New Edelbrock heads flow specs
#1
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New Edelbrock heads flow specs
Hey guys,
For anyone interested one of my customers bought a set of the new Edelbrock heads. Just for my own curiosity I decided to have them flowed. Keep in mind that flow benches all vary a little bit but I feel that the guy who did mine is usually pretty darn accurate. He did them just the way they are out of the box.
For anyone interested one of my customers bought a set of the new Edelbrock heads. Just for my own curiosity I decided to have them flowed. Keep in mind that flow benches all vary a little bit but I feel that the guy who did mine is usually pretty darn accurate. He did them just the way they are out of the box.
Last edited by BillK; August 26th, 2022 at 11:42 AM.
#3
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The engine that this set is going on is really going to be restricted by the exhaust system so I am not going to fool with them. I think when its done and on the dyno I might try to round up a set of headers to try and see how much different they are from the exhaust manifolds that are going to be used.
#4
The one thing he mentioned was the fact that it was still getting better at .700 lift. I asked him to go to .600 because the cam is around .540" In my opinion the exhaust port is terrible but for some reason the Edlebrock instructions say not to touch them ?? They have about a .060" step at the very end of the port that looks like it cant do any good.
The engine that this set is going on is really going to be restricted by the exhaust system so I am not going to fool with them. I think when its done and on the dyno I might try to round up a set of headers to try and see how much different they are from the exhaust manifolds that are going to be used.
The engine that this set is going on is really going to be restricted by the exhaust system so I am not going to fool with them. I think when its done and on the dyno I might try to round up a set of headers to try and see how much different they are from the exhaust manifolds that are going to be used.
#5
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Location: Beautiful Southern Maryland
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#7
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Join Date: Aug 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 1,719
Hey guys,
For anyone interested one of my customers bought a set of the new Edelbrock heads. Just for my own curiosity I decided to have them flowed. Keep in mind that flow benches all vary a little bit but I feel that the guy who did mine is usually pretty darn accurate. He did them just the way they are out of the box.
For anyone interested one of my customers bought a set of the new Edelbrock heads. Just for my own curiosity I decided to have them flowed. Keep in mind that flow benches all vary a little bit but I feel that the guy who did mine is usually pretty darn accurate. He did them just the way they are out of the box.
#9
Who gives a shyt about your Chevy stuff anyway. You don’t like them, then don’t buy them. Better yet, go away.
Last edited by cutlassefi; August 26th, 2022 at 05:07 PM.
#10
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Join Date: Aug 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 1,719
It really doesn't matter who produces a part, it just seems strange a a head cast in 1967 for a small block for heavens sake could be so much better than a 2022 Aftermarket head. It just seems they could do much better.
Some pictures for your viewing pleasure........
Last edited by VORTECPRO; August 26th, 2022 at 06:51 PM.
#14
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Location: Colorado Springs Colorado/Thousand Oaks Ca
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Apples and Oranges. This one has been heavily ported head, the other not. How to kill any forum? See below.
VORTECPRO Queen of the Impertinence.and irrelevant
VORTECPRO Queen of the Impertinence.and irrelevant
#15
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Join Date: Aug 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 1,719
#16
Baby Boomers have mostly retired or dead. We are the one who know how to make things work. It will get worse before it gets better. .
#19
They have fewer workers, who know what they are doing. Quality has gone downhill. Eh.
I forgot.US, Canada and England. Are separated by a common language.
Stage 2 batten olds head flow numbers
2.19" intake valve - 1.680" exhaust valve
as received valve job
with a "clean-up" bowl port only.
Lift ..... int ..... exh. (no tube)
.100 .... 75.8 ..., 69.8
.200 ....142.4 ... 117.9
.300 ....207.1 ... 158.0
.400 ....255.7 ... 180.7
.500 ....286.1 ... 193.8
.600 ....315.0 ... 202.2
.700 ....331.6 ... 206.5
.750 ....338.7 ... 209.6
I forgot.US, Canada and England. Are separated by a common language.
Stage 2 batten olds head flow numbers
2.19" intake valve - 1.680" exhaust valve
as received valve job
with a "clean-up" bowl port only.
