Moparchat - Home of MOPAR enthusiasts worldwide!



Go Back   Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums > Performance Talk

Click here to search for Mopar cars and parts for sale.


Reply
 
Thread Tools Display Modes
  #1  
Old 04-22-2006, 11:49 PM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default Stock 340 carb????

Got a 1973 stock 340 and it needs a carb, just wondering what carb i should get cause the one on there is a 750 holly and it needs a rebuild. Seems like that carb is way to big for what i have anyways. Was thinking about a holly 650.

Comments welcome

Brian
Reply With Quote
  #2  
Old 04-22-2006, 11:54 PM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

The stock carb was a T-Q and can be had from Demonsizzler rebuilt and well tuned for your car.
http://www.thermoquads.com/

Otherwise, a Holley 650 is fine. The 670 Avenger is also an idea. If you like the Edelbrock carbs, I'd recomend the AVS unit. The tuneable air door is great.
I like OE Carter AVS' myself.
Reply With Quote
  #3  
Old 04-22-2006, 11:58 PM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default

im thinking about getting another holly, so ill check into the 650 cfm. What about a choke (electric or mechanical)?? what you think

Brian
Reply With Quote
  #4  
Old 04-23-2006, 12:03 AM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

I think a electric choke is stupid NOT to have on a everyday ride. Comes set for the most part. Just wire it up and forget it. Done.
Reply With Quote
  #5  
Old 04-23-2006, 12:08 AM
dwc43's Avatar
dwc43 dwc43 is offline
Banned
 
Join Date: Sep 2002
Location: Shelbyville,Tn.
Age: 54
Posts: 23,987
Biggrin

Quote:
Originally Posted by r/t brian
im thinking about getting another holly, so ill check into the 650 cfm. What about a choke (electric or mechanical)?? what you think

Brian
650 is too small. Keep in mind your 340 came stock with an 800 cfm Thermoquad. You'll have a much more responsive carb with the TQ, but if you must follow the flock at least get a 750.
Reply With Quote
  #6  
Old 04-23-2006, 12:51 AM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default

Quote:
Originally Posted by dwc43
650 is too small. Keep in mind your 340 came stock with an 800 cfm Thermoquad. You'll have a much more responsive carb with the TQ, but if you must follow the flock at least get a 750.

Well in all honesty the car with the 340 is getting sold so im just trying to figure which is best as far as the motor and the pocket book.

Did anyone ever check out the air/fuel ratio with the stock motor and an 800 cfm?? It seems like it would drown the hell outta the motor? Unless the carb had very small jets in it.

Brian
Reply With Quote
  #7  
Old 04-23-2006, 01:07 AM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

Brain;
The secret to the T-Q and it's huge cfm's were small primarys and of course proper jetting. The secondarys were huge. 2.25 each side. Thats alot. This carb is capable of good mileage and smoking W.O.T. performance.
You could tune a Holley 1150 Dom. to run on a 318. But in real life, it will have crummy street manors and throttle response.

The stock 340 was posted as a 275 HP engine. This would suggest in a drivers car, like everyday, commuting car, grocery getter, etc... 600 cfm would be enuff.
Reply With Quote
  #8  
Old 04-23-2006, 01:18 AM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default

Quote:
Originally Posted by rumblefish360
Brain;
The secret to the T-Q and it's huge cfm's were small primarys and of course proper jetting. The secondarys were huge. 2.25 each side. Thats alot. This carb is capable of good mileage and smoking W.O.T. performance.
You could tune a Holley 1150 Dom. to run on a 318. But in real life, it will have crummy street manors and throttle response.

The stock 340 was posted as a 275 HP engine. This would suggest in a drivers car, like everyday, commuting car, grocery getter, etc... 600 cfm would be enuff.
So rumblefish, If you had a 1972 dodge demon 4 speed with a 73 stock motor and it needed an intake, carb, coil what would you get? Also keep in mind its getting sold. I dont wanna half-ass anything or stick more into the car than needed. I dont know alot about the older cars, i just wanna do this right and the car should be on ebay within 2 weeks.

Brian
Reply With Quote
  #9  
Old 04-23-2006, 01:36 AM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

Where are you located. Just my kind of car. I got a Duster instead of waiting for one to pop up.

On the Cheap? OR new parts?

