Activity Stream: Show All | New Threads | New Posts | New Pictures | Popular Threads | Lonely Threads | Vendor Threads | New Picture Comments | New Profile Comments |
Search:  
Go Back   Camaro Forums - Chevy Camaro Enthusiast Forum > Third Generation (1982-1992) > 82-92 Drivetrain > 82-92 V8 Tech
Sign in using an external account
Register Forgot Password?

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 03-05-2013, 09:17 PM
WIspartan1026's Avatar
May 2013 ROTM
ROTM Winner's Club
1996 Chevrolet Camaro
My Garage
 
Join Date: May 2009
Location: Farmington Hills, MI
Posts: 1,562
iTrader: (0)
Default 305 intake/carb help

I'm not a 3rd gen guy, so I'm a little out of my element here. I'm inquiring for my brother, who has an '86 Z28 with the 305. The car just had the intake manifold gasket go out on it, so my brother wants to do some upgrading. He's not nearly as experienced/knowledgeable with cars as my dad and I are, and he's more of a shoot first then ask questions person. I want to give him solid advice, but I don't know carbureted stuff, or 3rd gens for that matter.

He wants to get a upgraded carburetor (he's thinking Edelbrock) and a new intake manifold to go with it. This car is his daily driver, so it's 100% street driven. He just wants boost in power/performance while maintaining driveability. He also wants a setup he won't have to mess with--tune it once and don't worry about it for a long time.

Any thoughts/suggestions on which carbs/intakes he should look for is appreciated.
__________________

1996 Z28 Cam, heads, stall, and a few other goodies. Coming...eventually
4th Gen Parts for sale!!!
Quote:
Originally Posted by 1990CamaroRS View Post
OMG IT'S AN S197 SIZED SIG!!!!
Reply With Quote
  #2  
Old 03-05-2013, 09:20 PM
WIspartan1026's Avatar
May 2013 ROTM
ROTM Winner's Club
1996 Chevrolet Camaro
My Garage
 
Join Date: May 2009
Location: Farmington Hills, MI
Posts: 1,562
iTrader: (0)
Default

And before anybody says it, my brother isn't getting a 350 lol
__________________

1996 Z28 Cam, heads, stall, and a few other goodies. Coming...eventually
4th Gen Parts for sale!!!
Quote:
Originally Posted by 1990CamaroRS View Post
OMG IT'S AN S197 SIZED SIG!!!!
Reply With Quote
  #3  
Old 03-05-2013, 09:38 PM
slick's camaro's Avatar
3rd Gear Member
2000 Ford Mustang
My Garage
 
Join Date: Sep 2010
Location: Charleston, South Carolina
Posts: 861
iTrader: (0)
shaun lampkin slickoneshot
Default

Edelbrock is the easiest to tune, a electric choke would be nice too....keep the stock manifold. Upgrading it on a stock 305 won't be worth the results..well you won't get a boost in performance sorta speak.
__________________

COMMING SOON
Reply With Quote
  #4  
Old 03-06-2013, 07:12 AM
Fourth Generation Moderator
October 2009 ROTM
ROTM Winner's Club
1996 Chevrolet Camaro
My Garage
 
Join Date: Nov 2007
Location: Eastern PA,
Posts: 6,644
iTrader: (1)
Default

First question would be is the emissions system in tack and does it need to stay that way? If so don’t mess with it as your brothers car has a computer controlled carburetor and distributer.
__________________
67 RS/SS Rag Top 4 speed / 96 3800 5 speed/ 93 LT1 6 speed

93 Camaro Build Thread
96 Camaro Build Thread
Reply With Quote
  #5  
Old 03-06-2013, 07:27 AM
WIspartan1026's Avatar
May 2013 ROTM
ROTM Winner's Club
1996 Chevrolet Camaro
My Garage
 
Join Date: May 2009
Location: Farmington Hills, MI
Posts: 1,562
iTrader: (0)
Default

Quote:
Originally Posted by Gorn View Post
First question would be is the emissions system in tack and does it need to stay that way? If so donít mess with it as your brothers car has a computer controlled carburetor and distributer.
Emissions system is in tact, the car is completely bone stock. Not sure about if it needs to "stay that way." He lives in Florida (stationed there for the Air Force), but it's registered in Wisconsin, and I know Wisconsin doesn't have any emissions inspections. He keeps saying that he wants to delete the emissions stuff, but I'm quite confident he doesn't have a clue about what that will all entail.
__________________

1996 Z28 Cam, heads, stall, and a few other goodies. Coming...eventually
4th Gen Parts for sale!!!
Quote:
Originally Posted by 1990CamaroRS View Post
OMG IT'S AN S197 SIZED SIG!!!!
Reply With Quote
  #6  
Old 03-06-2013, 08:54 AM
Fourth Generation Moderator
October 2009 ROTM
ROTM Winner's Club
1996 Chevrolet Camaro
My Garage
 
Join Date: Nov 2007
Location: Eastern PA,
Posts: 6,644
iTrader: (1)
Default

Well to change the carb he has to disable the ECU- replace the distributer and Carb. He can get a little more out of the mid range RPMs the torque style intake. This would have little or no effect on Max HP like everyone likes to brag about but it would make the car slightly faster in the ľ mile and it will show up on a butt dyno.

