eddy e street heads vs trick flow

[Stegs]

Looking for your opinions

I have a rebuilt 440, done a few years ago, and it turned out it was a low compression build (about 8.7:1)

Talking with guys here and on another forum the suggest going with eddy e street heads with a 75cc to bump my compression to around 10:1

I was looking at new heads and i found trick flow heads for a little less, and they have 78cc

Wondering what you guys think? will going from 74 to 78 make a big difference?

what are your opinions on the 2 different brands? one better than the other?

Let me know

 

[lewtot184]

1cc is about .1 of a point in compression ratio.

 

[IQ52]

The Trick Flow head is far superior to the the E-Street.

 

[Stegs]

guys im sorry. I feel so stupid. I looked at the price and assumed it was for a pair of heads...not 1

I feel so stupid right now. DOH!

 

[moparcrazy]

i run eddy heads on my 440 and made 550 HP 600 TQ
9.5 com .560 lift cam stock bottom and 1000cfm Pro Systems carb

 

[Stegs]

yea i will go with the eddy heads b.c of price and i know they will work in my situation

Thanks for the input guys, sorry about my brain fart i had

 

[mmissile]

A good friend saw a set of the trick-flow heads on a reputable flow-bench. Let's just say the numbers weren't as good as expected. I'm not getting into details....but always investigate, before spending your money on ANYTHING.

 

[IQ52]

A good friend saw a set of the trick-flow heads on a reputable flow-bench. Let's just say the numbers weren't as good as expected. I'm not getting into details....but always investigate, before spending your money on ANYTHING.

Do they have a comparison of the Edelbrock head and the Trick Flow head on the same flow bench?

 

[lewtot184]

OOTB e-street intake flow numbers that were given to me.

.1- 62
.2-122
.3-183
.4-230
.5-262

to my knowledge none of the aftermarket heads live up to their advertised numbers OOTB.

 

[Stegs]

can we all agree for my sake, that e street heads will outflow the iron 906s

 

[lewtot184]

what's a pair of e-streets; $1600? i know the rpm's i have wouldn't work with stock push rods so there's an additional cost. so maybe you end up with $1800 for a 1.5 points in compression. from a money stand point i'd do a closer look at what you have for alternatives. i don't think that either the e-street or rpm heads are the OOTB power adders people think they are.

 

[Lazerwolf]

I have the E-Street heads on my 74 Charger with a 400. Wasn't a big fan of them originally but found out it was actually previous owner mismatching parts. Talked with both Edelbrock and Lunati techs on how to fix my issues, and due to cam failure (really previous owner failure) have engine out at the moment. Should know in week or two if better.

I think lewtot184 is dead on though, just adding heads are not the power adders people think they are. Summit is selling E-Street pair for $1350 and the ones on my 400 did use stock pushrods though, which I'm replacing with new cam.

 

[IQ52]

can we all agree for my sake, that e street heads will outflow the iron 906s

The E-Street heads will out flow the stock 906 heads.

Heads flows from bench to bench mean very little even if the bench is calibrated each time. The orifice plate used during the testing makes a huge difference. More accurate for comparing heads is to run them on the same bench. Here are airflow and horsepower comparisons run on the same flow bench and dyno.

Lift.......Stock iron heads intake.........ported iron heads intake

.100.................61 cfm............................85
.200.................133...............................160
.300.................190...............................210
.400.................215...............................237
.500.................229...............................250

Now back-to-back dyno runs with a 7.8:1 compression 440 using a .500" lift cam and changing only from the stock heads to the ported heads.

RPM............Stock iron TQ/HP..........Ported iron TQ/HP

3000..................431/246.................434/248
3200..................442/269.................457/278
3400..................449/290.................462/299
3600..................436/299.................447/307
3800..................430/311.................443/321
4000..................438/333.................450/343
4200..................444/355.................461/368
4400..................434/363.................461/386
4600..................429/376.................473/414
4800..................419/383.................467/427
5000..................405/386.................459/437
5200..................383.379.................453/448
5400..................361/372.................428/440

And so much for cylinder heads not making a difference! There is only a 69HP gain at 5,200 RPM.

