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Carb Question Old School or New #1187187 02/27/12 04:03 PM 02/27/12 04:03 PM
Joined: Feb 2006 Posts: 26 White Hall, Maryland M MD72 OP member
MD72 OP member M Joined: Feb 2006 Posts: 26 White Hall, Maryland	I have a 318 done .30 over with a mild cam and a stock 2 bbl. I want to put on an LD4B that I have. What carburetor should I use? 7092999-crop800.jpg (48 downloads)

Re: Carb Question Old School or New [Re: MD72] #1187188 02/27/12 04:14 PM 02/27/12 04:14 PM
Joined: Sep 2003 Posts: 1,465 Carson City, NV B babarracuda pro stock
babarracuda pro stock B Joined: Sep 2003 Posts: 1,465 Carson City, NV	Edelbrock thunder series 600. Once it set up it will work for ever. Remember not more that 5.5 pounds of fuel pressure. If it is hard to start after sitting at the gas station to fill up, you need the pressure regulator. Summit sells a couple of different ones( ie. Mr.Gasket). Holley 600 will perform slighly better, but you will be tinkering with it often.

Re: Carb Question Old School or New [Re: babarracuda] #1187189 02/27/12 05:45 PM 02/27/12 05:45 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	I am using a Holley 1850 600cfm on my 318. The only tinkering I have had to do involves jetting it for altitude and with the new blue gaskets it is a breeze. Either carb will work well once it is set up. Both carbs don't like too much fuel pressure. I am going to try out a 570 Street Avenger, I like it better because it has two metering blocks so you can change jets in primary and secondary bowls. The 1850 has a front block and rear plate, although there are kits to use jets in the back. R.

Re: Carb Question Old School or New [Re: dogdays] #1187190 02/27/12 06:00 PM 02/27/12 06:00 PM
Joined: Feb 2006 Posts: 26 White Hall, Maryland M MD72 OP member
MD72 OP member M Joined: Feb 2006 Posts: 26 White Hall, Maryland	Can I keep the stock fuel pump?

Re: Carb Question Old School or New [Re: MD72] #1187191 02/27/12 06:20 PM 02/27/12 06:20 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	will the ld340 ports line up with the 318 heads?

Re: Carb Question Old School or New [Re: MD72] #1187192 02/27/12 08:55 PM 02/27/12 08:55 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: Can I keep the stock fuel pump? My OE 318 fuel pump puts out over 7 psi EDIT that was checked w the psi side of a round hand held vacuum gauge and I do not know how dead on they are Last edited by RapidRobert; 02/27/12 09:06 PM. live every 24 hour block of time like it's your last day on earth

Re: Carb Question Old School or New [Re: RapidRobert] #1187193 02/27/12 09:03 PM 02/27/12 09:03 PM
Joined: Mar 2003 Posts: 9,099 Rogue River, OR Jeremiah master
Jeremiah master Joined: Mar 2003 Posts: 9,099 Rogue River, OR	I cannot say this enough...if you are going to invest in a new Holley style carb. do yourself a favor and get one with removable air bleeds. You will thank yourself once you get it dialed in.

Re: Carb Question Old School or New [Re: Jeremiah] #1187194 02/27/12 09:09 PM 02/27/12 09:09 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: get one with removable air bleeds. are there any other adjustable (sub)systems I should have in a carb purchase other than the norm live every 24 hour block of time like it's your last day on earth

Re: Carb Question Old School or New [Re: lewtot184] #1187195 02/28/12 04:09 AM 02/28/12 04:09 AM
Joined: Aug 2003 Posts: 43,157 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,157 Bend,OR USA	Quote: will the ld340 ports line up with the 318 heads? the LD340 ports are quiet a bit bigger than the ports on most 318 heads, I would not try that unless you want to port the 318 heads bigger than they are now Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Carb Question Old School or New [Re: Cab_Burge] #1187196 02/28/12 04:20 AM 02/28/12 04:20 AM
Joined: Jul 2011 Posts: 817 Eugene, Oregon Secret Chimp super stock
Secret Chimp super stock Joined: Jul 2011 Posts: 817 Eugene, Oregon	I got a 625 cfm Carter AVS for $80 off of eBay and rebuilt it with a kit from Mike's for $40. I just fired it up tonight on top of a standard Performer intake and it works great. 85% of a new Thunder AVS for a third of the price. Stupid easy to tune too. 1967 Dodge Coronet Deluxe station wagon 1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s

Re: Carb Question Old School or New [Re: MD72] #1187197 02/28/12 08:48 AM 02/28/12 08:48 AM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	Quote: Can I keep the stock fuel pump? The stock pump should work fine. The Edelbrock will need a regulator though; the needle won't shut off the fuel flow with over about 4.5 lb pressure. The Holly regulator is best.

Re: Carb Question Old School or New [Re: RapidRobert] #1187198 02/28/12 12:50 PM 02/28/12 12:50 PM
Joined: Mar 2003 Posts: 9,099 Rogue River, OR Jeremiah master
Jeremiah master Joined: Mar 2003 Posts: 9,099 Rogue River, OR	Quote: Quote: get one with removable air bleeds. are there any other adjustable (sub)systems I should have in a carb purchase other than the norm I am not sure I understand your question Robert.

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