Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

clearance pictures.. something cant be right??

Thread Tools
 
Search this Thread
 
Old Dec 5, 2006 | 07:37 PM
  #1  
maroon88iroc's Avatar
Thread Starter
Supreme Member
iTrader: (7)
 
Joined: Mar 2005
Posts: 1,926
Likes: 3
From: mid GA
Car: 88 IROC
Engine: 305 TPI w/ l98 cam
Transmission: T5 5-speed
Axle/Gears: 3.45 posi disc 9 bolt
clearance pictures.. something cant be right??





see how close it is. and this is a 1 inch filter. it is a drop base but idk what size. i can meassure it ill do that in a min. but as you can see the top plate is above the master cylinder, it is very close on the hood and i still have to ad a 1/2 inch spacer under the carb and idk how im going to be able to do that with how high it is sitting right now...

any and all help will be appreciated.
Reply
Old Dec 5, 2006 | 09:40 PM
  #2  
rjt76's Avatar
Member
 
Joined: Sep 2005
Posts: 483
Likes: 0
From: maine
Car: 1986 iroc z
Engine: vortec 383
Transmission: th350
Axle/Gears: 3.73 moser 12 bolt true trac
What intake is that? You are not going to be able to use any spacers with that carb and stock hood. You will need a 1/3/8 or so drop filter assembly with a 3 inch filter. That 1 inch wont feed my lawn tractor.
Reply
Old Dec 5, 2006 | 09:47 PM
  #3  
RandyZ's Avatar
Member
 
Joined: Feb 2006
Posts: 251
Likes: 0
From: warwick
Car: 1983 & 1993 camaro z28
Engine: 5.0 carbed/ LT1 injected
Transmission: T5/auto
Axle/Gears: 373/posi
yea ditch the spacer it will give you the hood clearance you need when using a carb on these cars a low intake is the best i have a tourker 2 intake with 3inch air filter workers great
Reply
Old Dec 5, 2006 | 10:35 PM
  #4  
xpndbl3's Avatar
Supreme Member
iTrader: (5)
 
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
i fit a performer rpm and a vic jr under my stock hood no problem, too bad the new motor is too tall
Reply
Old Dec 6, 2006 | 05:22 AM
  #5  
JamesC's Avatar
Moderator
25 Year Member
Liked
Loved
iTrader: (5)
 
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Originally Posted by rjt76
That 1 inch wont feed my lawn tractor.


JamesC
Reply
Old Dec 6, 2006 | 09:40 AM
  #6  
maroon88iroc's Avatar
Thread Starter
Supreme Member
iTrader: (7)
 
Joined: Mar 2005
Posts: 1,926
Likes: 3
From: mid GA
Car: 88 IROC
Engine: 305 TPI w/ l98 cam
Transmission: T5 5-speed
Axle/Gears: 3.45 posi disc 9 bolt
Originally Posted by RandyZ
yea ditch the spacer it will give you the hood clearance you need when using a carb on these cars a low intake is the best i have a tourker 2 intake with 3inch air filter workers great
well im going to have to run the spacer it is for the nitrous, i have a very very small spacer on there right now but it is like 1/16th or something it is very small.

i put poly motor mounts in so that might be part of the problem but it is sticking up awefully awefully high. i have a holley street dominator intake manifold, and the carb is a 650 double pumper the choke tower is milled off. i know there are people on here running this intake can some of yall help me out?

mw66nova has this same intake and carb and he fit it under his stock hood but he couldnt tell me what size base air cleaner he had...? im lost i would like to hear some opinions on what to do whether it is switch to another intake or different motor mounts but i need to do something to lower it down some with out loosing any performance.

the 1 inch is really my only option so you guys laugh ya but i have no other choice, im planning on getting one of those breather lids though so that should help alot only things is its going to be so close to the hood idk how much it will help.
Reply
Old Dec 6, 2006 | 11:38 AM
  #7  
spartyon's Avatar
Supreme Member
 
Joined: Sep 2001
Posts: 2,308
Likes: 2
From: winthrop harbor, il & plymouth, il
Car: 1986 camaro
Engine: 383 sbc
Transmission: th-400
Axle/Gears: 4th Gen 10 bolt/Detroit TrueTrac 4.
Right now your only option, as I see it, is to buy a cowl hood. Plain and simple. If you are using nitrous, that 1" (even with a breathable top) is NOT going to give the motor what it needs. That is like sticking a popsicle in your mouth, plugging your nose and trying to breathe. Not going to happen.
Reply
Old Dec 6, 2006 | 12:36 PM
  #8  
tilstad's Avatar
Senior Member
 
Joined: May 2003
Posts: 800
Likes: 0
From: New Jersey
Car: 87 Black Formula
Engine: Rollercammed Lg4
Transmission: 700R4
Axle/Gears: 3.23 10 Bolt Locker
How about a filter like this? It would give you the room you need, no?

