Holley Carburetor
Thread Starter
3rd Gear
Joined: Nov 2009
Posts: 3
Likes: 0
Holley Carburetor
Hello All,
I'm thinking about adding a 4 barrel Holley Carburetor to my '81 Vette. Can anyone recommend a good model that adds preformance and that is the BEST bet for this car?
Thank You
I'm thinking about adding a 4 barrel Holley Carburetor to my '81 Vette. Can anyone recommend a good model that adds preformance and that is the BEST bet for this car?
Thank You
Melting Slicks
Joined: Mar 2006
Posts: 3,456
Likes: 102
From: Piedmont Va
St. Jude Donor '11-'12-'13,'19-'20
I beleive 81 came with ECM and ECM carb? If yes this change becomes more problematic.
If all the ECM stuff is gone, and you want to keep your stock intake, models 4165 and 4175 are direct replacements for Qjet. 4175 (Vac Secs) is better if you have auto trans.
If you want to go straight bore you will need a intake upgrade or adapter plate (which I would not recommend), and then you may have hood clearance issues. I'm sure more folks will chime in.
If all the ECM stuff is gone, and you want to keep your stock intake, models 4165 and 4175 are direct replacements for Qjet. 4175 (Vac Secs) is better if you have auto trans.
If you want to go straight bore you will need a intake upgrade or adapter plate (which I would not recommend), and then you may have hood clearance issues. I'm sure more folks will chime in.
Race Director
Joined: Oct 2000
Posts: 15,048
Likes: 79
From: central FL, near the beach.
together with heads, cam, true duals and headers it will totally transform the car! http://community-2.webtv.net/MATTGRU/carb/page2.html
Racer
Joined: Feb 2008
Posts: 497
Likes: 0
From: Streator Illinois
A 750 cfm might be a bit too large. I have a Holley Street Avenger 670 cfm on the ZZ4 in my '75 and it starts easily, provides excellent acceleration, and pulls strong through all 4 gears with a 3:36 rearend.
Terry
Terry
Racer
Joined: Mar 2008
Posts: 428
Likes: 0
Do you know if the Avenger will fit under a stock 80 hood?
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Joined: Feb 2008
Posts: 497
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From: Streator Illinois
Drifting
Joined: Apr 2006
Posts: 1,911
Likes: 2
From: gold coast queensland
first thing dminished has to answer is if he has the CCC just like dosoctaves asked?
7T1,s question is good..why change it and that goes back to giving us some more information?there is alot more information required to answer correctly like engine size?gears?transmission?future plans?....but here is my opinion on
- If CCC still there and working and you still want a new carb then get ready to shell out some cash on dizz,carb, loc up converter switch.
- if CCC and its matching components are all gone on a stock 81 engine then get a 650 road demon and live happy ever after.
7T1,s question is good..why change it and that goes back to giving us some more information?there is alot more information required to answer correctly like engine size?gears?transmission?future plans?....but here is my opinion on
- If CCC still there and working and you still want a new carb then get ready to shell out some cash on dizz,carb, loc up converter switch.
- if CCC and its matching components are all gone on a stock 81 engine then get a 650 road demon and live happy ever after.
Last edited by gingerbreadman1977; Nov 21, 2009 at 09:20 PM.
