 x 3) vs 14 x 4 using EA Pro 3.5 and produced a negligible difference across the board. The difference obtained by cold air induction (no ram effect) was dramatic, as I fully expected..

Last edited by 65tripleblack; 04-22-2017 at 05:21 PM.
65tripleblack is offline   Reply With Quote
Old 04-22-2017, 05:24 PM   #17
65tripleblack
CF Senior Member
 
65tripleblack's Avatar
 
Member Since: May 2003
Location: Ocean Township NJ
Posts: 4,254
Thanked 138 Times in 124 Posts
Default

Quote:
Originally Posted by GearheadJoe View Post
Hi Joe:

Thanks, I did not know that was another limiting factor with drop-down air cleaners. My guess is that the stock C2 air cleaner probably pushes this parameter to the limit as well.

I recall talking to a guy who did a chassis dyno test on a car that had an extreme version of a drop-down air cleaner. Simply removing the air cleaner lid added about 25 HP. I suppose that the difference could be due to restriction in the air cleaner element, but I bet most of it was due to the low height of the lid.

That would be my guess as well; I did cut about 1/4" off the vent stacks on my QF carb to obtain the minimum 3/8" clearance.

I would say that his filter was not a new one, or was restricted in some other way. Was it a 14" x 3" paper element as stock 1966 up SBC? Check his A/F ratio plot if he has one. Possible the mixture might have gone leaner than it normally does on the top end due to this exact phenomenon and/or dirty filter. Our friend the Duck recommends Baldwin filters.

I modeled my engine as is (14 x 3) vs 14 x 4 using EA Pro 3.5 and produced a negligible difference across the board. The difference obtained by cold air induction (no ram effect) was dramatic.

Last edited by 65tripleblack; 04-22-2017 at 05:26 PM.
65tripleblack is offline   Reply With Quote
Old 04-22-2017, 06:49 PM   #18
GearheadJoe
CF Senior Member
Support Corvetteforum!
 
GearheadJoe's Avatar
 
Member Since: Jul 2014
Location: Massachusetts
Posts: 364
Thanked 71 Times in 61 Posts
Default

Quote:
Originally Posted by 65tripleblack View Post
That would be my guess as well; his A/F might have gone lean for the reason mentioned. I did cut about 1/4" off the vent stacks on my QF carb to obtain the minimum 3/8" clearance!

I would say that hif filter was not a new one, or was restricted in some other way. Was it a 14" x 3" paper element as stock 1966 up SBC? I modeled my engine as is (14 x 3) vs 14 x 4 using EA Pro 3.5 and produced a negligible difference across the board. The difference obtained by cold air induction (no ram effect) was dramatic, as I fully expected..

The story about the 25 HP loss was just something a guy mentioned to me in conversation, so I don't know the specifics of the air cleaner that was involved. I do recall that he was convinced that the problem was a very small clearance between the lid and base of the air cleaner. It was an aftermarket dropped-base air cleaner that had probably been optimized for a low height, without regard to possible consequences of dropping the lid too far.
GearheadJoe is offline   Reply With Quote
Old 04-22-2017, 07:20 PM   #19
65tripleblack
CF Senior Member
 
65tripleblack's Avatar
 
Member Since: May 2003
Location: Ocean Township NJ
Posts: 4,254
Thanked 138 Times in 124 Posts
Default

Quote:
Originally Posted by GearheadJoe View Post
The story about the 25 HP loss was just something a guy mentioned to me in conversation, so I don't know the specifics of the air cleaner that was involved. I do recall that he was convinced that the problem was a very small clearance between the lid and base of the air cleaner. It was an aftermarket dropped-base air cleaner that had probably been optimized for a low height, without regard to possible consequences of dropping the lid too far.
Before I decided to use a GM drop base air cleaner, I was looking at aftermarket choices. As with anything else in life, once the lemmings begin to "pile on" to a good idea, the exploitation and grotesque results quickly spin out of control. I was looking at "spun aluminum" drop bases which may no longer exist, or was gobbled up by another snake oil aftermarket conglomerate. I decided not to buy their product after taking measurements and finding that there would be clearance issues on the upper end. The "spun aluminum" base offered a "drop" just about 1/4" more than the stock GM Corvette drop bases did. This would have caused interference with my carburetors' bowl vent stacks...............putting them just about flush with the underside a stock Chevy Corvette 1965-up BBC/SBC lid. As I said earlier, I had to cut down the stacks on my QF carb, which, incidentally, are probably designed with extra length and shortening allowed to tailor to varying air cleaner lid clearances. Looking at a Holley carb from the era, the stacks are lower than those on the QF. Set to less than/equal to the min clearance required which is about 3/8" when used with a stock drop-base air cleaner.

Last edited by 65tripleblack; 04-22-2017 at 07:24 PM.
65tripleblack is offline   Reply With Quote
Old 04-23-2017, 01:40 AM   #20
Dave64
CF Senior Member
 
Dave64's Avatar
 
Member Since: Jul 2005
Location: Avondale Arizona
Posts: 896
Thanked 7 Times in 7 Posts
Default

Quote:
Originally Posted by GearheadJoe View Post
This is correct. The photo below shows the closest contact point for the stock C2 air cleaner and hood.

At first I was surprised that this happens on only one side, but the reason is that the entire engine is offset about one inch toward the passenger side.
Roger that. Who doesn't have a mark on their hood in this spot ?
Dave64 is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • What air cleaner will fit?
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    1974 454 air cleaner/filter hood clearance bballboy06 C3 Tech/Performance 2 07-25-2017 02:06 PM
    air cleaners Philip Boucher C1 & C2 Corvettes 1 07-07-2016 07:02 PM
    73 BB Air Cleaner Replacement Saddlehorn C3 Tech/Performance 1 03-30-2016 02:11 PM
    Best way to attach hood cleaner seal on a 1973? 73 L82 C3 Tech/Performance 2 01-31-2016 12:21 PM
    Replacing the Quadrajet carb with a Edelbrock carb swolfermk C3 Tech/Performance 10 10-21-2015 08:01 PM


    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump

    Sponsored Ads
    Vendor Directory

    All times are GMT -4. The time now is 03:06 AM.


     
    • Ask a Question
      Get answers from community experts
    Question Title:
    Description:
    Your question will be posted in: