Holley 80770-1 Carb info request Grumpy

8

87vette81big

Guest
I have a chance to buy a lightly used Holley Street Avenger Carb 770 cfm with electric choke. Vacuum seconday.
Dual external chrome feed lines to the float bowls.
Single pumper.
Primary idle circuit only.
I want to use it on my 1965 Olds 425 A engine Grumpy.
The factory intake is square bore 4150 4-hole flanged.

Are secondary metering block in this carb fixed ?
Or does it use standard Holley brass jets?

What is the stock calibrated jetting out of the box new ?

Value $125-150 ?

Thanks Grumpy.
 
  1. fuel_log_lga.jpg

    larger image
    Telescoping Fuel Log Fits All Demon® Fuel Bowls
    $175.00
    Please Choose:
    Color
    Black
    Blue
    Grey
    Purple
    Size


    Add to Cart:
    • Model: 75112
    • Shipping Weight: 2lbs
    • Manufactured by: BLP

    BLP BILLET TELESCOPING FUEL LOG

    Telescoping Fuel Log Fits All Demon® Fuel Bowls, 9/16-24

    BLP offers a telescopic fuel log for Holley® performance carburetors. One part number fits all Holley® carburetors from a 0-3310 vacuum secondary to a 4500 dominator. Fuel log is made in (2) parts with one telescoping inside the other and is sealed with (2) Viton® o-rings which enables it to be shortened or lengthened with ease. Equipped with choice of BLP extended fuel inlet fittings for Holley®, Braswell™ or Demon® fuel bowls.

    Logs are supplied with -8AN or -10AN inlet fitting can be substituted please add -8 or -10 to end of part number to specify.


    BLP Racing Products, L


    Last edited by a moderator: Sep 11, 2015
    87vette81big, Sep 10, 2015 Edit History Delete IP Warn Report
    #150 Like + Quote Reply


  2. 87vette81big solid fixture here in the forum
    Home :: Fuel Pumps/Regulators/Fuel Filters :: Fuel Pumps
    Fuel Pumps
    fuel_pump_lga.jpg

    Belt Driven Fuel Pumps for Alcohol and Gas


    Alcohol has become a very popular race fuel to use with a Holley® carburetor. The big problem is the fuel supply requirement using alcohol. The fuel requirement is twice the amount needed with gasoline. A 700 HP engine consumes 700 pounds of fuel an hour when operating at full throttle. Simple math tells you that no electric and/or mechanical fuel pump will handle this requirement. The electric and 6 valve mechanical pumps have excessive high idle fuel pressure which can cause flooding and rich conditions at idle and part throttle but they cannot keep up with full throttle fuel demand. The solution to the problem is a fuel pump where the pressure is low (3-5 psi) at idle then increases with engine RPM and the pressure is fully adjustable to your needs.


    These pumps have become very popular on Drag Race engines using gasoline as well as alcohol. The fuel pressure
    is low when doing a water burn out and staging and does not have the high fuel pressure spike that is common with electric pumps. With an 800 HP engine it takes less than 1 HP to operate this pump. Also, there is no drain on the battery.


    At BLP Racing Products we have developed 2 versions of belt driven fuel pumps. One features an internal fuel by-pass system that enables the user to regulate and adjust the fuel pressure without having to use a separate by-pass valve and a return line to the tank. The second version is a fuel pump with no internal regulator and can be used with a BLP 7491 fuel by-pass regulator or the installer can use their own by-pass system.


    Doug Learned and his staff at Intercity Manufacturing Incorporated manufacture the pump component parts. BLP then assembles and tests the pumps in-house. The pumps are available in 4 different gear sizes .400”, .500”, 600”, and .700” thick gears. By using different thickness gear wear plates the same body can be used for all 4-size gears. This gives us the option of changing pump volumes by just changing the gears and wear plates.


    Features:
    • The adjusting arm can be rotated a full 360° without having to disassemble the pump
    • Pump can be used with or without a return line
    • All billet construction
    • Available in 4 volume sizes
    • Available for right or left hand mounting
    • Can be serviced in the field
    • Easily mounted with simple plumbing
    • 1 full year warranty including parts and labor


    WHICH FUEL PUMP IS BEST?
    In our opinion it is always best to use a –8 return line with a belt driven fuel pump. This type fuel return system handles fuel spikes better than an internal by-pass type pump. It also keeps the fuel cooler when using gasoline. However, having said that, BLP builds and sells more adjustable, internal by-pass fuel pumps than we do the return line style fuel pumps. The reason for that is they are simple to plumb and easy to adjust. Used in the right application and maintained properly they are virtually trouble free.


