Holley carb ?

« **on:** April 17, 2008, 11:09:26 AM »

i got this carb from River Dad with the engine i bought from him

Now i wanna know if this is practical for my application... Dont know what the CFM is it has so many #'s on it
8620
8551
6501
6513
L47802

The 4780 comes up as a 800 CFM carb, im just taking a wild guess here that thats the number?
Im running BBC yeah CHEBY

mild cam and 020 over pistons. I did a search on the Holley site and they recommend a 750 CFM

So is the 800 to much?
2sav

« **Reply #1 on:** April 17, 2008, 11:54:13 AM »

Just run it once and see how it works. Then adjust from there

« **Reply #2 on:** April 17, 2008, 12:00:04 PM »

Quote from: pw_Tony on April 17, 2008, 11:54:13 AM

Just run it once and see how it works. Then adjust from there

It needs to be rebuilt , and i dont want to spend money twice Or i wont make it to Parker

I think i will just sell it and buy a new 750 something like what brad has.. That is a nice carb

2sav

« **Reply #3 on:** April 17, 2008, 12:18:16 PM »

Quote from: 2savage4you on April 17, 2008, 12:00:04 PM

I think i will just sell it and buy a new 750 something like what brad has.. That is a nice carb

2sav

how deep are your pockets? im still on the "hot pockets for breakfast/lunch/dinner" budget....but it was worth every penny.

« **Reply #4 on:** April 17, 2008, 12:19:59 PM »

I'll get slammed by all the Holley Purists out there but I'll tell you, the Edlebrock 1407, 750cfm carb I just bought and installed was easy to adjust and works great.

« **Reply #5 on:** April 17, 2008, 12:25:19 PM »

Quote from: Brad @ SoCalJetBoats.com on April 17, 2008, 12:18:16 PM

how deep are your pockets? im still on the "hot pockets for breakfast/lunch/dinner" budget....but it was worth every penny.

Damn ive been on the top ramen budget since the Bahner arrived........... Hot Pockets are gourmet food

2sav

« **Reply #6 on:** April 17, 2008, 12:31:56 PM »

Quote from: 2savage4you on April 17, 2008, 12:25:19 PM

Damn ive been on the top ramen budget since the Bahner arrived........... Hot Pockets are gourmet food

2sav

haha....ramen....back in my younger days thats all i ate...made for more beer/party money. the smell of it makes me sick.

« **Reply #7 on:** April 17, 2008, 12:34:51 PM »

Quote from: Brad @ SoCalJetBoats.com on April 17, 2008, 12:31:56 PM

haha....ramen....back in my younger days thats all i ate...made for more beer/party money. the smell of it makes me sick.

Yeah me too , but its either steak on the table or boat in the water

and with five kids

2sav

« **Reply #8 on:** April 17, 2008, 12:52:59 PM »

2sav,

I would recommend overhaul the carb you have, run it and see how it works out. My engine is stock with mild cam, running 2 600 vacuum secondary carbs (little overkill but that's what it had on it).

If you can get it to me I'll overhaul it for you (the only part I haven't done is new bushings).

Call me (909)376-8843

crewchief22

« **Reply #9 on:** April 17, 2008, 01:15:00 PM »

Quote from: crewchief22 on April 17, 2008, 12:52:59 PM

2sav,

I would recommend overhaul the carb you have, run it and see how it works out. My engine is stock with mild cam, running 2 600 vacuum secondary carbs (little overkill but that's what it had on it).

If you can get it to me I'll overhaul it for you (the only part I haven't done is new bushings).

Call me (909)376-8843

crewchief22

Man that would be great , but at the moment every penny i have is going toward the upholstery when its done. So it might be a week or two before i can pick up a rebuild kit and get it to you. Thank you for the help , i have done the 2 barrel holley's and they are a piece of cake. But the four barrel's i will probably screw up and i dont want that

Thanks.
2sav

« **Reply #10 on:** April 17, 2008, 01:15:26 PM »

Run it! The 800 will be fine!

« **Reply #11 on:** April 17, 2008, 01:26:20 PM »

That 800 is a mech. secondary carb and IMO just right for your BBC. Did the Holley site ask you if it was for a marine application? Jet boat ap.? Is the 800 still sold/available? (if it isn't then that would be a real good reason why they wouldn't recomend it) I have never been to the Holley site looking for a recomendation but with all the variables in ap's I can't see it being 100% perfect. Your engine won't know the difference between a 750 vs. a 800.

RUN IT!!!

« **Reply #12 on:** April 17, 2008, 01:30:36 PM »

Quote from: hotrod56cars on April 17, 2008, 01:26:20 PM

That 800 is a mech. secondary carb and IMO just right for your BBC. Did the Holley site ask you if it was for a marine application? Jet boat ap.? Is the 800 still sold/available? (if it isn't then that would be a real good reason why they wouldn't recomend it) I have never been to the Holley site looking for a recomendation but with all the variables in ap's I can't see it being 100% perfect. Your engine won't know the difference between a 750 vs. a 800.

