Indy EZ, talks the talk, walks the walk.

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just out of curiousity.. Are you guys all testing on the 4.5 bore? I noticed someone said they were.
 
My SB fixture is 4" and my BB fixture is 4.5", but I have an insert to make the SB 3.8" and one for the BB that goes down to 4.25"
 
72BBSwinger said:
Do you think opening up the EZ intake ports to max wedge size would help the lower lift flow any?
Click to expand...

Nope, here is that very test. The first column is a stock port and the second is the same port after removing the "hook" at the top of the port opening.

.100".....70......70
.200"....130....132
.300"....186....189
.400"....237....240
.500"....283....288
.600"....313....329
.700"....333....341
 
MRL Performance said:
My SB fixture is 4" and my BB fixture is 4.5", but I have an insert to make the SB 3.8" and one for the BB that goes down to 4.25"
Click to expand...

Thanks. Do you typically use the 4.25 or 4.5? What priorities determine which bore you use?
 
IQ52 said:
Nope, here is that very test. The first column is a stock port and the second is the same port after removing the "hook" at the top of the port opening.

.100".....70......70
.200"....130....132
.300"....186....189
.400"....237....240
.500"....283....288
.600"....313....329
.700"....333....341
Click to expand...

72BBSwinger said:
So have you done "everything" to them yet? Like 2.25 valve and such?
Click to expand...

If you are refering to these flows, this is is with the stock 2.19 valve and the only thing I did was open the port right by the intake manifold opening. Nothing else was touched.

IF you are refering to the 372 cfm, it is with a larger valve, but I would hesitate to say the port was finished. It was my first attempt to get maximum flow from the EZ and the only EZ port I ever worked before checking on the answer to your question about lower lift flows.
 
moper said:
Thanks. Do you typically use the 4.25 or 4.5? What priorities determine which bore you use?
Click to expand...

I will use the smaller bore for the smaller BB bores like Hemi, 383, 454 and the like. Most of the time I will use the 4.50" bore. Its what I got, so thats what I use.
 
IQ52 said:
If you are refering to these flows, this is is with the stock 2.19 valve and the only thing I did was open the port right by the intake manifold opening. Nothing else was touched.

IF you are refering to the 372 cfm, it is with a larger valve, but I would hesitate to say the port was finished. It was my first attempt to get maximum flow from the EZ and the only EZ port I ever worked before checking on the answer to your question about lower lift flows.
Click to expand...

So there is probably quite a bit more potential wouldnt you say? Would the 2.25 intake valave help flow at say .500 lift with say a blended chamber to a 4.375 bore scribe? The reason im asking is I like the idea of the EZ-1 for my A body, stock un raised exhaust ports, but am wondering how much of an advantage do they have over like a Stealth or RPM in the .450 to .650 range.
 
Go with the EZs. I have confused the issue by pushing the RPM and Stealth heads way beyond where they were ever ment to go.
 
First tests of the Indy EZ exhaust.

1st column, Stock EZ no pipe. 2nd column, Stock EZ w/ 2" pipe. 3rd column, ported no pipe. 4th column, ported w/ 2" pipe.

.100".......59......61.......65......67
.200".....103.....109.....123.....133
.300".....135.....148.....157.....177
.400".....165.....185.....198.....230
.500".....189.....217.....223.....268
.600".....205.....239.....237.....290
.700".....212.....254.....247.....308
 
If the 2954 is bolted to a full Max Wedge port, the top of the port will have about 1/8" sealing surface. You can physically open the 2954 to MW, but again, 1/8" sealing at the top of the port and the roof of the port will be 1/8" or less. That is the reason for the Super Victor.
 
IQ52 said:
If the 2954 is bolted to a full Max Wedge port, the top of the port will have about 1/8" sealing surface. You can physically open the 2954 to MW, but again, 1/8" sealing at the top of the port and the roof of the port will be 1/8" or less. That is the reason for the Super Victor.
Click to expand...

So i would have to port the victor intake to mw or can i just slap in on and use bigger gaskets?
 
Well, Ya'll can slap it on and it will seal, but you will have an, um, interesting port mismatch, and no better sealing than if you port it.
 
IQ52 said:
First tests of the Indy EZ exhaust.

1st column, Stock EZ no pipe. 2nd column, Stock EZ w/ 2" pipe. 3rd column, ported no pipe. 4th column, ported w/ 2" pipe.

.100".......59......61.......65......67
.200".....103.....109.....123.....133
.300".....135.....148.....157.....177
.400".....165.....185.....198.....230
.500".....189.....217.....223.....268
.600".....205.....239.....237.....290
.700".....212.....254.....247.....308
Click to expand...

Wow that is some serious exhaust flow for stock location ex. port isnt it?
 
I'm not one to hyjack as thread. But since there are so many head experts on one thread, I have to ask you all a question. I'm building a 68 NSS Dart and I have a 470 Low deck short block for it, I have to ask the experts on which head i should use. The short block has Wiesco flat tops and is zero deck. I wanted to use Stage VI heads since I have a STR-14 with three tops for it. But I can allways look for a STR-15 if i good with a different set of heads. I still need to buy the cam for it so that really won't be a factor on which heads I use. Again I apologize for "butting in on your post" But I had to ask.
 
We used a 2886 std port intake on a MW port head with stellar results, so it can be done.
 
ou812 said:
graph and pics:
Click to expand...

what kind of headers are on the engine being dyno`d in the pic? looks like something I might be interested in for use w/ an aftermarket front suspension (magnum force)
trhanks, bob:
 
SGBARRACUDA said:
I'm not one to hyjack as thread. But since there are so many head experts on one thread, I have to ask you all a question. I'm building a 68 NSS Dart and I have a 470 Low deck short block for it, I have to ask the experts on which head i should use. The short block has Wiesco flat tops and is zero deck. I wanted to use Stage VI heads since I have a STR-14 with three tops for it. But I can allways look for a STR-15 if i good with a different set of heads. I still need to buy the cam for it so that really won't be a factor on which heads I use. Again I apologize for "butting in on your post" But I had to ask.
Click to expand...

Well you can use whatever head you want, any aftermarket aluminum head for the big block Chrysler can be ported into the 800HP range (that should cover NSS). This includes the Stage VI, Stealth, RPM, Victor, EZ. Heck, we've made 700HP with 906 iron heads on a 451 and 9.5:1 compression.

Everybody will have a different idea depending upon their favorites, what parts you already have, the condition of those parts, your goals, your finances. It's just not as simple as, use this "one" it's great. This is hot rodding, there are a thousand permutations and they all can work.

Having said that, the VI will work.
 
famous bob said:
what kind of headers are on the engine being dyno`d in the pic? looks like something I might be interested in for use w/ an aftermarket front suspension (magnum force)
trhanks, bob:
Click to expand...

'Sokay, I'm thinking this is more of a general cylinder head thread.
 
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