    External return Fuel Pumps
    Providing that you use the proper return regulator these fuel pumps can be used in any application.


    Features:
    • They handle fuel spike much better when you back off the throttle. This is very important in circle track racing to prevent fuel from loading up in the corners
    • You can have a lower idle pressure and a larger spread between idle and full throttle pressure


    NOTE:
    • Must use a –8AN return line (cannot use a –6AN)
    • Must use a quality and regularly maintained return regulator


    Internal By-Pass Fuel Pumps
    These fuel pumps by-pass the excess fuel internally to the low-pressure side of the fuel pump. The pressure is adjustable at the fuel pump. No regulators of any kind are required or recommended.


    Features:
    • Easy to install and does not require a return line
    • Easy to adjust and maintain


    MUST:
    • You cannot use the high volume .700 wide gear pump when internally regulated
    • Do not use in circle track application when using gas. It works fine with alcohol in any heat condition, but vapor lock can occur when using gas as a fuel.


    The keys to successfully using the internal by-pass fuel pump is to use our recommendation and do the following:
    • Size the pump correctly and do not use any larger pump than necessary. Bigger is not better.
    • The internal by-pass type pump has to have the fuel inlet line lower than the pump. For example, if you run a modified that has to run the fuel line up high on the chassis then you need to run an external by-pass pump.

    Fuel Pump Volumes
    The validity of advertised fuel pump volumes is only as accurate as the method used for testing. In other words, a fuel pump will show more volume if it is gravity fed with no outlet restriction than if the pump had to lift the fuel and maintain a constant pressure. This holds especially true with a mechanical fuel pump.
    Example: a mechanical pump may pump 108 gallons per hour at 1 pound of pressure but only 60 gallons per hour if it had to maintain 5 pounds of pressure. We test and flow our pumps in a real world environment. To simulate racing conditions we lift the fuel 18”, pump it through a 1/2” line and maintain race condition fuel pressure.


    BLP Fuel Pump driven at 50% of Engine Speed with A Fixed Pressure
    .400 Thick gear pump
    1800 Pump RPM at 50 PSI flows 81 GPH
    3500 Pump RPM at 10 PSI flows 98 GPH
    4000 Pump RPM at 11 PSI flows 113 GPH


    .500 1800 Pump RPM at 50 PSI flows 108 GPH
    3500 Pump RPM at 10 PSI flows 120 GPH
    4000 Pump RPM at 11 PSI flows 139 GPH


    .600 Thick gear pump
    1800 Pump RPM at 50 PSI flows 120 GPH
    3500 Pump RPM at 10 PSI flows 148 GPH
    4000 Pump RPM at 11 PSI flows 170 GPH


    .700 Thick gear pump
    1800 Pump RPM at 50 PSI flows 138 GPH
    3500 Pump RPM at 10 PSI flows 170 GPH
    4000 Pump RPM at 11 PSI flows 192 GPH


    FUEL PUMP SIZE APPLICATION
    We classify our fuel pumps by the gear thickness and we have (4) different gear sizes to choose from. If you compare the BLP fuel pump to a typical fuel injection pump such as a Hilborn or Enderle then use this as a volume comparison.


    BLP FUEL PUMP TYPICAL FUEL INJECTION PUMP
    .400 wide gear No comparison
    .500 wide gear 0 Pump
    .600 wide gear ½ Pump
    .700 wide gear 1 Pump


    A BLP .500 wide gear pump will handle most carburetor fuel volume needs. Installing the correct volume fuel pump is very important. Bigger is not always better and if the pump has to by-pass too much fuel then you will have problems with fuel spike. Contact BLP for the correct fuel pump application.

    Last edited by a moderator: Sep 11, 2015
    87vette81big, Sep 10, 2015 Edit History Delete IP Warn Report
    #151 Like + Quote Reply


  3. 87vette81big solid fixture here in the forum
    Home :: Complete Racing Carbs & Spacers :: Carburetor, Pro Flow Drag :: BLP Pro Flow Gas Drag Race Carburetors :: 4150 Series :: 40365AB
    4150 Series
    Product 2/3




    carb_blp_pro_flow_drag_lga.jpg

    larger image
    40365AB
    $1,150.00
    Add to Cart:

    • Shipping Weight: 20lbs
    • Manufactured by: BLP

    850 HP w/Billet Annular boosters

    • 1085 CFM
    • 1.590" Venturi
    • 1.750" Throttle Bore
    • Annular booster
    • 468-540 cubic inch
    • B/B up to 850 HP

