Posted By: MD72
Carb Question Old School or New - 02/27/12 08:03 PM
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?
Carb Question Old School or New
Posted By: babarracuda
Re: Carb Question Old School or New - 02/27/12 08:14 PM
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.
Posted By: dogdays
Re: Carb Question Old School or New - 02/27/12 09:45 PM
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.
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.
Posted By: MD72
Re: Carb Question Old School or New - 02/27/12 10:00 PM
Can I keep the stock fuel pump?
Posted By: lewtot184
Re: Carb Question Old School or New - 02/27/12 10:20 PM
will the ld340 ports line up with the 318 heads?
Posted By: RapidRobert
Re: Carb Question Old School or New - 02/28/12 12:55 AM
Quote:My OE 318 fuel pump puts out over 7 psi
Can I keep the stock fuel pump?
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
Posted By: Jeremiah
Re: Carb Question Old School or New - 02/28/12 01:03 AM
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.
Posted By: RapidRobert
Re: Carb Question Old School or New - 02/28/12 01:09 AM
Quote:are there any other adjustable (sub)systems I should have in a carb purchase other than the norm
get one with removable air bleeds.
Posted By: Cab_Burge
Re: Carb Question Old School or New - 02/28/12 08:09 AM
Quote: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
will the ld340 ports line up with the 318 heads?
Posted By: Secret Chimp
Re: Carb Question Old School or New - 02/28/12 08:20 AM
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.
Posted By: ahy
Re: Carb Question Old School or New - 02/28/12 12:48 PM
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.
Posted By: Jeremiah
Re: Carb Question Old School or New - 02/28/12 04:50 PM
Quote:Quote:are there any other adjustable (sub)systems I should have in a carb purchase other than the norm
get one with removable air bleeds.
I am not sure I understand your question Robert.