Theres so many ways to go on this.
I would get a OE intake and carb for the year car. Stock coil is fine. If not, a basic Accel will do just as well.
If you find the square bore stuff pricey, the get T-Q intake and carb.
Reply With Quote
  #10  
Old 04-23-2006, 01:39 AM
dwc43's Avatar
dwc43 dwc43 is offline
Banned
 
Join Date: Sep 2002
Location: Shelbyville,Tn.
Age: 54
Posts: 23,987
Biggrin

I'm close, I have a '76 Duster 360 4 spd and I'd put the same thing on both. A Weiand 8007 intake an a stock 800 Tq. IT's the best small block set up made and it all bolts on. I'd use a stock coil with the stock inginition. Without a complete upgrade your just wasting money.
Reply With Quote
  #11  
Old 04-23-2006, 01:44 AM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

Hey DW, whatcha get for a stock coil down there?
Also, what do you do for the choke on a T-Q when it's on top of a Action plus since theres no choke well. Cable?
Reply With Quote
  #12  
Old 04-23-2006, 01:54 AM
dwc43's Avatar
dwc43 dwc43 is offline
Banned
 
Join Date: Sep 2002
Location: Shelbyville,Tn.
Age: 54
Posts: 23,987
Biggrin

Coils run $25. About half the price of an Accell or MSD. I'd run an MSD though if I upgraded the rest of the ignition. Most of the time I don't run chokes, it stays so warm around here about 10 months out of the year, but I have run cables and electric chokes too. What ever you prefer to use is fine with me, I know women have problem with cables though ... LOL!!
Reply With Quote
  #13  
Old 04-23-2006, 01:58 AM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

Have you been able to run an electric choke on a T-Q on top of a Weiand intake?
I made a adapter, ugly ruff draft, but it worked useing a AFB choke bracketed on the side, bolted to a plate that slid under the carb.
Reply With Quote
  #14  
Old 04-23-2006, 02:01 AM
dwc43's Avatar
dwc43 dwc43 is offline
Banned
 
Join Date: Sep 2002
Location: Shelbyville,Tn.
Age: 54
Posts: 23,987
Biggrin

Yes, I have a TQ with a stock electric choke on it. I only have one though. I can't seem to find another one. Pretty shure I got it at Advance, but that's been some time ago.
Reply With Quote
  #15  
Old 04-23-2006, 02:02 AM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default

Im located in Wisconsin, alos when you say t-q is the thermal quad for short?

Plus where would a good place to get all this stuff??? Jegs?? Summit??

Brian
Reply With Quote
  #16  
Old 04-23-2006, 02:05 AM
dwc43's Avatar
dwc43 dwc43 is offline
Banned
 
Join Date: Sep 2002
Location: Shelbyville,Tn.
Age: 54
Posts: 23,987
Biggrin

TQ is short for THERMOQUAD. And yes Summit is about the cheapest place to buy engine parts from. The 8007 intake is about 184 and you can pick up a carb from Advance auto new for about the same price.
Reply With Quote
  #17  
Old 04-23-2006, 02:05 AM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

Yes T-Q is ThermoQuad. Stock stuff is found here in (Or other places) in the classifieds or swap meets and of course, Junk Yrads.
The aftermarket is very easy to find @ sumitt or jegs.
Once in a blue moon or less, E-bag will have a electric choke T-Q on it. Mostly a stock offering on a one year Ford engine. I think it was a 460.
Reply With Quote
  #18  
Old 04-23-2006, 02:14 AM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default

The reason i asked about the intake is because the setup currently on there is a holly 750, with an edlebrock intake and the carb (with the hard line attached for the fuel) is hitting the coil attached to the intake behind the carb. Is this the wrong setup?? or do i need a spacer so the fuel line doesnt hit the coil?? I bent up the fuel line and all i did was knik the line and it leaks now. So im looking for a setup ( intake, carb, coil..) Where everything is gonna bolt on and not have fitment issues.....


