Edelbrock Carb on a Z24

[85 720]

Has anyone installed these carbs on the Z24 720s?

http://www.jcwhitney.com/performer-seri ... 150y1985j1#

It claims to be a direct bolt on and a direct replacement for the Hitachi ones found in the Z24 engines.

Anyways, has anyone tried to do this? Why or why not?

If you don't agree with this carb, what carb would you recommend for a 4x4 720 used in dirt roads. Also, it has to be fuel economic. I would like to see 25ish from my truck.

[86 720]

Interesting.... Would like to see the responses...

All I've really heard about is the Weber carb. change. Using the stock Hitachi, I get 28 city driving, and 26 city driving with A/C running full blast!

Nice that it only takes $21 to fill the tank and it lasts me two week!

[PEZi]

always assumed they only made stuff for V8 american made stuff. AKA.... never knew they had anything that was 2 barrel... thought they were all 4 barrel

[synack7350]

yeah for a couple bucks more you could get a 32/36 weber its supposed to be better on gas than the hitachi. I just put one on but haven't done any mpg comparisons yet.

[MetalFab]

LOL I'm lucky to see over 15mpg on the hitachi.. that settles it. I've never purchased anything from jc whitney, and never seen an edelbrock in anything but the large pattern 4v setups. I just don't trust a website that generalizes parts as much as that, having hundreds of carbs with the same picture? I know it's a lot of website maint but it just sounds like shipping hell when you know you're likely to get the wrong part. Stick with a weber, it's tried, trusted, proven.

[85 720]

always assumed they only made stuff for V8 american made stuff. AKA.... never knew they had anything that was 2 barrel... thought they were all 4 barrel

Hahaha I was the same way with Holley, but apparently, they do make stuff for the foreigners. I guess pretty soon I'll be seeing Nismo rims on a Camaro (sarcasm so you guys know)

LOL I'm lucky to see over 15mpg on the hitachi.. that settles it. I've never purchased anything from jc whitney, and never seen an edelbrock in anything but the large pattern 4v setups. I just don't trust a website that generalizes parts as much as that, having hundreds of carbs with the same picture? I know it's a lot of website maint but it just sounds like shipping hell when you know you're likely to get the wrong part. Stick with a weber, it's tried, trusted, proven.

Ding ding ding. That's why I want to ditch the Hitachi carb. Its to the point where I have contemplated getting a 350 SBC and throwing it in there. That's how bad my mileage is. I've depleted most of my gas tank on a 4 hour drive doing 60.

A lot of people have actually recommended JC Whitney to me. I've never bought anything from them so I can't say if what they have is true.

But back on topic (about the carbs), the issue really is that I need a reliable carb that will get me 25MPG. It's really ridiculous that my I6 4.0 Jeep gets 23MPG HWY and the I4 2.4 is getting 13/15 ish HWY.

Also, I DON'T have to worry about emissions BUT I do plan on keeping this engine as I have already tuned it up and even done the timing chain. So I would love for whatever carb I get to not mess up the engine in the long term. I've been reading online about the Weber carb and it seems that it has to be adapted to the engine and some hoses may be rendered useless after the installation. That's the main reason I am interested in this Edelbrock. That and that it's not considered a "Racing carb" as the Weber is. I've also been looking on here and it seem many people are still getting low MPG's with the Weber. IIRC, Pezi stated in one thread that he got 19MPG with the weber.

So while the Weber is proven to work, I still need a reliable, fuel economic, truck that can take a beating as this truck sees on road and off road duty.

[synack7350]

pezi runs a 38/38 syncro of course he's going to see bad fuel economy his set up is for racing. the 32/36 is progressive. Just about everyone on here runs syncros for power. I'm not sure but I think I'm the only one who installed one for fuel economy as my hitachi was crap too. as far as the vac delete, thats choice it has all the ports for egr and other emissions what nots, just most of us choose to delete them. (less lines, less likely vac leaks will occur).

[MetalFab]

You'd have way more balls with the 4.0 at that, shame there isn't enough engine space.. On the subject of MPG's, Pezi isn't running the 32/36 like most people go to for pep/mpg, he's running the 38(I'm almost certain) and hell, that'd still be a significant increase at 4-5 mpg's, but he's racing his truck. Yes weber needs an adapter, but it comes with the kit if you order from somewhere like webercarbsdirect.com. you're already ruling out a bundle of wires by going with any aftermarket carburetor, and you don't have to worry about emissions, so a vac line delete shouldn't be too far out of the question with this install. Keep the dizzy line, and put SNUG caps on everything else. Costs only a few bucks!

Also mpg's are affected largely by the user; right foot imput, vehicle layout, and how well it's tuned. I'm sure pezi has his rig dialed in to pull those numbers with the carb he has. 4x4's will see lower mpg's for multiple reasons, tire size, component drag, vehicle weight.

i've been convinced from what I've seen on the forums and elsewhere over the last few years and hope soon to have a new weber of my own. Let us know if you go with the edelbrock and post a build up! There aren't many options for these trucks, and not many are willing to spend $$$ on the unknown.

