Six Pack Carb - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer Six Pack Carb

Print Thread

Six Pack Carb #2871317 01/08/21 07:54 PM 01/08/21 07:54 PM
Joined: Feb 2015 Posts: 265 Philadelphia, PA GTXKARL OP enthusiast
GTXKARL OP enthusiast Joined: Feb 2015 Posts: 265 Philadelphia, PA	Hi. I was wondering if anyone could tell me the difference between a 340 center carb or a 440 center carb? Will a 340 work on a 440? Thanks. “Working on cars teaches you patience... and every curse word imaginable.” 1970 Plymouth GTX -- A true gentleman's coupe, but a serious muscle machine.

Re: Six Pack Carb [Re: GTXKARL] #2871390 01/08/21 10:27 PM 01/08/21 10:27 PM
Joined: Feb 2006 Posts: 643 southern conn 1 1969gtx mopar
1969gtx mopar 1 Joined: Feb 2006 Posts: 643 southern conn	the list # and jet size i put a 440 crab on a 340 work grate 1965 A/FX Plymouth 9.50 et @139 mph 1965 A/FX awb plymouth flashback [email]10.26@129mph[/email] mph on pump gas 426 hemi 1969 GTX Hemi 4 speed 12.50 et @ 112mph in F.A.S.T TRIM 1970 GTX 4406pac 4 speed 11.05 @126.9 mph in F.A.S.T TRIM http://www.AFXER.com

Re: Six Pack Carb [Re: 1969gtx] #2871482 01/09/21 08:43 AM 01/09/21 08:43 AM
Joined: Jan 2003 Posts: 6,381 Abilene, Texas F fastmark master
fastmark master F Joined: Jan 2003 Posts: 6,381 Abilene, Texas	The meter block is different but I can’t tell you the difference. The emulsion tubes inside have different holes but you can’t get in there to measure them. Different cams have different vacuum so they all require tweaking some. Sometimes they interchange fine. The air bleeds may be different as well. I have never measured those. Last edited by fastmark; 01/09/21 08:48 AM.

Re: Six Pack Carb [Re: fastmark] #2871508 01/09/21 10:21 AM 01/09/21 10:21 AM
Joined: Dec 2007 Posts: 18,157 Mass DAYCLONA I Live Here
DAYCLONA I Live Here Joined: Dec 2007 Posts: 18,157 Mass	Originally Posted by fastmark The meter block is different but I can’t tell you the difference. The emulsion tubes inside have different holes but you can’t get in there to measure them. Different cams have different vacuum so they all require tweaking some. Sometimes they interchange fine. The air bleeds may be different as well. I have never measured those. Agreed,... also regarding the air bleeds, they are larger on the 340 carbs, also the #4790 340 (auto) center is 350 cfm, the #4791 340 (manual) center carb is 355 CFM As far as the OP's question on using a 340 carb(s) on a 440, no problem, I actually prefer running the 340 carbs on B/RB applications, mostly for the larger air bleeds Mike

Re: Six Pack Carb [Re: DAYCLONA] #2871541 01/09/21 11:26 AM 01/09/21 11:26 AM
Joined: Feb 2015 Posts: 265 Philadelphia, PA GTXKARL OP enthusiast
GTXKARL OP enthusiast Joined: Feb 2015 Posts: 265 Philadelphia, PA	Do you know what size jets are in a center stock 440 carb? What size are in a stock 340 carb? Thanks in advance. “Working on cars teaches you patience... and every curse word imaginable.” 1970 Plymouth GTX -- A true gentleman's coupe, but a serious muscle machine.

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1