Carb suggestions

66starfire · 12-09-2006, 08:50 PM

Ok i just got a 66 starfire with a 70 455 BB in it.
the carb is a holley 4010 made in 78.
it has the race setup with choke tower and such deleted.
its 750cfm and it FLOODS the motor badly.

just wondering if since my motor is stock, what a correct size carb would be, especially if im going to do heads/headers/exhaust in the nearish future?
holley website says 600-750, should I go with a 750 then? or say a 670?

luv2race · 12-25-2006, 06:13 PM

Quote:

Originally Posted by 66starfire

Ok i just got a 66 starfire with a 70 455 BB in it.
the carb is a holley 4010 made in 78.
it has the race setup with choke tower and such deleted.
its 750cfm and it FLOODS the motor badly.

just wondering if since my motor is stock, what a correct size carb would be, especially if im going to do heads/headers/exhaust in the nearish future?
holley website says 600-750, should I go with a 750 then? or say a 670?

I have a quadrajet carburetor that would bolt onto the stock intake and utilize the choke spring for your year and application. It is off from a 1966 olds98 that I bought with only 15,218 original miles on the engine. It needs to be taken apart, and have new gaskets installed and accelerator pump. It is not frozen up, just a little sticky from sitting, would'nt take much to make this a heck of a carburetor for a vintage vehicle. carb number is 7026250, any questions let me know, thanks , Jamie

texasred · 12-25-2006, 08:09 PM

QJet.

My best bud here runs 11s on a 70 442 with untouched iron heads and a QJet...all motor!

C.J.

Oldsguy · 12-26-2006, 05:08 AM

I agree with these guys, the carb on your engine does not seem to fit it in my opinion. Some people think you can put a monster carb or modify a street carb by removing the choke, jetting it up, and hogging it out and then do nothing else to the engine. That usually won't work well, especially for streetability. A QJet is a very good carb, GM used it on millions of cars succesfully.

66starfire · 12-26-2006, 04:16 PM

See but I dont have the original intake manifold anymore so it would be sorta hard. I got a torker 2 intake with the squarebore. I THINK I might have a spreadbore adapter in my trunk that the guy gave me. Have to look again. I also dont think I have the choke spring, and since Im not at home its hard to find out right away, it should be on the passenger side of the intake manifold correct? Wound up in a circle? or ball, whichever you choose. Do you know if it came off a 455? And PM me or email me at madhatter3601@hotmail.com with a price. Choke is a very usefull tool out in wyoming.. and thats what I would be interested in.
Thanks guys, ,

-66starfire

texasred · 12-26-2006, 08:02 PM

Get an electric choke from a newer QJet. Works like a champ. Trust me.

Are you sure it is a Torker II? I thought Ebrock had the Torker 455 for Olds...and a pre-79 QJet will fit those just fine.

C.J.

Oldsguy · 12-27-2006, 05:58 AM

I have seen both squarebore and spreadbore Torkers, don't know what they call them though. Electric choke!!!!!!! but yes to your question about where the choke should be and what it looks like, it should be in a little sheet metal box (old style) or coiled in a round housing that mounts on the side of the carb (newer style). Yours is should be the latter.

texasred · 12-27-2006, 08:07 AM

Quote:

Originally Posted by Oldsguy

Electric choke!!!!!!!

You got a problem with that?

Just kidding...my Performer RPM intake didn't have the "hot air tube" provisions and someone suggested that fix. Works good!

C.J.

Oldsguy · 12-27-2006, 09:10 AM

In the old days we would kindle a fire on the manifold to warm up the engine...............

Really, I was meaning that electric choke is the cat's meow.

12-09-2006, 08:50 PM	#1 (permalink)
66starfire Member Join Date: Dec 2006 Posts: 61	Carb suggestions Ok i just got a 66 starfire with a 70 455 BB in it. the carb is a holley 4010 made in 78. it has the race setup with choke tower and such deleted. its 750cfm and it FLOODS the motor badly. just wondering if since my motor is stock, what a correct size carb would be, especially if im going to do heads/headers/exhaust in the nearish future? holley website says 600-750, should I go with a 750 then? or say a 670?

12-25-2006, 08:09 PM	#3 (permalink)
texasred Super Moderator Join Date: Apr 2004 Location: San Antonio, Texas Posts: 807	QJet. My best bud here runs 11s on a 70 442 with untouched iron heads and a QJet...all motor! C.J. __________________ Home of the 1971 Cutlass Supreme convertible Super Karate Monkey Death Car.

12-26-2006, 05:08 AM	#4 (permalink)
Oldsguy Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 3,167	I agree with these guys, the carb on your engine does not seem to fit it in my opinion. Some people think you can put a monster carb or modify a street carb by removing the choke, jetting it up, and hogging it out and then do nothing else to the engine. That usually won't work well, especially for streetability. A QJet is a very good carb, GM used it on millions of cars succesfully. __________________ Dan '77 Cutlass Supreme '46 2 door

12-26-2006, 08:02 PM	#6 (permalink)
texasred Super Moderator Join Date: Apr 2004 Location: San Antonio, Texas Posts: 807	Get an electric choke from a newer QJet. Works like a champ. Trust me. Are you sure it is a Torker II? I thought Ebrock had the Torker 455 for Olds...and a pre-79 QJet will fit those just fine. C.J. __________________ Home of the 1971 Cutlass Supreme convertible Super Karate Monkey Death Car.

12-27-2006, 05:58 AM	#7 (permalink)
Oldsguy Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 3,167	I have seen both squarebore and spreadbore Torkers, don't know what they call them though. Electric choke!!!!!!! but yes to your question about where the choke should be and what it looks like, it should be in a little sheet metal box (old style) or coiled in a round housing that mounts on the side of the carb (newer style). Yours is should be the latter. __________________ Dan '77 Cutlass Supreme '46 2 door

12-26-2006, 04:16 PM	#5 (permalink)
66starfire Member Join Date: Dec 2006 Posts: 61	See but I dont have the original intake manifold anymore so it would be sorta hard. I got a torker 2 intake with the squarebore. I THINK I might have a spreadbore adapter in my trunk that the guy gave me. Have to look again. I also dont think I have the choke spring, and since Im not at home its hard to find out right away, it should be on the passenger side of the intake manifold correct? Wound up in a circle? or ball, whichever you choose. Do you know if it came off a 455? And PM me or email me at madhatter3601@hotmail.com with a price. Choke is a very usefull tool out in wyoming.. and thats what I would be interested in. Thanks guys, , -66starfire

12-27-2006, 09:10 AM	#9 (permalink)
Oldsguy Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 3,167	In the old days we would kindle a fire on the manifold to warm up the engine............... Really, I was meaning that electric choke is the cat's meow. __________________ Dan '77 Cutlass Supreme '46 2 door

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