[85 720]

pezi runs a 38/38 syncro of course he's going to see bad fuel economy his set up is for racing. the 32/36 is progressive. Just about everyone on here runs syncros for power. I'm not sure but I think I'm the only one who installed one for fuel economy as my hitachi was crap too. as far as the vac delete, thats choice it has all the ports for egr and other emissions what nots, just most of us choose to delete them. (less lines, less likely vac leaks will occur).

Ohhh well that explains it. Would be nice to have a carb MPG thread here to make things easier for those of us considering the Weber(s).

Well it's nice to know that I'm not FORCED to delete my emissions stuff. I thought it was mandatory or else the carb fails.

So how's your fuel mileage with the 32/36 Weber?

You'd have way more balls with the 4.0 at that, shame there isn't enough engine space.. On the subject of MPG's, Pezi isn't running the 32/36 like most people go to for pep/mpg, he's running the 38(I'm almost certain) and hell, that'd still be a significant increase at 4-5 mpg's, but he's racing his truck. Yes weber needs an adapter, but it comes with the kit if you order from somewhere like webercarbsdirect.com. you're already ruling out a bundle of wires by going with any aftermarket carburetor, and you don't have to worry about emissions, so a vac line delete shouldn't be too far out of the question with this install. Keep the dizzy line, and put SNUG caps on everything else. Costs only a few bucks!

Also mpg's are affected largely by the user; right foot imput, vehicle layout, and how well it's tuned. I'm sure pezi has his rig dialed in to pull those numbers with the carb he has. 4x4's will see lower mpg's for multiple reasons, tire size, component drag, vehicle weight.

i've been convinced from what I've seen on the forums and elsewhere over the last few years and hope soon to have a new weber of my own. Let us know if you go with the edelbrock and post a build up! There aren't many options for these trucks, and not many are willing to spend $$$ on the unknown.

Yeahhh, otherwise, I'd get another 4.0. They're really easy to get in my area. I've thought about dropping a GM Ecotec crate engine in there as well. The 2.2 found in the Cobalt. I've heard of many people retrofitting carbs on the Ecotec. I could probably get about the same MPG as the jeep and the power of a 90's truck with it. But I guess I just dream at the moment. I have too much $$$ in the Z24 already. Maybe if I got another 720.

Yeah, I know the whole MPG ordeal. I always get more than what others get in the cars I have because I'm not pedal happy. The 720 seems to be an exception. As of right now, the 720 is fully stock except for the interior. I did a heavy duty carpet, JVC head unit with JL Audio amp and 2 seperate boxes in place of the back seats (since they can't stay down for some reason, I took em out. Seats are the top of the box.), and 2 5 1/2 Pioneers in the back. Sound like tweeters but that was the whole reason of my amped back speakers. Other than that, I'm running everything else stock. Still have the original (and messed up) 15 inch steel rims, with 205/75(IIRC) tires.

[flinterman2000]

As far as milage is concerned. With the stock hitachi I had in my Z20 powered galant, I got 23 MPG city and 28 HiWay. With the change to the 32/36, it went to 28 city and depending on my driving style 30 - 32 HiWay. After the installation of the turbo it went all out the door as I just loved the whine of the turbine and used a lot more pedal than necessary most of the time but I averaged 28 all round.

[PEZi]

Also mpg's are affected largely by the user; right foot imput, vehicle layout, and how well it's tuned. I'm sure pezi has his rig dialed in to pull those numbers with the carb he has. 4x4's will see lower mpg's for multiple reasons, tire size, component drag, vehicle weight.

yeah... about that

I used to get roughly 19MPG with the 38DGES. That's with both barrels always open, no progressive stuff. I've been working on it all winter thus far, so I don't know what my new numbers are yet, but come spring time when it comes off the jackstands, it will be 200lbs lighter, and have more timing and spark etc.

I'm expecting 15 city 18 highway out of a 2,000lb vehicle. Translate that to a normal size and weight truck and its more like 12/15. This is of course an aggressive setup though.

[MetalFab]

Yeah my 4x4 weighs in at 3600 lbs flatbed and all, and I know with the 31s and the bent front end I'm just adding more drag. Heck, just pushing power through the xfercase gears will drop numbers. I drive roughly 90-100 miles round trip daily and use 6-7 gallons depending on pedal input. So I figure between 12-16 mpg with the stock(I f#&*^^g swear the carb is un-tuneable, I've yet to twist the screws all the way out but I'm certain they've been fixed at factory settings)

I'll keep away from the 38 myself, as I might as well do my v8 swap now and get it over with if I'm going to get worse mpg than I currently have. I've one week to wait until I can order the 32/36 and I'll post up results. Even a 5mpg increase and the carb will end up paying for itself in little over 2 months of commuting. I'd love alittle extra power as well, and would save mpg just by being able to maintain hwy speeds with less throttle.

Mmm.. I know Visiotech has a few turbo's kickin around, after experiencing what one did to his stock acura I totally understand where you're coming from flinterman. Might be a very viable solution to lack of power and piss poor mpg's to put some boost to her.

[synack7350]

let me know how your mixture works out I'm thinking i'm going to have to rejet mine as i'm about 3 turns out on the mixture screw to keep it idling. though I wanna confirm timing, and cylinder pressure first (please be good, please) .

[kris127]

JEGS.COM is also make import parts but i am getting ready to put a webber on my 84