carb recommendation
 

What 4 barrel carb would you guys recommend as a replacement on my older stock SB 260 hp alpha? I have a 4 brl Q-jet, it need rebuilding so I thought it would be a good to just swap to something new insted of rebuilding. any suggestions?

Re: carb recommendation
 

What's your Budget?. I have a Barry Grant Mighty Sea Demon and I sent it to Nickerson Performance and had them re-work it what a difference. You will need a new manifold Edelbrock RPM Air Gap is what I used.

Re: carb recommendation
 

ive got two rebuilt qjet all set up for small block 300 hp after re build. sold the boat 100.00 ea you can pm me

Re: carb recommendation
 

650 Barry Grant Sea Demon.....Hands Down!

Re: carb recommendation
 

600 Edelbrock $299 http://www.cpperformance.com/product...-edelbrock.htm

Re: carb recommendation
 

Got One Of Those I'll Sell For $125.00 Bout 20 Hours On It

Re: carb recommendation
 

Been there done that with the Edelbrock.....Not a bad carb....But not even in the same ballbark with the Barry Grant....Ever heard a bad thing about one? I havent........

Re: carb recommendation
 

A rebuild kit is about $45. Unless you're making other mods, it wont run better or faster than with the Qjet. Spend the $45 and take an hour to rebuild it.
Gary

Re: carb recommendation
 

Not knocking the BG. 750 bit big for 260Alpha. 600 might be too

Re: carb recommendation
 

They make a 650 with vac or mech secondaries.....

Re: carb recommendation
 

What Gary said is correct....Spend the $45 and rebuild yours and if you are not satisfied go new........

Re: carb recommendation
 

How did those carbs work out for you? I believe you bought them from me, yes? I agree on staying with the qjet, it really is a great carb and I wish I'd kept mine just to have.

BT :cool:

Re: carb recommendation
 

Thanks guys , great feedback. So go with the rebuild you say! I may just end up doing that .

How about this barry grant 650? I have a 1979 260hp, will I have to change out the manifold to fit the BG carb? And will it run well with my stock engine?

Who sells Barry grant carbs? how easy are they to tune.

The main reason I think my carb needs rebiult is I can not get it to idle anymore. It will idle at 1100 but it seems to have a miss. some=times the thing will idle but most of the time it has a hard time. in "N" it idles pretty good, as soon as I put it into drive it stalls unless I goose it some.

Thanks again.

Re: carb recommendation
 

Call Barry Grant and tell them where your at and where you want to be they will help. CP Performance sells them thats where I got mine.

Re: carb recommendation
 

You really are going to spend a lot of money on a BG carb and a new intake. I hope you're not expecting to see any significant HP increases. Your limitations are your heads, cam, compression and if you have it your thru-prop exhaust. You are currently using a spreadbore and you will actually lose throttle response by going to a square bore. You have a 5.7 liter, What is your max RPM? I'm going out on a limb and say 5200. Those numbers require less than 530 CFM to operate at 100% Volumetric efficiency. And you are probably only running in the low 80s VE with that engine. And now you want to go with a 650 BG with a larger volume intake? This will further lower the VE making your engine feel sluggish. I'm not trying to offend anyone but I have been building HP EFI engines with the goal of getting high VE numbers. You can get a lot of HP out of a smaller engine this way (like 1239-HP out of 2933cc) The days of bolting on an aluminum intake and bigger carb are over. You will make it look nicer but it won't run any faster.

Roby

Re: carb recommendation
 

You'll need a new manifold. BG is squarebore, the Qjet and your current manifold are spreadbore. They make adapters, but I'm not a big fan of their use.
You'll also have to change the choke mechanism. ie wire for electric.
The BGs are much like holleys, fairly easy to tune.But the only reason for replacing the carb is if the throttle shafts are worn to the point of causing a vacuum leak, or salt has just eaten them up.

Re: carb recommendation
 

Compare it to an EFI system then you will start hearing the bad... Like:

I can't keep up!
If only I installed those larger jets.
I wish I had a choke lever.
Careful, don't move the throttle or you'll flood it.
Pump it a few times; it'll start.
Wheres the starting fluid?
I'm letting it cool off so I can start it again.
This thing sucks the gas.
Aww crap not another leak.
Is this thing heavy enough to anchor my boat?

:D:D
Roby

Re: carb recommendation
 

Paragon,

I'd start with a compression test. If thats ok, then new plugs, wires/cap/rotor check timing, replace fuel/water separator, then get into carb.

Like Gary said...IF it's not leaking at throttle shaft then rebuild kit probably OK.

Re: carb recommendation
 

:rolleyes: :D :D :D

Re: carb recommendation
 

Or What the heck does this code mean is this the one that won't let it start :evilb:

Re: carb recommendation
 

Aww that's funny :D:D Can you come up with 9 more?

Roby

Re: carb recommendation
 

I just rebuilt both my qjets this winter, you can get the rebuild kits at any speed shop, I bought mine at the local NAPA store for around $25 and it's the same as the marine kit you buy for $45. Plus their pretty easy to rebuild, I've never worked on a carb before and I managed to rebuild both of them and get them re-installed with no problems.

Re: carb recommendation
 

Damn I think the magic smoke got out of the computer

Where the hell does this plug go

I hooked up my laptop to it and pac-man started

I thought the computer said the rev limiter was at 5000 RPM so why is the tach reading 12,500 RPM

The sticker on the bottom says Cummings Diesel

Good got the computer set up and now the injectors are plugged

OK new injectors installed but the computer doesn't see them

Good re-configured computer for new injectors now it cant find the fuel pump

Finally got the computer set up for the pump and injectors looks like she's gonna start.

Turned the key and the horn blows ****

What's this new code "DIAL 911"

:evilb:

Re: carb recommendation
 

Wow........

It's the Letterman top ten :rolleyes:

Nice lists Badtoon & Roby

Re: carb recommendation
 

:D:D those are pretty good

Re: carb recommendation
 

Paragon

No kidding bolting on a 650 BG will get you nowhere. A SB needs to BREATH so you will need several new pieces to get full benefit of a new Bigger carb.

Re: carb recommendation
 

I have to agree with Gary on this one. Get the rebuild kit. The money you'll spend on a BG for a stock engine will be a waste. I'm running a Q-jet with a few simple mods, and some jetting on a 383 stroker with a cam, and heads, and it works beautifully. Just take your time with the rebuild, and make sure everything is clean. There are a few simple mods you can do like covering the lower well plugs with JB weld, and there's a great document on the web about tuning the Q-jet. Do a search on the web. You'll be surprised with all the info you'll find. Save your money for your next engine. Then buy the BG:)