Vapor Lock issues

[m79ded]

Hi

I'm having Vapor lock issues on my 451 It had a 3/8 in and out no return.
I put in a Mopar 5/16 in and out 1/4 return and solved the ussue except fittings on carter HP pump are 3/8 and hoses came loose 2 times and scared of fire hazzard. Looking for a 3/8 inand out with 1/4 " return and I see a bunch of part numbers and it seems not an easy part to find. Anyone know where they sell those? I found a cross ref and only was able to find the A/C Delco from GM resto shop. If anyone has some help on that greatly appreciate it

• AC-DELCO GF98
• ATLAS FF12
• BALDWIN BF887
• BIG-A 95041
• CARTER GF18
• DELUXE 73012
• FLEETGUARD FF243
• Fram G18
• GENERAL MOTORS 5650829
• GENERAL MOTORS 5651119
• HASTINGS GF20
• LEE LG1118
• MOTORCRAFT FG12
• NAPA 3041
• PUROLATOR GF1118
• WIX 33041

 

[MWbirdLOVER70]

Hi

I'm having Vapor lock issues on my 451 It had a 3/8 in and out no return.
I put in a Mopar 5/16 in and out 1/4 return and solved the ussue except fittings on carter HP pump are 3/8 and hoses came loose 2 times and scared of fire hazzard. Looking for a 3/8 inand out with 1/4 " return and I see a bunch of part numbers and it seems not an easy part to find. Anyone know where they sell those? I found a cross ref and only was able to find the A/C Delco from GM resto shop. If anyone has some help on that greatly appreciate it

• AC-DELCO GF98
• ATLAS FF12
• BALDWIN BF887
• BIG-A 95041
• CARTER GF18
• DELUXE 73012
• FLEETGUARD FF243
• Fram G18
• GENERAL MOTORS 5650829
• GENERAL MOTORS 5651119
• HASTINGS GF20
• LEE LG1118
• MOTORCRAFT FG12
• NAPA 3041
• PUROLATOR GF1118
• WIX 33041

Maybe use a 3/8 out female reducer to size you need at hardware store

 

[Cene]

Hi

I'm having Vapor lock issues on my 451 It had a 3/8 in and out no return.
I put in a Mopar 5/16 in and out 1/4 return and solved the ussue except fittings on carter HP pump are 3/8 and hoses came loose 2 times and scared of fire hazzard. Looking for a 3/8 inand out with 1/4 " return and I see a bunch of part numbers and it seems not an easy part to find. Anyone know where they sell those? I found a cross ref and only was able to find the A/C Delco from GM resto shop. If anyone has some help on that greatly appreciate it

• AC-DELCO GF98
• ATLAS FF12
• BALDWIN BF887
• BIG-A 95041
• CARTER GF18
• DELUXE 73012
• FLEETGUARD FF243
• Fram G18
• GENERAL MOTORS 5650829
• GENERAL MOTORS 5651119
• HASTINGS GF20
• LEE LG1118
• MOTORCRAFT FG12
• NAPA 3041
• PUROLATOR GF1118
• WIX 33041

Looks like me and you are in the same boat lol. I typed in all of these part numbers and nothing came back. Seems like only 5/16 are available. I know this post was a few months ago but let me know if and where you ended up finding one. The only thing I have found is the GF-98 on ebay which is a gm fuel filter..runs about $40-50 bucks or the reproduction mopar vapor separator which is also on ebay and a few online sites, but has to be mounted to the fuel pump with the attached bracket. I'm guessing the standard ones above aren't produced anymore but it would be nice to find a place with some leftovers in the back of the warehouse.

 

[4speed68rt]

Mopar vapor separator is what you need. 5/16" diameter line is plenty big enough for almost any street application. I have not been able to find any of the 3/8" filters with the 1/4" return port on them, lately. If 3/8 hoses are slipping off of the 5/16 fittings, go the other way, put the 5/16" hose onto the 3/8" fittings.

 

[coronet68mx]

Check this