So what do the Edelbrock heads flow on the same flowbench using the same orifice plate.

Lift............cfm

.100.........73
.200........148
.300........209
.400........254
.500........276

Yep, I think the Edelbrock heads will work good on your engine.

Oh, yes, I've tested the Trick Flow heads on the same bench and with the same orifice plate. They're pretty damn good. Much better than the Edelbrock.

"We guess....."
"I've been told........."
"I read somewhere........."
"My buddy told me he heard......"

all BS

I've personally tested them.

 

[Stegs]

The E-Street heads will out flow the stock 906 heads.

Heads flows from bench to bench mean very little even if the bench is calibrated each time. The orifice plate used during the testing makes a huge difference. More accurate for comparing heads is to run them on the same bench. Here are airflow and horsepower comparisons run on the same flow bench and dyno.

Lift.......Stock iron heads intake.........ported iron heads intake

.100.................61 cfm............................85
.200.................133...............................160
.300.................190...............................210
.400.................215...............................237
.500.................229...............................250

Now back-to-back dyno runs with a 7.8:1 compression 440 using a .500" lift cam and changing only from the stock heads to the ported heads.

RPM............Stock iron TQ/HP..........Ported iron TQ/HP

3000..................431/246.................434/248
3200..................442/269.................457/278
3400..................449/290.................462/299
3600..................436/299.................447/307
3800..................430/311.................443/321
4000..................438/333.................450/343
4200..................444/355.................461/368
4400..................434/363.................461/386
4600..................429/376.................473/414
4800..................419/383.................467/427
5000..................405/386.................459/437
5200..................383.379.................453/448
5400..................361/372.................428/440

And so much for cylinder heads not making a difference! There is only a 69HP gain at 5,200 RPM.

So what do the Edelbrock heads flow on the same flowbench using the same orifice plate.

Lift............cfm

.100.........73
.200........148
.300........209
.400........254
.500........276

Yep, I think the Edelbrock heads will work good on your engine.

Oh, yes, I've tested the Trick Flow heads on the same bench and with the same orifice plate. They're pretty damn good. Much better than the Edelbrock.

"We guess....."
"I've been told........."
"I read somewhere........."
"My buddy told me he heard......"

all BS

I've personally tested them.

Yes finally someone that can prove it. I dont expect 50+ HP with swapping heads, the whole reason im doing it is to bump my compression from 8.7ish to 9.5ish or higher. With a higher compression i can then swap out my intake, cam, lifters and throw on some headers for the most "bang for my buck"

If i got 25HP out of a head swap, id be really happy, but knowing i have a higher compression motor to work with is what im shooting for!

 

[moparcrazy]

Yes finally someone that can prove it. I dont expect 50+ HP with swapping heads, the whole reason im doing it is to bump my compression from 8.7ish to 9.5ish or higher. With a higher compression i can then swap out my intake, cam, lifters and throw on some headers for the most "bang for my buck"

If i got 25HP out of a head swap, id be really happy, but knowing i have a higher compression motor to work with is what im shooting for!

IQ52 is a very "and i do mean VERY" trust worthy knowledgeable Person.

 

[lewtot184]

just running some numbers: iq52's ported iron heads averaged 188+cfm between .100-.500 lift, hughs pro pocket iron averaged (from the numbers i have) 194cfm from .100-.500 lift, e-streets were 172cfm average for the same lift range.

i never said nor would ever say ported heads can't add power. my thoughts were purely looking at alternatives and not at assumed givens. i've blown a lot of money on heads and do believe some was wasted.

 

[IQ52]

Very true about the averages............however, earlier, during these very same dyno tests we took flow away from the .100" & .200" lifts and put that flow in the .300"-.500" lift range and gained horsepower. We now work the throat and bowls to get the flows up in the mid and upper lifts because that is where the horsepower seems to be. Me personally, I would chose the Edelbrock head over the above ported iron head. And if you do a service prep on the Edelbrock heads there is even more flow to be realized.