Needed..picture of a double pumper

[Kid_Again]

I would appreciate it if someone could post a picture of the secondary linkage side of a holley double pumper. I removed all that stuff when I bought the carb and put it on my current engine but will need to reinstall the linkage when I go to a blower. I have the carb and linkage so I'm just looking for a head start.

Thanks!

 

[BarryK]

please excuse my ignorance, but is a double pumper the same as a 4-barrel just different termology or it is something altogether different?

if it's the same, I do have pics of my carb (Holley 2818-1) showing the linkage on my website

 

[67HEAVEN]

please excuse my ignorance, but is a double pumper the same as a 4-barrel just different termology or it is something altogether different?

if it's the same, I do have pics of my carb (Holley 2818-1) showing the linkage on my website

Accelerator pump in both primary and secondary bowls.

 

[BarryK]

thanks Bob
I guess that means my 2818-1 is just a 4-barrel single pumper.

I've heard the term double pumper so many times and never really understood it.

sorry Kid, I guess the pics on my website won't do you any good afterall

 

[Viet Nam Vett]

Accelerator pump in both primary and secondary bowls.

He said Bowls........:L

 

[BarryK]

He said Bowls........:L

what are you smoking this morning Mark??

 

[Viet Nam Vett]

what are you smoking this morning Mark??

Don't Bogart That Joint My Friend... Dee ..Dee.. Dum.. Dumm.... :dance

 

[BarryK]

Don't Bogart That Joint My Friend... Dee ..Dee.. Dum.. Dumm.... :dance

I never bogart. Besides, it's a bit early in the day for that stuff, i always wait until at least 11am!

 

[Kid_Again]

NTW, I appreciate the attention.

A double pumper is the LAST carb that you would install on even a fairly modified street machine. Primary and secondary accelerator pumps and mechanical secondaries. Guys who run these carbs on their street machines are just kidding themselves. If they are honest, they will admit that there is so much gas going into the intake that they have wet plugs all the time, probably have stepped up the heat range at least one notch, jetted down both sides of the carb and are running the smallest squirters on both sides of the carb. All that just to look cool. Besides, you REALLY want vacuum secondaries for the street.

So, why did I go with a double pumper for my car? First, I'm a cheap SOB and I got a better deal on a new double pumper. Second, I pull off the seconday pumper linkage for any street machine (shoulda' taken a picture of the linkage ). Finally, I was pretty sure that I would be going to a blower and the vortech kit that I settled on does not need a manifold-referenced carb but does need a double pumper with mechanical secondaries. Two reasons for that...you need the secondary pumper to help control the transition to the primary metering system and the vacuum control for the secondaries is useless on a blown application - different vacuum readings entirely.

Thanks for the help!

 

[67HEAVEN]

Thanks for the help!

There was help?

 

[BarryK]

There was help?

 

[JohnZ]

I would appreciate it if someone could post a picture of the secondary linkage side of a holley double pumper. I removed all that stuff when I bought the carb and put it on my current engine but will need to reinstall the linkage when I go to a blower. I have the carb and linkage so I'm just looking for a head start.

Thanks!

The only double-pumper photo I have in my files is this one of an L-88 carb; shows the cam and lever for the secondary accelerator pump. Don't have one of the other side. Should be photos of them in the Summit and Jeg's catalogs, or on the Holley site.

 

[Viet Nam Vett]

Guys who run these carbs on their street machines are just kidding themselves.

Yeah.....Puddle Pumper Dumper.......:L

 

[tigernut]

Yeah.....Puddle Pumper Dumper.......:L

I never had a problem running one on my old 68 Camaro, but it had a pretty radical small block in it.

I wouldn't consider putting one on a stock factory engine, though.

 

[Kid_Again]

There was help?

Well, no there wasn't at that point in time, but as usual JohnZ shows up with the goods. John, consider it a thanks in advance!

Every picture that I've seen of the double pumper on the Holley website or just about anywhere else only shows the primary linakge side of the carb. It's kinda' like all the purty pictures in the JegsSummit catalog with the fuel lines attached to the carbs in the wrong direction.

I know of a guy (no last names here) who spent a fortune for his midyear, added the old closed chamber aluminum heads and lumpa-lumpa cam and finally put on a monster double pumper. Ran like a pig at anything less than 4000rpm and the plugs were constantly wet.

 

[JL66REDCPE]

Joe -- MF Dobbins book "Fact Book of the 1963-1967 Stingray" has picture of the L-88 carb on pages 268-270. I think the picture you want is on page 270. As I remember the 850 cfm L-88 carb was a double pumper.

Also Noland Adams book has pictures starting on Page 423.

By the way are you going to the AC show ??? I will be there Friday only.

 

[Kid_Again]

Hey John!

Thanks for the info.....

I'm really disappointed that I can't get out to the show. Hope you enjoy it. It's kind of a rite of spring and I'll miss it. What I won't miss is riding on a NJ Transit car that's older than I am. otfl

 

[Viet Nam Vett]

Joe -- MF Dobbins book "Fact Book of the 1963-1967 Stingray" has picture of the L-88 carb on pages 268-270. I think the picture you want is on page 270. As I remember the 850 cfm L-88 carb was a double pumper.

Also Noland Adams book has pictures starting on Page 423.

By the way are you going to the AC show ??? I will be there Friday only.

I'll be Carpeting my 65 in the Gee-Rage..Stop over if your in the Neighboorhood Saturday..

 

[Kid_Again]

not sure because i leave for a business trip on sunday...will stay in touch

 

[JL66REDCPE]

Mark -- a freind is buying that 81 I looked at last week in DE. We are going to pick it up Saturday. Going to trailer it home.