    Last edited by a moderator: Sep 11, 2015
    87vette81big, Sep 10, 2015 Edit History Delete IP Warn Report
    #152 Like + Quote Reply


  4. 87vette81big solid fixture here in the forum
    Home :: Complete Racing Carbs & Spacers :: Carburetor, Weekend Warrior :: BX4 Billet series Weekend Warrior 750
    http://blp.com/cart/index.php?main_page=index

    Weekend%20Warrior%20billet%201a.jpg

    Carburetor, Weekend Warrior
    Product 2/2




    Weekend%20Warrior%20billet%201a.jpg

    larger image
    BX4 Billet series Weekend Warrior 750
    $849.99
    Add to Cart:

    • Model: 4016-BX4-DL-G-750
    • Shipping Weight: 6lbs
    • Manufactured by: BLP

    BX4 BILLET WEEKEND WARRIOR SERIES CARBURETOR

    ALL NEW! BX4 Billet Weekend Warrior carburetors are designed for the value minded racer who appreciates quality.
    In-House dyno testing has shown outstanding power improvements over previous cast zinc and aluminum models.
    Using only "American Made" 6061 material, these lightweight carburetors provide excellent acceleration and throttle response.

    Features:

    • B Style Stepped Down leg boosters.
    • BLP BX4 Lightweight all billet construction main body.
    • Lightweight Aluminum dual inlet float bowls.
    • BLP Calibrated Billet Metering Blocks.
    • Adjustable Air Bleeds, relocated for increased air flow.
    • BLP adjustable throttle linkage
    • Stainless Steel throttle plate screws
    • BLP Secondary Cam Bracket with adjustable idle screw. Also includes throttle stop lever.
    • BLP Billet Base Plate.

    BLP Racing Products, LLC. Is not responsible for errors with photography, typographical content or pricing and are subject to correction and/or change without notice.


    Last edited by a moderator: Sep 11, 2015
    87vette81big, Sep 10, 2015 Edit History Delete IP Warn Report
    #153 Like + Quote Reply


  5. 87vette81big solid fixture here in the forum
    About BLP
    Building%20photo%202011-small.jpg


    BLP manufactures high quality race engine parts including engine accessory drive components, racing Holley carburetors, gaskets, belt driven fuel pumps and fuel system components. We carry the largest Holley performance carburetor service parts inventory in the industry. BLP also offers special machining services to our customers. Our confidentiality to our customers is paramount with us.
    2010_TOC-_WELCOME-1.jpg


    Commitment to our customers is exemplified by continued expansion to include increasing both floor space and adding modern CNC machining centers. Our in-house engineering staff and Research and Development department enables BLP to remain a leader in the racing industry.

    We are proud of our long-standing status in the industry, our staff, but most of all, in our commitment to service you our customer with high quality racing products.

    mikelaws-handwriting-name.png


    blpdragcar.jpg




    A Brief History of BLP Products, Inc.

    Super-Stock-Front-Page.jpg


    When Jimmy Johnson won NASCAR's top points championship with a record setting 4th year running, his car was equipped with a carburetor manufactured by BLP (Bo Laws Performance) Products of Orlando. BLP Products, Inc. has manufactured high quality race engine parts and components for many of the professional race carburetor builders and NASCAR race teams, along with modifying Holley® race carburetors.
    Bo-Winter-Nationals.jpg


    BLP also manufactures special components for Holley® Carburetors, along with designing and developing drive components, belt-driven fuel pumps, piston dome oilers and sheet metal valve covers. Bo Laws Automotive began in 1965 as a two-man automotive general repair shop. By 1970, the small firm grew to five employees successfully tuning and race prepping Corvettes and muscle cars. From 1971 until 1990, the company operated as a combination speed and machine shop, specializing in building high performance products and race engines. BLP Products, Inc was then founded in 1991 and continues to remain one of the top high performance products manufacturers in the racing industry


    Bo-Winternationals.jpg


    "It was an awesome time in American automotive history and I consider myself very fortunate to have experienced those times," comments founder, Bo Laws. "There were very few racing parts available and we had to design and make many of our own parts." Laws was very successful in drag racing in the late '60s and won several NHRA National Events in the Street Eliminator and Pro Stock divisions. This success helped propel the business and in 1983, Laws was inducted into the first Southeast Division NHRA Hall of Fame.

    bo-working.jpg
Stay with BoLaws !!!
 
Ha Ha Rick.
No I am not using my Bo Laws 1085 cfm Pro Flow carb on the Olds 425.
Its for my TA.

The Bosses street car put down 710 Hp on the Mustang Dyno today.
Just a 4 cylinder single Turbo on E85 fuel.
Boost at 31psi.
Can go to 50 psi.
Surpass Hellcat HP.
 
