(Message Deleted by Poster)

[Roger Konkel]

Message Deleted by Poster

[David S.]

67/427/400hp tri power

I would like to know why also. My 1969 427/400 Tripower does the same thing but not all of the time. I know others with Tripowers that have the same problem too.

[Dave Stafford]

Re: 67/427/400hp tri power

I think with today's gasoline having a different vapor point than 1960's gas did, you have to set the level about a 1/4" below the sight glass (hole). At least try this before you tear into the carbs. Also, some have blocked the heat crossover under the center carb to help eliminate heat transfer.

Dave Stafford

[Roger Coen #30751]

Re: 67/427/400hp tri power

My 67 did the same thing and I asked around about it. I was told it was because the metering plates were warped and allowing gas to seep by.

I solved the problem with 3 NEW carbs from Holly ($1000).

[Wayne W.]

Re: 67/427/400hp tri power

It is common Holley-itis caused by the meetering plates being warped. A good rebuilder with knowledge of Holleys and this problem can solve the problem for much less than buying new carbs. Unfortunately the new carbs will be doing the same thing shortly.

[Scott Marzahl]

Re: 67/427/400hp tri power

Can't you just just flat file the metering plates and mating body. I flat filed all the mating surfaces on my 3810 and the accelerator pump housing as none of them were flat. You might want to try talking to someplace like Quick Fuel Technology or another Holley shop. I have had outstanding customer and technical support from Marty at Quick Fuel Technology getting the quirks worked out of my 3810.