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6.1 Intake vs Edelbrock Clone: Any Real Data?
Posted By: moparmitch
6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/16/17 07:17 PM
Hello All,
We know these two intakes are similar, but not duplicates...
With that said, does anybody have anything to report concerning quality, performance, etc?
Posted By: fbs63
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/16/17 08:36 PM
From what I have seen on other forums the Edelbrock manifold is as good as a ported 6.1 manifold.
Posted By: sixpackgut
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/17/17 06:42 AM
Somewhere i have 6.1 intake flow numbers while bolted to a thitek head. A ported stock intake flows extremely well and probably hard to beat.
What Edelbrock should have done was make the intake with 7-8" runners instead of making the same basic intake as a stock 6.1.
But if you have or want to go buy a new stock 6.1 intake than the edelbrock is cheaper
Posted By: moparmitch
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/17/17 12:54 PM
A new edelbrock is cheaper than a used 6.1?
Wow, summit lists the e-brock at $800, which seems crazy...
So, in ported form the e-brock will at least be the same or better than a ported 6.1?
How does the stock 6.4 intake compare to these manifolds if we had it locked open for upper rpm performance?
Posted By: sixpackgut
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/17/17 03:32 PM
They use either the 5.7 or 6.4 plastic intake in the trans am cars so Im willing to bet the work good too but I really dont know.
A new stock 6.1 intake has gone way up in price
Posted By: HotRodDave
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/17/17 08:22 PM
I did some reading on guys who have compared the 6.1 and 6.4 intake and the 6.4 made more HP than a stock 6.1 pretty much all the time and was real close to a ported 6.1, everyone was belly aching they couldn't port the 6.4 because its plastic. I would bet that with compression maximized for the plastic ones superior heat insulating properties the 6.4 would make more HP than even a ported 6.1 but if compression is not optimized and just straight up swap the ported 6.1 still wins. It also seems the 5.7 eagle truck intake was righ there in the mix and maybe even a hair better than the 6.4 but because of the hood clearance issue was not practical for a lot of cars. There is a lot of info on the internet machine if you can wade through the guys thinking a hellcat hood turns their R/T into a hellcat.
Posted By: ric3xrt
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/17/17 09:15 PM
the Eagle passenger/jeep is a good intake for NA
Posted By: moparmitch
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/18/17 01:45 AM
Good stuff guys...
This is helping to confirm my decision to get a used 6.4 or 5.7 vvt motor (preferably 6.4) for my project. If I can figure out how to post pictures on here, maybe I'll sport some pictures to look at and get something new going on the G3 forum. Things seem to be a little slow here - lol
So, for newer oem intakes, they seem to be pretty good performers.
Is the 5.7 truck intake taller than a 6.4 challenger intake?
Is a jeep intake different from a truck intake?
I haven't decided yet, but here's what I'm considering right now:
1) 6.4 motor to run as is with the mopar crate engine kit electronics
2) 6.4 with locked cam phaser, dragpack style intake and carb, MSD or FAST ignition
The car is light right now (1560 lbs without motor,trans,fuel system, wiring). I'm hoping it's around 2500ish lbs when its completed, we'll see...
Posted By: WO23Coronet
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/18/17 05:56 AM
5.7 truck is taller than 6.4 car intake. Jeeps use car intakes. Either iteration of your 6.4 would make a 2500 lb car flat out dangle
Posted By: gremlinsteve
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/21/17 07:48 AM
Well
I have not had a edelbrock intake in my hands yet
But I know that more than a few have
I see about 1k to get that intake That's the purchase of it
Along with there required fuel rails
For a lot less money you could port the stock 6.1 intake and be ahead of it
If your starting from scratch then I guess you might be able to justify
The edelbrocks purchase
Posted By: moparmitch
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/21/17 12:50 PM
Good point, I did not know that edelbrock specific fuel rails were needed...
I'm kind of favoring a ritter/carb setup just to keep things simple and reliable, but I would certainly like the shorter height of the FI manifold.
Call me crazy, as I would like a flat hood on my car.
Posted By: gremlinsteve
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/21/17 02:45 PM
I'm currently working on a sheet aluminum intake idea
Which will be a shorter runner in say the 5-6 inch area
We hope that the intake is no taller than a standard 6.1 style
Intake so there won't be fitment issues
The first design will be boasting an internal intercooler for
Cintrifical blower cars that have no or little room for a standard intercooler
Posted By: GoForBroke
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/22/17 02:42 AM
I spoke with the guy who designed the new head and he basically told me it's designed to be modified. Ported and played with hence the reason they added material around the runners so we could make em how we liked them is what he stated. Ribs on top of the combustion chamber, extra thick deck, and mainly designed with boosted guys in mind.
As for the intake he stated the same. It needs porting and they left the whole plenum bottom removable for easy access. They also added the bosses for direct port nitrous. The injectors actually point at a right angle to airflow which is why I believe they make you use their rails. A mistake in my opinion but I think it has potential.
The issue I see with the 6.4 intake is there are fuel trim offsets for certain cylinders in the factory tunes on the vehicles that use them. That tells me airflow distribution must be off on one side.
You can also make a simple setup with a MSD window switch and activate the built in SRV (short runner valve) and make some decent gains up top while keeping things torquey down low with the 6.4 intake.
Posted By: WO23Coronet
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/22/17 06:34 AM
I spoke with the guy who designed the new head and he basically told me it's designed to be modified. Ported and played with hence the reason they added material around the runners so we could make em how we liked them is what he stated. Ribs on top of the combustion chamber, extra thick deck, and mainly designed with boosted guys in mind.
As for the intake he stated the same. It needs porting and they left the whole plenum bottom removable for easy access. They also added the bosses for direct port nitrous. The injectors actually point at a right angle to airflow which is why I believe they make you use their rails. A mistake in my opinion but I think it has potential.
The issue I see with the 6.4 intake is there are fuel trim offsets for certain cylinders in the factory tunes on the vehicles that use them. That tells me airflow distribution must be off on one side.
I think the 90 degree neck on the 6.4 intake causes flow distribution issues, apparently it gets really bad with boost
You can also make a simple setup with a MSD window switch and activate the built in SRV (short runner valve) and make some decent gains up top while keeping things torquey down low with the 6.4 intake.
Posted By: moparmitch
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/22/17 12:48 PM
It seems as though the angled plenum entry on the 6.4 intake might cause some issues, but I haven't seen any data to support it. The fuel trims needed may be related...
Are the fuel trims needed more so on the MDS cylinders?
Posted By: GoForBroke
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/22/17 03:50 PM
They are all on the odd cylinders and the offset starts at 4000 rpm and goes up a tad as rpm increases on cylinder 1 but not on 3,5,7. The offset is gradually reduced as you move toward #7. I think your right about the angled entry which forces the high speed air right into cylinder #1 runner opening. Once I figure out how to post pics I can post a screen shot.
If this theory is correct someone could run into trouble if using this intake for boost on an engine without individual cyl fuel trims by running the odd bank a bit lean especially cyl 1 .
The 5.7 guys make nice gains when setting the SRV up to work. Here's a link to some before and after dyno runs with using it on a 5.7. Each graph has a handwritten note on what the graph represents
http://www.chargerforums.com/forums/attachment.php?attachmentid=115257&d=1395506320http://www.chargerforums.com/forums/attachment.php?attachmentid=115249&d=1395506312http://www.chargerforums.com/forums/attachment.php?attachmentid=115241&d=1395506305
Posted By: HotRodDave
Re: 6.1 Intake vs Edelbrock Clone: Any Real Data? - 11/22/17 07:52 PM
Some of it may be exhaust related also... just throwing that out there.