Reply
Old Dec 6, 2006 | 02:11 PM
  #9  
xpndbl3's Avatar
Supreme Member
iTrader: (5)
 
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
i don't think a nitrous plates and a rpm type intake and the carb on top with air cleaner would all fit, it "might" with the L88 corvette filter possibly, but that's about it. Removing the inner structure off the hood will net you another 3/16" of clearance where the air cleaner should go.
Reply
Old Dec 6, 2006 | 07:43 PM
  #10  
rjt76's Avatar
Member
 
Joined: Sep 2005
Posts: 483
Likes: 0
From: maine
Car: 1986 iroc z
Engine: vortec 383
Transmission: th350
Axle/Gears: 3.73 moser 12 bolt true trac
I have poly motor mounts from spohn. I dont thinks thats your issue.
Reply
Old Dec 6, 2006 | 07:53 PM
  #11  
maroon88iroc's Avatar
Thread Starter
Supreme Member
iTrader: (7)
 
Joined: Mar 2005
Posts: 1,926
Likes: 3
From: mid GA
Car: 88 IROC
Engine: 305 TPI w/ l98 cam
Transmission: T5 5-speed
Axle/Gears: 3.45 posi disc 9 bolt
Originally Posted by tilstad
How about a filter like this? It would give you the room you need, no?


i have looked into that but i would rather find something else i mean i could get a better lower profile intake for less than that air cleaner but it would look very sweet on my car, i just dont know if it would help as much as i need it to help and thats a big price if it isnt enough you know?

we have a 71 corvette and i threw that base on my car and it did pretty well i could run the three inch and it was close on the hood, but idk if i could run the spacer and that base/cleaner. ill measure the base here in a min. and post up how big the drop base is.

does anyone know of an affordable shorter intake that still makes pretter good power? ill have to look around summit later on tonight i havent had much time. lately.

i appreciate your comments and suggestions guys i need to get this figured out and i figure someone with real world experience will help me a ton.
Reply
Old Dec 7, 2006 | 09:44 AM
  #12  
maroon88iroc's Avatar
Thread Starter
Supreme Member
iTrader: (7)
 
Joined: Mar 2005
Posts: 1,926
Likes: 3
From: mid GA
Car: 88 IROC
Engine: 305 TPI w/ l98 cam
Transmission: T5 5-speed
Axle/Gears: 3.45 posi disc 9 bolt
well i looked on summits site for a little while. it looks like weiand has a stealth intake and a single plane intake that are both low profile, holley has the same intake as what i have right now in a low rise version so i will have to check those out.

anyone here have a rpm-air gap? can someone measure the height of it? this is the intake i wanted to get at first but decided to go with this one instead b/c of the price.

any more suggestions/comments to help me out? the rest of my nitrous parts come in this week and i would like to wire it all in by christmas, but i need to figure this problem out first.
Reply
Old Dec 7, 2006 | 07:13 PM
  #13  
SPIKE's Avatar
Member
iTrader: (1)
 
Joined: Dec 2004
Posts: 239
Likes: 0
From: FLORIDA
Car: 86 CAMARO
Engine: 92-350 +.030
Transmission: 86-th400
Axle/Gears: 3.73
i have rpm air gap, 1" spacer, holly 750 and 3" drop base filter. "had to cut hood". sorry. looks like it would of just fit without 1" spacer and under hood brace cut out.
Reply
Old Dec 7, 2006 | 07:49 PM
  #14  
Air_Adam's Avatar
TGO Supporter
 
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
There are basically two drop base 14" air cleaners out there... actually 2 bases. All the mfg's use the same stuff, and stamp their own logo in the lids basically.

Theres one thats a 5/8" drop, which it appears you have, and one that has a 1-1/4" drop, which is what you need. Only the bases are different. You can tell them apart by the 'throat' of the base (where it mates to the carb body)... the 1-1/4" drop base will have a shorter 'throat' and the 5/8" drop will have a taller one.
Reply
Old Dec 7, 2006 | 10:17 PM
  #15  
maroon88iroc's Avatar
Thread Starter
Supreme Member
iTrader: (7)
 
Joined: Mar 2005
Posts: 1,926
Likes: 3
From: mid GA
Car: 88 IROC
Engine: 305 TPI w/ l98 cam
Transmission: T5 5-speed
Axle/Gears: 3.45 posi disc 9 bolt
Originally Posted by Air_Adam
There are basically two drop base 14" air cleaners out there... actually 2 bases. All the mfg's use the same stuff, and stamp their own logo in the lids basically.

