Recent content by J-Rides

Quick follow up on this thread... I did replace both stock quadrajets with the Edelbrock 1410 750cfm carb on my 1986 Sea Ray 340 Sundancer with the Mercury 5.7L 260 engines. We took one trip with it at the end of the year and saw a noticeable difference in power and no drop off in fuel economy -...

I actually got the same info from my brother who is an auto mechanic. I always try to use resources well - check with multiple sources and it's nice when they say the same thing. Set 'em and forget 'em is how he said it. But yeah, I don't know why Qjet had that design in their carbs. Thanks -...

I also want to ask, besides the adapter and the carb itself, what else will I need to get to make this all work? Or is this mostly going to be a plug and play type situation. Specifically, do I need a regulator of some kind? Different jets? different spark arrestor (currently have an aftermarket...

By the way, your boat looks amazing!

That's good to know. No matter what, it's all gonna be learning for me - holley or edlebrock. At this point no one has recommended anything else so we'll see. Thanks again for all the help. If I decide to go with one or the other I'll let you know.

Hey thanks for the links and info. Now, I've heard that Edelbrock carbs are way more difficult to work on that Holley carbs. Any truth to that?

Any idea what CFM the originals were? Is an adapter plate needed to bolt on the intake?

Do you know what cfm the stock carbs are by chance?

Good call - I'll check that out.

This is exactly what is happening right now. Hard starts, seems like I’m losing fuel, I just had no idea I’d be losing fuel that way. Gonna have to check that out. Tbh, I’ve toyed with the idea of putting Holley Sniper EFI on these engines anyways. Maybe it’s time :)

No aft cabin, definitely the Express Cruiser. Thanks! It is a great boat!

Hey everyone, I have an '86 340 Express Cruiser with two Merc 260's - that's the 5.7L Chevy Small Block. Each engine has a 4 barrel quadrajet carburetor, from what I understand. I will confirm before I do any tuning on them, but I think that's what came stock on these engines. From my manual it...

That may work... I think I'd prefer to just start over with new units. I wonder about Berryman B12... I've used that but never noticed it "waking up" anything though, besides the engine.

Hey thanks for the suggestion. Do you happen to know, would a 4"-27" work for my boat? Boat's in the marina so I can't measure at the moment. I'm thinking that size would work but idk for sure.

Hey everyone, I need to replace my fuel sending units on the boat in the title. Does anyone have one they would recommend? Are there different styles that work better than others? I've done this project on a different boat before but wasn't totally happy with the product I used so I'd love some...