Equates to over 800 Hp flywheel power minium.
7,000 rpm.
Test tonight again.
Can Rev to 9,400 safely.
Titanium valves used.
 
I looked on Holleys website Grumpy.
Under The Numerical listing

80770-1

It has #72 Primary jets.
#75 Secondary jets
4160 770cfm Vacuum secondary carb.
6.5 power valve.

I am going to buy it
 
403 Olds coming out of my 1963 Grand Prix this weekend.
1965 425 Olds Going in.
Take just 1 day to complete
 
DC Is Dead since I Quit and Left There Grumpy.
You don't even answer Tech there anymore.
I watch daily.

All eyes are on the young kids, the 20-year old with the 1976 Corvette LQ9 6.0 Twin Turbo wishing to Run 8's.
I think he figured out to do it on his own.
Find help at Dragweek and where he is now.

Days of probably or in theory can ended with Hellcats.
Decimated the Corvette world.
Only the best Race Mechanics will prevail .
Money no longer there.
Must know what factory built engines , transmissions and rear diffs are best and own them present as I do.
And be skilled and knowledgable enough to build them for Drag Race use.
Budget of $10,000 cash max into entire car.
Run into deep 10's and blow away the Hellcats.

Also $100k buys you a Z06 that blows up.
Machining metal chips left inside of all 9,000 C7 ZO6 2015's.
 
well that carb looks impressive enough, I just wonder if all the internal passages are clear?
 
well that carb looks impressive enough, I just wonder if all the internal passages are clear?
Your Right Grumpy.
It must be Junk my Bo Laws 1085 .
Even though its Brand New and never mounted to an engine yet.
I ordered it and custom made for me.
Long before I was on DC or here.
 
I never even hinted that there was anything wrong with it ,I just suggested you check it out!
I just generally distrust carbs, or any rather delicate precission device to survive shipping unscathed,or to be flawless and free of defects until I inspect it and I test them out, simply because over the years Ive found all kinds of rather un-expected problems with new out of the box carbs, rangeing from simple things like minor trash from the shipping container finding its way inside the carbs inlet port to bent or loose throttle brackets and disconnected floats, shipping damage is all too common,
Ive repeatedly seen my local UPS guys pitch packages over the gate onto my driveway rather than walk it up to the house ,
and even with pictures of the busted packages lying in the driveway , faxed to the customer service complaint desk, it has done little or nothing to improve survice. I really don,t think they give a $HIT!
the fedex guys drive the big delivery truck up to the house across my lawn, and generally leave stuff leaning against the front door,they ring the doorbell and drive off!
 
Last edited:
Some days Grumpy I hate ever being a part of the Corvette world.
All expect me to kiss thier Azzes.
What for ?
I know more than most.
And I have skilled hands to build and create .
 
I am going to stick to working on my own Grumpy.

Its Obvious You and Rick no longer want me around.

Its time to leave.

I am only interested in Pontiacs , All out Drag Racing, & Beating the Hellcats.

I have my own website I started
I think I should maybe turn it into a Forum.

The Problem is You don't understand they are my Pontiacs.
I am building .
Not you.

Also no one has beaten the Hellcats your way.
Not You Tube proven to me.
 
I have no idea how you came up with that conclusion
Brian said:
"Its Obvious You and Rick no longer want me around."


no I don,t dote on pontiac, but then I just look at value per dollar and ease of parts availability not brands, while you might feel differently I think, most major brand name engines all have potential in a skilled engine builders care!
While I have near zero brand loyalty ,
and have no problem at all working on,most larger American V8 engines..

dodge, caddy, pontiac, buick, ford, olds, and AMC, and chevy engines almost interchangeably ,
If parts for every engine cost the same and were equally easy to access, I would be building more chrysler hemi's and dodge 440 and 500 caddy engines,
But as it is now chevy parts, prices and availability, almost mandate their use ,if your wanting to build serious hp on a limited budget.

and no mater how you want to look at things theres no way you can get nearly the same wide selection of components for the Pontiac V8,especially since Pontiac has not sold a v8 engine in decades
the SBC and BBC engines have parts available,
nor is that likely to change now that PONTIAC is out of business ,

I have never seen any indication that one engine brand, alone is so superior as to make all the others a waste of time to work on.
I do appreciate the info you post, on the site, as its a welcome addition and your obviously an experienced mechanic many of us can learn a few things from.
chevy, may be holding a good chunk of the market , ford and dodge also make some decent products
but any of the major brands can be built to perform well, if you have deep financial pockets
 
Last edited:
Back
Top