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03-24-2007, 07:51 AM | #1 |
Junior Member
Join Date: Jul 2005
Location: Wisconsin
Posts: 151
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What carb to go with ?
Changed oil, fuel filter, plugs, wires, cap/rotor (HEI) on the '71 C 30 cab/chassis camper I bought last fall, Idles and sounds great for a minute or two and then it seems like it starts to load up and i have to rev it up to clear it up and then it starts all over again. It is a 350 w/a quadrajet, needs replacing anyway, support broke off on one side of plunger activating arm so it,will not stay centered on the top of the plunger? unless I use a small vise grip to hold it in place. Also found out either the engine isn't original, imagine that, or they put older heads on it, sounds good when idleing, have only driven it , 2 miles , home, when I bought it, very slowly. Which carb and what size should I be looking for. Thanks
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'71 C10, Choptop/Lowered '70 C30, w/24' Franklin Motor '91 9c1 Caprice '90 Harley FL, 127 Ultima engine w/6 speed, Blk & chrome |
03-24-2007, 11:29 AM | #2 |
Registered User
Join Date: Dec 2006
Location: Rhode Island
Posts: 602
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Re: What carb to go with ?
Could be as simple as timing, idle screw jetting/adjustment, a "seepy" fuel bowl needle/seat or a vacuum leak or any combination of the above. But then, it could be completely worn out and in need of a rebuild. I've found Q-jets can be a bear to get right after rebuilding. In my opinion, they're generally expensive to replace/buy as rebuilt. If you're willing to spend decent money on a carb, the Edelbrock 600 would be my recommendation if your engine's nearly stock.
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03-24-2007, 12:05 PM | #3 |
Thats the Hillbilly way
Join Date: Jul 2001
Location: Torrance,Ca
Posts: 5,979
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Re: What carb to go with ?
if you are sure it's the carb the Edelbrock 1406 should work fine ,if you have done any modifications I would suggest also getting the rod& jet kit off e-bay .
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BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen , |
03-24-2007, 01:14 PM | #4 |
Junior Member
Join Date: Jul 2005
Location: Wisconsin
Posts: 151
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Re: What carb to go with ?
I have done nothing to it, all I know it is not a '71 engine, older larger spark plugs, could be original engine, older heads, has HEI ignition.
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'71 C10, Choptop/Lowered '70 C30, w/24' Franklin Motor '91 9c1 Caprice '90 Harley FL, 127 Ultima engine w/6 speed, Blk & chrome |
03-24-2007, 01:20 PM | #5 |
Green club
Join Date: May 2002
Location: Central CA
Posts: 1,059
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Re: What carb to go with ?
Q-jets can be hard to get figured out sometimes. I personally would do a general rebuild on the thing (if you know how, don't know your skill level) and get it to work.
Quadrajets are one of the best carbs out there, I have one on my truck myself.
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71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears 70 SS396 Chevelle 427/200-4R/3.73posi 61 Lincoln Continental, black on black Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln |
03-24-2007, 02:27 PM | #6 |
Thats the Hillbilly way
Join Date: Jul 2001
Location: Torrance,Ca
Posts: 5,979
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Re: What carb to go with ?
I think the 1406 would work fine , it also has an electic choke .
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BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen , |
03-24-2007, 01:40 PM | #7 |
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Join Date: Jan 2007
Location: Topeka,KS
Posts: 778
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Re: What carb to go with ?
There's a guy on E-Bay selling Holley Economasters. They're spreadbore so they will bolt up to stock. I've heard some good things about them, and he really talked them up, couarse I'm a salesman at heart so I'm easy. I haven't got mine on yet, actually haven't got yet. Rebuilt my Q and don't have any vacuum at the ports. But it runs better.
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03-24-2007, 03:14 PM | #8 |
GEARHEAD
Join Date: Jan 2007
Location: CENTRAL,PA
Posts: 2,284
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Re: What carb to go with ?
You will get as many opinion on this as there are carbs available. Personal preferance prevails in this matter.
So here's mine I love Q-jets and rebuilt Q-jets can be had from Advance Auto for under $150. i will get the #'s but there were some listed here in the recent past. Someone my have the numbers more readily avalible. Just my .02 RJ22 |
03-24-2007, 03:23 PM | #9 |
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Join Date: Apr 2005
Location: Bendigo, Victoria, Australia
Posts: 35
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Re: What carb to go with ?
Q-jet's a very versatile carb, and when properly set up it can't be beat! Find you an older GM mechanic to rebuild it for you. Someone who has had lots of experience. I would have loved to gone with the Qjet on my truck, but I also wanted to run the Air Gap RPM. I hate adapters, so I went with a square bore Holley. Here's my opinion about Holley - SUCKS! But they're cheap and easy to find. A friend pointed out that I've got a $25000 truck with a $200 carb on it, I should get an FI conversion. Makes perfect seance. Who's got $1500 that I can have????
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Darrell 67 short stepside Complete frame-up |
03-24-2007, 03:48 PM | #10 | |
GEARHEAD
Join Date: Jan 2007
Location: CENTRAL,PA
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Re: What carb to go with ?
Here's the #'s for the rebuilt Q-Jet if ya want em' supplied by rage'nrat638 Thank You rage'nrat BTW for them as I'm sure any others here that use them will feel the same.
Quote:
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03-25-2007, 02:06 AM | #11 |
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Join Date: Jul 2003
Location: Cypress, Tx
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Re: What carb to go with ?
Just went and got mine today from autozone! 118.00 minus my 10% firefighter discount. 106.20 plus tax.. woohoo!!!
Shawn
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1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE |
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