RUN IT!!!

Yes its mech secondary's , just what i want.. I went back to Holley and played around and now it say's i can run a 950 CFM carb so yeah it will work.......Dont know about production on this carb and i put it in as a race set up with a mild build. They have marine but i dont have a closed engine cover so i can use car/truck carbs

2sav

« **Reply #13 on:** April 17, 2008, 01:46:27 PM »

Quote from: crewchief22 on April 17, 2008, 12:52:59 PM

... Call me (909)376-8843

crewchief22

So 2Sav, did you?

« **Reply #14 on:** April 17, 2008, 01:52:27 PM »

I think that most people "in the know" say to run a slightly bigger carb on a boat than you would in a car. 750 or 800 isn't gonna have any noticeable difference out on the water. Run it when you can for a baseline then jet it carefully and you're all set. No worries.

« **Reply #15 on:** April 17, 2008, 02:52:38 PM »

Quote from: 2savage4you on April 17, 2008, 12:34:51 PM

....and with five kids

2sav

DAMN!!! ZIP YOUR PANTS MAN!!!

« **Reply #16 on:** April 17, 2008, 04:34:10 PM »

Quote from: hotrod56cars on April 17, 2008, 01:26:20 PM

That 800 is a mech. secondary carb and IMO just right for your BBC. Did the Holley site ask you if it was for a marine application? Jet boat ap.? Is the 800 still sold/available? (if it isn't then that would be a real good reason why they wouldn't recomend it) I have never been to the Holley site looking for a recomendation but with all the variables in ap's I can't see it being 100% perfect. Your engine won't know the difference between a 750 vs. a 800.

RUN IT!!!

I can tell you with 100 % certainty that is NOT designed for a marine application - it doesn't have J tubes.

It will still work though, most carbs run on boats aren't marine carbs...

« **Reply #17 on:** April 17, 2008, 08:29:37 PM »

Quote from: speedymopars on April 17, 2008, 04:34:10 PM

I can tell you with 100 % certainty that is NOT designed for a marine application - it doesn't have J tubes.

It will still work though, most carbs run on boats aren't marine carbs...

I didn't say his 800 was a marine carb...

« **Reply #18 on:** April 17, 2008, 08:31:14 PM »

Quote from: hotrod56cars on April 17, 2008, 08:29:37 PM

I didn't say his 800 was a marine carb...

Yes we know , we covered that way back.

2sav

« **Reply #19 on:** April 17, 2008, 08:35:48 PM »

2sav,

If you can get the carb to me (ship or SCJB delivery service) I can get it cleaned and ready to go. You can order parts from Summit or Jegs and have it shipped to me, or I can get them locally and bill you.

I would like to deliver it to you instead of shipping it. I'm planning on being back in Parker on Mothers Day weekend, maybe we can meet somewhere near Havasu.

Let me know what works for you.

crewchief22

« **Reply #20 on:** April 17, 2008, 09:45:03 PM »

2sav check the shafts make shure there not loose get kit checkers in bull head has holley kits and ill show you how to re build its not hard and im just over the hill . dave 702 326 5717

« **Reply #21 on:** April 18, 2008, 12:11:22 AM »

I have an Edelbrock Marine 750 I'll sell or trade. I bought it new and it has about 12 lake trips on it.

« **Reply #22 on:** April 18, 2008, 05:41:13 AM »

Quote from: The Chaz on April 18, 2008, 12:11:22 AM

I have an Edelbrock Marine 750 I'll sell or trade. I bought it new and it has about 12 lake trips on it.

Chaz, Don't you like the carb? Wish you had had this about 2 months ago.

« **Reply #23 on:** April 18, 2008, 06:40:02 AM »

Quote from: crewchief22 on April 17, 2008, 08:35:48 PM

2sav,

If you can get the carb to me (ship or SCJB delivery service) I can get it cleaned and ready to go. You can order parts from Summit or Jegs and have it shipped to me, or I can get them locally and bill you.

I would like to deliver it to you instead of shipping it. I'm planning on being back in Parker on Mothers Day weekend, maybe we can meet somewhere near Havasu.

Let me know what works for you.

crewchief22

2sav this is your best bet, ive seen first hand crewcheif's attention to detail.

2savage4you

pw_Tony

2savage4you

Brad @ SCJB

GAWnCA

2savage4you

Brad @ SCJB

2savage4you

crewchief22

2savage4you

hotrod56cars

hotrod56cars

2savage4you

hotrod56cars

GlassCutter

GAWnCA

speedymopars

hotrod56cars

2savage4you

crewchief22

702fairlanedave

The Chaz

GAWnCA

Ralph Brunt