Lift ..... int ..... exh. (no tube)
.100 .... 75.8 ..., 69.8
.200 ....142.4 ... 117.9
.300 ....207.1 ... 158.0
.400 ....255.7 ... 180.7
.500 ....286.1 ... 193.8
.600 ....315.0 ... 202.2
.700 ....331.6 ... 206.5
.750 ....338.7 ... 209.6
Last edited by HighwayStar 442; August 26th, 2022 at 08:36 PM.
#23
The one thing he mentioned was the fact that it was still getting better at .700 lift. I asked him to go to .600 because the cam is around .540" In my opinion the exhaust port is terrible but for some reason the Edlebrock instructions say not to touch them ?? They have about a .060" step at the very end of the port that looks like it cant do any good.
The engine that this set is going on is really going to be restricted by the exhaust system so I am not going to fool with them. I think when its done and on the dyno I might try to round up a set of headers to try and see how much different they are from the exhaust manifolds that are going to be used.
The engine that this set is going on is really going to be restricted by the exhaust system so I am not going to fool with them. I think when its done and on the dyno I might try to round up a set of headers to try and see how much different they are from the exhaust manifolds that are going to be used.
#24
Jesus people, this site is getting worse and worse.
They tell you not to open up the exhaust because you’d have to take it out on the floor, the roof is pretty much as high as it’ll go. And taking it out on the floor will reduce flow, period.
Secondly, and I’ve already told Bill this, but I’ve had these flowed on two other benches, as well as Edelbrock giving me numbers almost 2 years ago. ALL, I repeat ALL showed about 5% more flow that what Bills guy found. Not saying he’s wrong, just conservative.
And I’ve already made 514/571 with this head, so theyll be fine for most applications. No I’m not posting Dyno sheets, and the owner isn’t going to race it. So you can believe it not, I really don’t care.
They tell you not to open up the exhaust because you’d have to take it out on the floor, the roof is pretty much as high as it’ll go. And taking it out on the floor will reduce flow, period.
Secondly, and I’ve already told Bill this, but I’ve had these flowed on two other benches, as well as Edelbrock giving me numbers almost 2 years ago. ALL, I repeat ALL showed about 5% more flow that what Bills guy found. Not saying he’s wrong, just conservative.
And I’ve already made 514/571 with this head, so theyll be fine for most applications. No I’m not posting Dyno sheets, and the owner isn’t going to race it. So you can believe it not, I really don’t care.
#25
It really doesn't matter who produces a part, it just seems strange a a head cast in 1967 for a small block for heavens sake could be so much better than a 2022 Aftermarket head. It just seems they could do much better.
That because Edelbrock didn't design them, Cutassefi did !
That because Edelbrock didn't design them, Cutassefi did !
#26
Edelbrock did design the big block head. The engineer on the project at the time was a guy by the name of Matt Gamble, he’s no longer there as he didn’t make the move, he’s at Gale Banks now.
And for the last time, they’re not going to change the port location.
And for the last time, they’re not going to change the port location.
Last edited by cutlassefi; August 27th, 2022 at 06:39 AM.
#27
Okay spill the beans why are you always busting on cutlassefi Mark? Just what has he done that bothers you so much? I don't always agree with him but that doesn't mean I don't appreciate what he tries to do for some on the site. What are you doing as a few have told me to set the world on fire?
#28
These are at roughly .75 so flow wise they are ok, even though the port looks a little crude.
With the technology of today, we need a fully CNC'd version.
#30
And just an fyi for all. Edelbrock is very aware of all of this. Even the average guy can go in and clean up some of this, do a more performance valve job, and pick up a few more cfm/hp. That discussion occurred more than once.
Bottom line is, you don’t like em, don’t buy em.
Buy the Speedmasters and do a bunch more work to those just to get em to this point. The feedback has been very positive elsewhere, just not on here, ROP jr.
Last edited by cutlassefi; August 27th, 2022 at 07:47 AM.
#31
#32
Okay spill the beans why are you always busting on cutlassefi Mark? Just what has he done that bothers you so much? I don't always agree with him but that doesn't mean I don't appreciate what he tries to do for some on the site. What are you doing as a few have told me to set the world on fire?