Setting up a Carb and distributer on an engine is easy getting them right all through the RPMs takes a lot of years to learn how to do. Even then for the car to just match the performance of computer controlled you are going to have to run premium gas and still will not hit your current mileage. The knock sensor allows the factory to run more timing advance because the system can hear the spark knock and reduce timing as needed.

Of course this all assumes the computer is intact and working right. The reality is, if you not upgrading the Cam and heads removing the computer is going to hurt the cars performance and MPG and will cost a lot if you do it right.
__________________
67 RS/SS Rag Top 4 speed / 96 3800 5 speed/ 93 LT1 6 speed

93 Camaro Build Thread
96 Camaro Build Thread
Reply With Quote
  #7  
Old 03-08-2013, 07:50 AM
WIspartan1026's Avatar
May 2013 ROTM
ROTM Winner's Club
1996 Chevrolet Camaro
My Garage
 
Join Date: May 2009
Location: Farmington Hills, MI
Posts: 1,562
iTrader: (0)
Default

Did/Does Edelbrock or Holley make a Quadra-Jet carburetor that's a direct replacement for the OEM Quadra-Jet?
__________________

1996 Z28 Cam, heads, stall, and a few other goodies. Coming...eventually
4th Gen Parts for sale!!!
Quote:
Originally Posted by 1990CamaroRS View Post
OMG IT'S AN S197 SIZED SIG!!!!
Reply With Quote
  #8  
Old 03-08-2013, 08:34 AM
Camaro 69's Avatar
Senior Moderator
January 2010 ROTM Winner
No cars in Camaro 69's garage, add now
 
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 16,334
iTrader: (0)
Default

The answer is yes, Holley makes a spreadbore carb that replaces the quadrajet. And to Gorn's point about having to replace the carb, distributor, and computer....no, you don't. You can replace only the carb, and leave the computer controlled distributor alone. All that will happen is the computer won't be metering the carb any more, but the rest will work the same. Also, what transmission does he have, an automatic with a locking torque converter perhaps? That's another reason why he doesn't want to remove the computer. But, if your brother plans on still keeping the car somewhat stock, I don't see the point, and probably no gain, in replacing his Quadrajet with a non computer controlled one. He needs to figure exactly what he wants to end up with, and work backwards from there. By "delete the emissions stuff", does he want to rip out everything and make it old school? Once you start talking about a cam, headers, and an aftermarket intake, then performance wise he's going to want a different carb. And although not a necessity, an aftermarket distributor allows one to tune the engine the way they want it. Then there's the question of what are his mechanical skills? Can he tune a carb and a distributor without opening a big can of worms and make things worse than he has it now? His car was designed to have a balance of (cough) performance and gas mileage. It's not set up for ultimate performance, because with that can come a cost of lower gas mileage.
__________________


393 Stroker, Tunnel Ram, Dual Holley's
"I only live for today, but I'm one day behind"

Eats Rice and Poops Out Fords.
Reply With Quote
  #9  
Old 03-08-2013, 09:45 AM
Fourth Generation Moderator
October 2009 ROTM
ROTM Winner's Club
1996 Chevrolet Camaro
My Garage
 
Join Date: Nov 2007
Location: Eastern PA,
Posts: 6,644
iTrader: (1)
Default

When you say still works you mean the car will run but it will not work as intended. The spark mapping assumes the carb is adjusting to the same sensor inputs it is seeing and adjusting the fuel mixture. Effectively the car is tuned to a carb that can react. Obviously once you remove the computer control carb the O2 sensor become useless. Once the computer cannot control the fuel ratio you are going to get a Lean/rich code check engine lite. That will hurt the motor function way more than putting a different carb to possible help. The truth is the stock 305 4 barrel is over carbureted to start with. I would bet I could switch that over to a 2 barrel and you would see very little change below 4500 RPMs. If you remove any other sensor the computer the ECU will lock in LHM and not adjust the timing base on any sensor input and just follow a predefine map.

When you look at what the “chips” or aftermarket Proms on the CCC systems use to do to gain more power, they played with the spark mapping and spark knock sensitivity. They required 92 octane to run right.
__________________
67 RS/SS Rag Top 4 speed / 96 3800 5 speed/ 93 LT1 6 speed

93 Camaro Build Thread
96 Camaro Build Thread
Reply With Quote
  #10  
Old 03-08-2013, 01:33 PM
Camaro 69's Avatar
Senior Moderator
January 2010 ROTM Winner
No cars in Camaro 69's garage, add now
 
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 16,334
iTrader: (0)
Default

Just leave the old carb plugged in and hang it on the firewall, and the computer won't be any the wiser.
Seriously though, unless I'm mistaken, I thought there was a way to fool the computer into thinking it's still talking to a cc carb?
__________________


393 Stroker, Tunnel Ram, Dual Holley's
"I only live for today, but I'm one day behind"

Eats Rice and Poops Out Fords.
Reply With Quote
Old 03-08-2013, 01:33 PM
Activity Stream
Activity Stream: Show All | New Threads | New Posts | New Pictures | Popular Threads | Lonely Threads | Vendor Threads | New Picture Comments | New Profile Comments |
Search:  
 
 
 
Reply

Tags
86, 93, camaro, carb, carburated, carburator, carburetor, change, chevy, close, computer, controlled, intake, loop, open, remove, small

Thread Tools Search this Thread
Search this Thread:

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 On
Pingbacks are On
Refbacks are On


Advertising

Featured Sponsors
Vendor Directory
Our Sponsors


All times are GMT -5. The time now is 06:52 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.
Emails Backup