Holley Confusion

[Creedmoor]

It’s easy to tell if the shafts are leaking air, they either are and causing a problem or they’re not. With the engine running grab the primary throttle linkage and wiggle it hard while keeping it in contact with the idle stop screw. If the rpm changes the shaft is leaking. Holley sells bushing kits to fix that. For your engine a 600 classic 1850 vs will be a perfect driver carb. Classic has no adjustable air bleeds or emulsion or anything else, Just jets. Forget the slayer and brawler they are borrowed from the quick fuel line and for your application not necessary. The street warrior is a similar carb to the classic 1850 but is in a shiny modern finish. If I were in your position I’d use a 3310 750vs with electric choke. My 318 ran killer with that carb. You’ll have to tune whatever carb you put on there so pick one that you’re comfortable with.

Thank you! THAT’S the information I was asking for. You have provided the info to eliminate two of the four I was specifically asking about.

Am I correct in thinking the Classic has center hung floats? The Warrior looks a lot like my 1850 which has the side hung floats.

Thanks again.

 

[Creedmoor]

Make sure the baseplate to intake is sealing properly.....square to spread.

https://www.edelbrock.com/square-bo...VwySfM2rVppmLU0xSRvI-cNG2wxLoY9UEguog9TL1oBGu

Exactly what’s on there now.

 

[Creedmoor]

Then buy a new 600.

Always been the plan.

 

[RustyRatRod]

Always been the plan.

Then you need us why? lol

 

[Newbomb Turk]

Thank you! THAT’S the information I was asking for. You have provided the info to eliminate two of the four I was specifically asking about.

Am I correct in thinking the Classic has center hung floats? The Warrior looks a lot like my 1850 which has the side hung floats.

Thanks again.

The 1850 always has side hung floats. Not a thing wrong with those.

 

[TT5.9mag]

Thank you! THAT’S the information I was asking for. You have provided the info to eliminate two of the four I was specifically asking about.

Am I correct in thinking the Classic has center hung floats? The Warrior looks a lot like my 1850 which has the side hung floats.

Thanks again.

See post 30

 

[Creedmoor]

Then you need us why? lol

Third time: which of the four 600’s do you recommend?

 

[Creedmoor]

See post 30

Got it. I think what was confusing me is the classic has dual inlets and the warrior does not.

 

[RustyRatRod]

Third time: which of the four 600’s do you recommend?

I like the good old tried and true 1850. Simple and they WORK.

 

[RustyRatRod]

I like the good old tried and true 1850. Simple and they WORK.

This said, I wouldn't use the old Holley variant. They're not very tuneable. I'd use this.

https://www.holley.com/products/fuel_systems/carburetors/street/parts/SL-1957E

They have MUCH greater tuneability.

 

[72bluNblu]

What do you think is causing the wear? Dirty driving environment? I know I’ve seen them worn out but some guys run enough return spring that at a cruise your leg starts to throb because the pedal is pushing back on your foot so hard.

Come to think of it, I don’t think I’ve ever seen worn throttle shafts with billet base plates. The few I’ve seen were zinc or whatever materiel Holley used back in the day. They were pretty soft.

All of the above. Dirt, soft carb body material, heavy springs could accelerate that depending on the set up. Ultimately, it's a metal on metal interface with two dissimilar metals that doesn't get lubricated and isn't sealed or supported by bearings. If you drive enough, it will wear out eventually.

Which is not to say it's common, because it's not really common to drive enough to wear the thing out. But if it's an old carb, it's a legitimate concern.

The same reason every shaft wears prematurely, lack of lubrication and crud.

Exactly. And time.

 

[TT5.9mag]

Got it. I think what was confusing me is the classic has dual inlets and the warrior does not.

They both have a single fuel inlet, side hung floats, and are classic 1850 style carburetors.

 

[Creedmoor]

They both have a single fuel inlet, side hung floats, and are classic 1850 style carburetors.

From Holley’s own web site

HOLLEY CLASSIC CARBURETOR - FACTORY REFURBISHED​

PART # FR-80458SA

Features:​

• Vibratory polished aluminum for good looks, weight savings and long lasting shine
• Performance upgrade for stock to mildly modified vehicles
• Universal calibration for easy bolt-on performance
• Factory preset electric choke for easy startups
• Vacuum secondaries for use on wide variety of vehicles. Compensate for all vehicle weights, gearing & transmissions to allow smooth opening of secondaries.
• Dual feed fuel inlets for constant high volume fuel delivery
• Compatible with GM, Chrysler, and Ford A/T kickdown linkage. Additional parts may be required.
• Power valve blow-out protection
• Clear fuel level sight glasses
• 100% wet-flow tested by Holley technicians to assure it arrives ready to run!