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05-21-2009, 04:24 PM
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#1
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Join Date: Feb 2008
Location: Brick
Posts: 415
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What carb was used on 87 z28 305. I know its a 4bble rochester but dont know CFM, and anyone know what a good replacement would be?
I get it, its a 305 dont waste my money on it blah blah blah. 
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1989 Camaro RS 305 700r4
1987 Camaro Z28 305 T5
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05-24-2009, 03:36 PM
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#2
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,165
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if you are keeping all the computer stuff then have yours rebuilt.
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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05-24-2009, 03:37 PM
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#3
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Power Member
Join Date: Oct 2007
Location: Milford NJ
Posts: 1,526
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the stock quadrajet is a good carb, and will support a respectable ammout of power, i would keep it. Maybe freshen it up a bit with a rebuild.
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05-24-2009, 10:00 PM
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#4
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,476
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The stock carb was a computer controlled Q-Jet. They were capable of flowing up to ~750 cfm, however I have read that on a stock setup you wouldn't see those numbers because the secondaries don't open 100%.
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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05-26-2009, 03:33 PM
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#5
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Join Date: Feb 2008
Location: Brick
Posts: 415
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Quote:
Originally Posted by BonzoHansen
if you are keeping all the computer stuff then have yours rebuilt.
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Would love to get rid of the computer garbage but probably too involved to do right now.
__________________
1989 Camaro RS 305 700r4
1987 Camaro Z28 305 T5
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05-26-2009, 06:15 PM
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#6
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,476
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Quote:
Originally Posted by String
Would love to get rid of the computer garbage but probably too involved to do right now.
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If you ditch the computer you have to get a non CC carb, a non CC distributor, and you have to address the lockup for the converter if it's an automatic.
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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05-26-2009, 09:06 PM
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#7
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,165
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And EGR control? IIRC the EGR solenoid is CCC controlled, although I could be mistaken.
With a 305 there is little benefit to you changing carbs. Spend the $$ somewhere more useful like gears or SFCs. At least IMO. If it is true that the secondaries don't open 100% then a good rebuilder can fix that.
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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05-27-2009, 08:07 AM
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#8
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Join Date: Feb 2008
Location: Brick
Posts: 415
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Its a 5speed. so dont have to worry about lockup. SFCs?
__________________
1989 Camaro RS 305 700r4
1987 Camaro Z28 305 T5
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05-27-2009, 08:08 AM
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#9
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,165
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Sub frame connectors.
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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05-27-2009, 09:23 AM
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#10
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Join Date: Feb 2008
Location: Brick
Posts: 415
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Ooo. thats on my list too. i have a pretty big list haha! 
__________________
1989 Camaro RS 305 700r4
1987 Camaro Z28 305 T5
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05-27-2009, 09:36 AM
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#11
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Join Date: Mar 2007
Location: NJ
Posts: 540
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I replaced the carb on my car a few years ago. Ordered a reman from www.guaranteedcarbs.com, after shipping it cost me $236. Dropped it on and haven't had to touch it since. Didn't even need any adjustments after I installed it.
I didn't look into having mine rebuilt, from what I've heard there a PITA unless you find someone that really knows how to work on them.
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05-27-2009, 05:16 PM
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#12
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Join Date: Feb 2008
Location: Brick
Posts: 415
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Thanks for the info i'm going to check that link out now.
__________________
1989 Camaro RS 305 700r4
1987 Camaro Z28 305 T5
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06-02-2009, 05:56 PM
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#13
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Guest
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I got rid of the computer stuff all at once on my 84 5 speed. Edelbrock performer with egr blocked, a holley 600 cfm that i had and a vac advance distributor that i rebuilt with a pepboys rebuild kit. Ran great till headgaskets went  If you DD the car i would suggest a brand new carb and distributor, I had a demon Jr 500 cfm on my work van 305 and that ran great too. Plenty of power and will run decent.
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