Bill K posted flow numbers for the New Edelbrock heads and it just so happen that they are not flattering. This is not Marks fault nor does it mean the heads will not perform better than the currant out of the box cylinder heads. For the typical Oldsmobile enthusiast these heads will be fine out of the box. Lets see what these head are capable of in the hands of the likes off Bill T before we pass judgment on Edelbrocks latest Oldsmobile offering.
Mark Cutlassefi relax you don't have to defend every post to the death regarding products you helped bring to the market.
Last edited by Bernhard; August 27th, 2022 at 01:37 PM.
#33
no one is busting on mark cutlassefi!
Bill k posted flow numbers for the new edelbrock heads and it just so happen that they are not faltering. This is not marks fault nor does it mean the heads will not perform better than the currant out of the box cylinder heads. For the typical oldsmobile enthusiast these heads will be fine out of the box. Lets see what these head are capable of in the hands of the likes off bill t before we pass judgment on edelbrocks latest oldsmobile offering.
Mark cutlassefi relax you don't have to defend every post to the death regarding products you helped bring to the market.
Bill k posted flow numbers for the new edelbrock heads and it just so happen that they are not faltering. This is not marks fault nor does it mean the heads will not perform better than the currant out of the box cylinder heads. For the typical oldsmobile enthusiast these heads will be fine out of the box. Lets see what these head are capable of in the hands of the likes off bill t before we pass judgment on edelbrocks latest oldsmobile offering.
Mark cutlassefi relax you don't have to defend every post to the death regarding products you helped bring to the market.
#34
Registered User
Join Date: Aug 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 1,719
Jesus people, this site is getting worse and worse.
They tell you not to open up the exhaust because you’d have to take it out on the floor, the roof is pretty much as high as it’ll go. And taking it out on the floor will reduce flow, period.
Secondly, and I’ve already told Bill this, but I’ve had these flowed on two other benches, as well as Edelbrock giving me numbers almost 2 years ago. ALL, I repeat ALL showed about 5% more flow that what Bills guy found. Not saying he’s wrong, just conservative.
And I’ve already made 514/571 with this head, so theyll be fine for most applications. No I’m not posting Dyno sheets, and the owner isn’t going to race it. So you can believe it not, I really don’t care.
They tell you not to open up the exhaust because you’d have to take it out on the floor, the roof is pretty much as high as it’ll go. And taking it out on the floor will reduce flow, period.
Secondly, and I’ve already told Bill this, but I’ve had these flowed on two other benches, as well as Edelbrock giving me numbers almost 2 years ago. ALL, I repeat ALL showed about 5% more flow that what Bills guy found. Not saying he’s wrong, just conservative.
And I’ve already made 514/571 with this head, so theyll be fine for most applications. No I’m not posting Dyno sheets, and the owner isn’t going to race it. So you can believe it not, I really don’t care.
You can't post dyno sheets with supporting data, (but you like to ask others for them) because they will be picked apart. Here's my math:
246.7 CFM @ .500 lift, you will need atleast .580 to see .500 lift @ the valve. Simply those heads will not make 500 HP on my dyno with a 220s @ .050 cam, the low lift flow is deficient. Bottom line is: just port the heads, theres no place but up at that point.
Last edited by VORTECPRO; August 27th, 2022 at 11:25 AM.
#36
You can't post dyno sheets with supporting data, (but you like to ask others for them) because they will be picked apart. Here's my math:
246.7 CFM @ .500 lift, you will need atleast .580 to see .500 lift @ the valve. Simply those heads will not make 500 HP on my dyno with a 220s @ .050 cam, the low lift flow is deficient. Bottom line is: just port the heads, theres no place but up at that point.
246.7 CFM @ .500 lift, you will need atleast .580 to see .500 lift @ the valve. Simply those heads will not make 500 HP on my dyno with a 220s @ .050 cam, the low lift flow is deficient. Bottom line is: just port the heads, theres no place but up at that point.
Last edited by cutlassefi; August 27th, 2022 at 01:42 PM.
#39