z28gsxr

iTrader: (4)

A friend of mine gave me a 4 barrel holley that he says was either a 600 or 650 double pumper. I wanted to find the exact model of the carb but have failed. I found the following numbers on the carb

List-6708-1 0199 . I also see 7445, 8672, GR 4950

Any ideas of what carb this could be?

9000th01ss

iTrader: (10)

List 6708 is a model 4150, 650 double pumper. The -1 indicates stock jet and power valve sizes of 54 front, 85 rear, front power valve 6.5, no rear power valve.

z28gsxr

iTrader: (4)

thanx. Any way of knowing if it has mechanical secondaries?

1 FMF

iTrader: (1)

there is a holley list # pdf catalog available somewhere in their site, 22 pages.

page 7 lists R6708-1

model 4150 650cfm,
renew kit 37-1539
trick kit 37-933
needle & seat 6-504
primary main jet 122-542
secondary main jet or plate 122-85
power valve 125-65
pump nozzle size primary 0.025
secondary nozzle size 0.037
primary bowl gasket 108-92-2
pri metering block gasket 108-91-2
sec bowl gasket 108-92-2
sec metering block gasket 108-91-2
venturi diameter primary 1-3/32
venturi diameter secondary 1-9/16
throttle bore diam primary 1-1/2
throt b diam secondary 1-3/4

your pic shows mechanical secondaries. if it were vacuum secondaries it would have a vacuum secondary diaphram mechanism like this

9000th01ss

iTrader: (10)

A double pumper is I guess a nick name for a Holley with mechanical secondaries.
Plus if you open the throttle by hand and all four open, it's a mechanical secondary carb.
Plus looking at the pics, yes it is mech sec.
Now you know three ways on ID'ing one.

z28gsxr

iTrader: (4)

Great thanx for the info. I searched google for hours last night before deciding on creating a thread.

1 FMF

iTrader: (1)

carb numerical listing, page 7
http://www.holley.com/TechService/Library.asp

also, specification manual for every model
http://www.holley.com/data/Products/...99R10015-1.pdf

z28gsxr

iTrader: (4)

thanx for the help. I cleaned the carb last night. I will be doing a motor swap this weekend and slapping on the carb. Then depending on how the carb behaves I will order the rebuild kit.

Paul Grant

I have been asked to find info on a Holley carb #2731 List 6160-1 . Need to know CFM and make of car or engine it would fit.

mr.beachcomber

According to Holley's Technical Library Listing using the link above, no such List number was ever used by Holley. Go back and check your source, or, better yet, post a photo of the choking house List number.

Good luck!

joyridin'

iTrader: (1)

That carb was built specifically for Chrysler by Holley for the 1970-72 C Bodies. (Polara, Monaco,, Imperial). Not the easiest to find parts for, but not impossible.

mr.beachcomber

Thanks for the info. (Can't believe that Holley wouldn't have info on this carb in their own numerical listing of carbs.) Anyway, Did a quick Goggle Search on the carb's list # and here's what came up:

1) Used on the 70-72 Chrysler Imperial 440 engines with automatic transmissions hence the Chrysler kick down linkage shown in these pictures.

2)Only Tech data that Holley had can be found here. (It's a PDF file with float levels, choke settings, etc. No CMF, jetting, or Venturi diameter data.)

Have some friends in the local MOPAR club looking for data, but they've come up empty-handed too.