Theres one thats a 5/8" drop, which it appears you have, and one that has a 1-1/4" drop, which is what you need. Only the bases are different. You can tell them apart by the 'throat' of the base (where it mates to the carb body)... the 1-1/4" drop base will have a shorter 'throat' and the 5/8" drop will have a taller one.
will the 1-1/4" base work?
Reply
Old Dec 7, 2006 | 10:28 PM
  #16  
xpndbl3's Avatar
Supreme Member
iTrader: (5)
 
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
did u even cut out the bracing under the hood where the air cleaner sits to see if that helps? you can also shim the back of the hood up a little bit and not have it be noticeable to get more clearance if/as needed.
Reply
Old Dec 7, 2006 | 10:49 PM
  #17  
maroon88iroc's Avatar
Thread Starter
Supreme Member
iTrader: (7)
 
Joined: Mar 2005
Posts: 1,926
Likes: 3
From: mid GA
Car: 88 IROC
Engine: 305 TPI w/ l98 cam
Transmission: T5 5-speed
Axle/Gears: 3.45 posi disc 9 bolt
Originally Posted by xpndbl3
did u even cut out the bracing under the hood where the air cleaner sits to see if that helps? you can also shim the back of the hood up a little bit and not have it be noticeable to get more clearance if/as needed.
i have an iroc hood.. i dont think there is any bracing in the middle b/c of the louvers. and i dont want to shim it, it lines up pretty good right now. i think i will try the 1 and 1/4 inch drop base and see how that does.
Reply
Old Dec 7, 2006 | 11:10 PM
  #18  
xpndbl3's Avatar
Supreme Member
iTrader: (5)
 
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
go pop your hood and look at the bracing there, cuz it's there, I cut out my iroc hood before. like i said it's worth 3/16" if you read my posts above. Otherwise try the other air cleaner and if it's close then use my ideas.
Reply
Old Dec 8, 2006 | 01:56 AM
  #19  
Tobias05's Avatar
Supreme Member
20 Year Member
 
Joined: Jul 2003
Posts: 2,779
Likes: 2
From: any clime or place...
Car: 1987 Camaro SC, 1999 Z28
Engine: GMPP 350HO, LS1
Transmission: Built 700r4/EDGE 3200, T56
Axle/Gears: 3.42 Eaton 7.625, 3.42 Zexel Torsen
mmm...I have an RPM intake, holley 650 double pumper, 1/2 spacer, and a holley open element assembly with a 3" K&N, and its a very tight fit. if i snug the wing nut down really tight, the hood closes perfectly.

i had to waste 30 bucks on the holley assembly, because it had more "throat" to clear the float nuts, but i don't think it had more of a drop base than the edelbrock open element.
Reply
Old Dec 8, 2006 | 06:00 AM
  #20  
JamesC's Avatar
Moderator
25 Year Member
Liked
Loved
iTrader: (5)
 
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Originally Posted by tilstad
How about a filter like this? It would give you the room you need, no?

Wouldn't fit under the hood of my car--bought it and tried it.

JamesC
Reply
Old Dec 8, 2006 | 07:07 PM
  #21  
Air_Adam's Avatar
TGO Supporter
 
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Originally Posted by maroon88iroc
will the 1-1/4" base work?
I have a dual feed Holley, RPM Air Gap intake, and the 1-1/4" drop base. Its fits under the stock fibreglass Z28 hood... doesn't clear by much, but it does fit w/o and cutting of the hood. Looks like it would have a bit more clearance under your hood than mine, as I have the two molded-in 'scoops' that reduce clearance by 1/2" or so.
Reply
Old Dec 8, 2006 | 10:37 PM
  #22  
maroon88iroc's Avatar
Thread Starter
Supreme Member
iTrader: (7)
 
Joined: Mar 2005
Posts: 1,926
Likes: 3
From: mid GA
Car: 88 IROC
Engine: 305 TPI w/ l98 cam
Transmission: T5 5-speed
Axle/Gears: 3.45 posi disc 9 bolt
Originally Posted by Air_Adam
I have a dual feed Holley, RPM Air Gap intake, and the 1-1/4" drop base. Its fits under the stock fibreglass Z28 hood... doesn't clear by much, but it does fit w/o and cutting of the hood. Looks like it would have a bit more clearance under your hood than mine, as I have the two molded-in 'scoops' that reduce clearance by 1/2" or so.
thats good to hear. are you running a 3-inch filter also?
Reply
Old Dec 9, 2006 | 06:25 PM
  #23  
Air_Adam's Avatar
TGO Supporter
 
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Originally Posted by maroon88iroc
thats good to hear. are you running a 3-inch filter also?
I am running a 3" filter.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
z 28 jari
Exhaust
7
Sep 14, 2021 10:03 PM
91 SrS
Exhaust
5
Oct 7, 2015 04:32 PM
86z89iroc
Tech / General Engine
5
Oct 5, 2015 01:04 PM
Night rider327
Engine/Drivetrain/Suspension Parts for Sale
0
Sep 16, 2015 02:20 AM




All times are GMT -5. The time now is 04:31 PM.