• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

400 bb

66 convert

66 convert

Active Member
Local time
12:36 PM
Joined
Apr 28, 2013
Messages
42
Reaction score
11
Location
Cherry valley il.
1972 400 purple shaft cam (not sure which one ), edelbrock performer intake,new 625 cfm street demon carb,1970 440 heads,mopar performance distributer with orange box,edelbrock performer fuel pump.At idle the the motor has 6 to 7 hg vacuum.I just put lighter metering rod springs in which did help.I also have a factory hemi stall speed in trans.Car will idle from cold for 30 minutes.Put it in gear everything is fine runs good.Drive the car for 30 minutes it runs good until you get to a stop light and the idle will drop off and stall.It will get worse as the engine bay heats up (but motor doesn't over heat)Help I am open for suggestions very frustrated.Thanks 66 convert
 
Last edited:
Punctuation!
 
Sounds like vapor lock, insulate the fuel line and use a phenolic or wood carb spacer to isolate the carb from the heat in the manifold.
 
sounds like the float level is too high or you have a sticky/dirty needle valve and is causing a float bowl to fill up and dump gas... just something else to check
 
Last edited:
I am using a edelbrock heat insulator.What would use to insulate the fuel lines with.Have delt with this issue nice last summer.Installed a new valley pan with the heat crossovers blocked last week that didn't help either.
 
On my Charger i have messed around wtih normal househould plumbing type insulated pipe wrap. i couldn't really see a difference. The biggest difference came from a 1/2 inch wood carb spacer(largest that fits under the hood) and a high volume electric fuel pump that keeps the line full of liquid fuel and doesn't allow it to vaporize.
 
You must log in or register to reply here.

Similar threads

S
Cam shaft.
2 3
Replies
43
Views
2K
T Brashears
T
M
Yet another timing problem!
2
Replies
32
Views
3K
mr_spock
M
6
440 Running Rich
Replies
5
Views
2K
Geoff 2
G
justanotherguy
Smokey burnouts..
2
Replies
34
Views
2K
chargervert
chargervert
justanotherguy
Guess my cam
2
Replies
28
Views
2K
PsyOps
P
Auto Transport Service
Back
Top