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Looking to replace intake manifold. Need advice and confirmation of fit.
Here's what we have now on Elvis:
We have several issues with this setup. Some cosmetic, some operational, some safety.
First the safety issue. When this was installed, the engine was offset to the left side and crooked in the chassis, and the crossover hose at the rear of the left side was hitting the firewall. Now we have a fuel leak there. I'm not entirely sure if it's a seal or a crack in the fittings or a crack in the fuel rail, but tightening the fitting nuts doesn't solve the problem. This is the primary motivation for replacement.
We could just replace that braided hose, but there are other issues.
We've been chasing squealing belts on this one. I've tried just about everything to quiet it down. Tensioners and idlers have been replaced, all of them, most of them replaced twice. A couple of different belt routings have been tried as well. We'd really like to go with the stock "truck" routing, and remove the "DIrty Dingo idler relocation" setup. However, with this low profile "car" intake, the belt would go straight across where the throttle body is now. A new "truck-ish" intake, taller, with the throttle body higher up would allow for that.
While the owner of this one loves the design, and the fact that its all metal, the black just disappears into a big hole in the middle. He'd prefer something shiny and either silvery/chrome in color, or possibly painted to match the (Red!) interior upholstery theme.
The IAC on the throttle body makes horrible noises when you start it cold. I hope that's not "operating as designed," but a new kit would include another throttle body. I hate to tempt fate, but I don't see how it could be any worse than what we have now.
I'm probably forgetting a few other issues.
Our engine is what appears to be a fairly stock LM7 5.3L engine, 862 heads (cathedral ports), iron block, nothing fancy. We have a throttle cable, not DBW throttle. It's backed up with a 4L60E automatic transmission.
In my opinion, sheetmetal short runner intakes on N/A engines are garbage, unless you're only turning 7500-9500 RPM. Those things DESTROY low to midrange torque. No way would I run something because it "looks" good. Here's what I'd use: Edelbrock Pro-Flo XT. It's taller, looks pretty sweet, and could easily be painted red. Better torque production and better quality.
In my opinion, sheetmetal short runner intakes on N/A engines are garbage, unless you're only turning 7500-9500 RPM. Those things DESTROY low to midrange torque. No way would I run something because it "looks" good. Here's what I'd use: Edelbrock Pro-Flo XT. It's taller, looks pretty sweet, and could easily be painted red. Better torque production and better quality.
You get no argument from me. Not sure about the car owner yet. He has complained about a lack of torque at low RPMs. I haven't worried much because 75 year old leaf springs in the back, but we've replaced those with slightly stiffer, new springs and installed the CalTracs traction bars now, so I'm less worried with that. We plan (but don't yet have) a Mopar 8.75" rear axle with 3.7~ to 4.1~ ish gearing and a LSD. Currently running an open diff with unknown gears in what I believe is an ill fitting (too wide) Chevy Astro van axle.
But I'll need the entire package to sell this. What fuel rails would go with that? I think we've got the stock injectors for the LM7 engine, but I'll probably want to verify that. And what throttle body would work with our throttle cable and the Edelbrock manifold. Oh, and I see two Edelbrock manifolds that match your description. 7140 and 7139 are the Edelbrock numbers. What's the difference and which would be best for our application. Ship date on the Edelbrock manifolds is 2-27, and this thing must drive on 1-27, so that one is a little too far out on the time horizon as well.
I guess I could patch together the fuel line with new fittings, unless the rail is cracked. I'll have to look closer at that. It doesn't have to have the new manifold on 1-27, it just needs to not leak and be safe. I'll need to figure out how to fix the leak if we don't go with a full new eBay kit.
7139 can use 3 or 4 bolt TBs, 7140 can use 4 bolt only. Pretty sure Edelbrock sells their own rails to fit that. But if the intakes aren't available, that's a moot point. It appears you can fit ANY height intake on that thing, so if that's the case, my next choice would be a Holley Hi-Ram. Anything with longer runners is going to be better than what's on there. If it were me, I'd go with a Trailblazer SS intake, but I understand this guy wants looks, too. The Holley is a pretty trick looking piece that should fit the bill there.
Critical is fixing the leak by 1-28. The most annoying part of the belt squeek right now (without the AC compressor running) is the tensioner, which I've got a replacement on the way.
I could certainly try just a replacement fuel hose for now and get the Edelbrock on the way. It's definitely leaking from where the two hex sections are right at the braided stainless hose side of that 90° elbow. That could be the only leak, I'm just not certain. If it is, then getting a hose assembly that's made right, and would transfer to the Edelbrock setup when it's available might be an option.
It appears you can fit ANY height intake on that thing, so if that's the case,
I think my limit is about 22" high before I get close to the hood in this one. So basically almost anything.
Is there a complete "kit" for the Edelbrock that includes throttle body, fuel rails, connecting hoses/pipes, everything that's in the fleaBay one? Or a parts list that I can make a quote and/or "wishlist" from?
Is there a complete "kit" for the Edelbrock that includes throttle body, fuel rails, connecting hoses/pipes, everything that's in the fleaBay one? Or a parts list that I can make a quote and/or "wishlist" from?
Answering my own question, the Edelbrock 7139/7140 manifolds appear to use Edelbrock 3629 fuel rails.
And it appears I'd need a 90mm throttle body to match that manifold as well. I haven't found a part number or price for that yet.
The upside to all that is better torque from 1500 RPMs up to 4500 RPMs, where the current manifold is weaker.
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Looking to replace intake manifold. Need advice and confirmation of fit. 
