THRILLSEEKER

I'm currently running 750 Edelbrocks on my SBC strokers. I'm fed up with trying to follow the stupid flow chart and find a combination of springs/metering rods/jets all with different reference #'s, part #'s, colors, jet sizes..ect. .. And thats just to for primary jetting. They make it way harder than it needs to be.

I have zero experience with Holley carbs, would switching to Holleys eliminate a lot of the un necessary confusion that comes with Edelbrock or would I just be trading **** for manure?

sprink58

Get yourself a pair of Holley Double Pumpers and enjoy life.

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I have used these bastards on street cars and trucks, drag cars and boats. I have used most of the others. Other than EFI or Direct Injection...this is the best fuel delivery piece of equipment I have ever used. It's like having 2: 2 barrel carburetors and you have 100% direct control as to when and how far the secondaries open.

As far as tuning...you adjust float levels with the engine running!!! You can screw around with jet sizes if you are into some exotic cam grinds and blowers but I have always had great results right out of the box.

I replaced stock carburetors and used these on the Following: '56 Chevy with 327/350 horse. '70 Chevelle SS 454 LS-6 460 horse, '74 Pontiac Trans Am 455 SD, '77 Z/28 Camaro 355 350 horse, '77 Formula F-18 302 Ford/300 horse, '83 Formula F3 355/325 horse, '68 Z/28 Camaro 406 435 horse, '79 Formula 255 Liberator twin 355 375 horse.

I don't work for Holley...I'm a contractor and Mechanical Engineer by profession.

Now you know what I REALLY THINK!!

Not to get on a rant...but I love these damn things because they give you so much control over the boat. throttle response on my twin 355 Vortecs is instantaneous....no hesitation

Wes Burmark

I had Quadrajets on my last carb boat (built smallblocks). I was able to get great recommendations from the Carburetor Shop in Ontario, CA. They sold me all the small parts that I needed, jets, needles, etc. I am a Holley fan but as my boat had twins I was faced with making a little effort to learn the different carbs and spend $180 bucks on an assortment of parts or buy two new Holleys and have to fiddle with them until they were perfect. Marine Holleys are not inexpensive. I could have spent less money than I did if I would have gone with their recommendation. I had them send one leaner and one richer setup than their standard recommendation. I gained 50 r.p.m.s over their standard recommendation. 1/2 m.p.h? LOL Good luck.

bcfountain

go with a holley.parts are everywhere and a simple design.anybody can work on them and they are relible.

Full Force

iTrader: (5)

I Love the Holleys, always did, the Edelbrock has too much to deal with for tuning, maybe thats because I never used em, but thats what I have heard, out of the box jetting is usually opretty close, set the mixture screws and go! The best part is everyone has gaskets and such for Holley...

Mariah212Z

For a stock to mild motor applications running in the lower RPM ranges 4800 to 5600 the 1409 600cfm and the 1410 750cfm run great right out of the box.

If needed, No need to take the carb off the motor. Just remove the top plate of the carb and all tuning can be done. Metering Rods, jets and step-up springs are straight forward.

Cost is also good if your on a budget.

THRILLSEEKER

UPS dropped off a pair of 4150 750cfm. carbs last night. The stock jetting is 73/81. My motors are 383 Strokers with 234/240, 566/565 Madera cams. Any suggestions on where to start with jetting?

Full Force

iTrader: (5)

I have always started with them out of the box, put timing at 32 total and see what plugs look like, if they lok good add a degreee of timing till plugs start to look lean, most SBC like 34 total, I bet if anything you may only need a tad more jetting, they are set up fairly conservative..

I always tuned mine this way and it seems to be just fine..

sprink58

Good choice...who did you deal with?

The 750 is hard to get wrong and has been said...you should be close out of the box. Run a while and see how you like it ...you may decide not to mess with it. You will love the control you have with those carbs.

f_inscreenname

I've been using Edelbrock marine carbs for years. Very easy to work on. No gaskets below the fuel level. I think one of the issues is you are running 750's on a small block. I run 750's on big blocks and a lot of folks think they are still to big and if putting along they are right. But I don't put much.
I also run a 800 on my 496 stroker.