Brian
Reply With Quote
  #19  
Old 04-23-2006, 02:17 AM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

The fuel line should run toward the front of the engine and rubber to the pump. Replace the line.
What intake?
Reply With Quote
  #20  
Old 04-23-2006, 02:18 AM
dwc43's Avatar
dwc43 dwc43 is offline
Banned
 
Join Date: Sep 2002
Location: Shelbyville,Tn.
Age: 54
Posts: 23,987
Biggrin

It should not hit at all. The 8007 will bolt on just like stock and wont hit on the fuel line or anything. IT's one of the few intakes that was built for a Mopar instead of being a chebby copy. That's why the stock TQ bolts right on. And so does the coil. I noticed the newer intakes do not have the choke well for a stock choke, but I own some older ones that does have a choke well. With a lot of people using electric chokes I guess they dropped that.
Reply With Quote
  #21  
Old 04-23-2006, 02:23 AM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default

this is a manual choke carb, the front of the engine....meaning towards the firewall?? And yes theres rubber line to the pump. As far as the intake goes, how do i know whick one?? ill go out and look if someone tells me what to look for...

Brian
Reply With Quote
  #22  
Old 04-23-2006, 02:25 AM
dwc43's Avatar
dwc43 dwc43 is offline
Banned
 
Join Date: Sep 2002
Location: Shelbyville,Tn.
Age: 54
Posts: 23,987
Biggrin

Shoud be a name or number on it to tell what intake it is.
Reply With Quote
  #23  
Old 04-23-2006, 02:27 AM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default

Quote:
Originally Posted by dwc43
Shoud be a name or number on it to tell what intake it is.

All i know is that its an edlebrock intake....
Reply With Quote
  #24  
Old 04-23-2006, 02:27 AM
dwc43's Avatar
dwc43 dwc43 is offline
Banned
 
Join Date: Sep 2002
Location: Shelbyville,Tn.
Age: 54
Posts: 23,987
Biggrin

Here's a link for the intake. And it's cheaper than I thought. Only $175.



http://store.summitracing.com/partde...0&autoview=sku
Reply With Quote
  #25  
Old 04-23-2006, 02:32 AM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

The front of the engine is towards the water pump. The rear of the engine is towards the fire wall.
The fuel line should go to the front of the engine. Rubber line from there.

Yea, on the name, on the intake somewhere like the runners or the base/floor up front and/or the back.
Attached Images
File Type: jpg 100_0468.jpg (65.2 KB, 11 views)
Reply With Quote
  #26  
Old 04-23-2006, 02:32 AM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default

Hey thanks for all the help..........and the link!!
You to rumble...

A couple more things though When rumble said the hard line for the fuel on the carb should run to the front of the motor, does that mean towards the firewall or the front of the car? I know its a dumb Question but maybe the damn hard line is installed wrong. And Does a coil usually sit behing the carb on the intake with a braket around it???


Thanks you guys are a super big help for me!!!!

Brian
Reply With Quote
  #27  
Old 04-23-2006, 02:34 AM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

To the front of the car and yes to the other questions.
Reply With Quote
  #28  
Old 04-23-2006, 02:35 AM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default

Unbelieveable.....I know 4 sure the hard line is installed wrong, its going to the back of the car (firewall)....Ill wait til tommorrow to check on the intake, the neibors will wake up with a gun...lol

Thank you guys so so much!!!


brian
Reply With Quote
  #29  
Old 04-23-2006, 02:36 AM
r/t brian r/t brian is offline
Inactive User
 
Join Date: Mar 2006
Location: Oconto
Age: 46
Posts: 23
Default

hmmmm.... with that hard line installed wrong would that cause the carb to be spitting and sputtering??
Reply With Quote
  #30  
Old 04-23-2006, 02:37 AM
rumblefish360's Avatar
rumblefish360 rumblefish360 is offline
Moparchat Bronze member
 
Join Date: May 2000
Location: C
Age: 57
Posts: 11,120
Default

Being kinked/bent, yes, but theres more to this story I think.
Did it do that before?
Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Carb question for pure stock 500hpcuda Circle Track Chat 11 10-29-2009 10:55 PM
Need CFM of stock carb Brian Taylor Vintage MOPAR chat 3 07-12-2005 03:49 PM
Super Stock Carb Adaptor DYNO360 Circle Track Chat 1 05-31-2004 12:07 PM
Stock carb on a '68 440 PapaBato Performance Talk 12 01-07-2002 08:34 PM
stock 340 carb?? waynes72cuda Performance Talk 5 05-05-1999 04:12 AM




All times are GMT -4. The time now is 11:12 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
. . . . .