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Edelbrock E-CNC 185 Heads

General engine tech -- Drag Racing to Circle Track

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68maliblue
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Edelbrock E-CNC 185 Heads

Post by 68maliblue »

Apparently these heads have been out for quite a while but I haven't seen a lot of talk about them. They look like a good head for a street driven 355 I'm planning to put together. Has anyone used them and is there anything to watch out for?

https://www.jegs.com/i/Edelbrock/350/79895/10002/-1
1980RS
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Re: Edelbrock E-CNC 185 Heads

Post by 1980RS »

For me unless I need an aluminum head I would run a set of mild ported Vortec heads for the money. They look like nice heads but for 2K I bet there are others cheaper that flow the same as those.
68maliblue
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Re: Edelbrock E-CNC 185 Heads

Post by 68maliblue »

I missed the “sold each”. That explains a lot. I thought they were another variation of their e-street line which are sold as a pair.
jeff swisher
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Re: Edelbrock E-CNC 185 Heads

Post by jeff swisher »

I messed with 2 sets of the 5089 heads and there were some ridiculous tight valve guides.
So tight in fact one guys engine squealed and seized up. I was there to witness it.

There were 3 very tight guides and one so tight I had to pull with all my mite and twist the valve back and forth to get it out.

None of the valves would go back into that guide..No the tip was not dinked up either.

I looked at the flow numbers of that cnc head.
Not great enough difference over the 5089 to justify purchasing it.

Here are some numbers.
So as advertised by Edelbrock. 1020 flow bench. I had these flowed 4-1-2019 today on the SF600. The first set of numbers are from Edelbrock.
The other 2 sets are the SF600 bench.
The last set of numbers were from the same set of 5089 heads and I blended everything and raised the exhaust port some.
NO PIPE on exhaust.
Intake ......Exhaust. SF600 Stock In' .......Ex' ........ Blended ported IN'.........EX
.100" 63....... 51............................58.15........55.27.......................58.30.......44.00.
.200" 125.....99...........................121.5...........100.48..................123.00.....93.41.
.300" 182...131...........................178.2............135.02.................179.68.....136.9.
.400" 225....153............................222.15.........161.67.................226.9.......171.18.
.500" 248.....163...........................250.66..........171.18................256.01.....187.03.
.600" 249......168..........................255.42..........175.93.......550"...261.36....196.54.
.700"....NONE stated..................... 254.23...650" 179.10 ..............264.33.....198.12
.800"......NONE...............................................................................................199.71

Now see if I can load the cnc head advertised numbers.

Valve Lift Intake Exhaust
.100'' 61 53
.200'' 129 106
.300'' 186 147
.400'' 231 185
.500'' 250 199
.600'' 254 203
.700'' 253 209

Looks like they may be using a pipe on the exhaust side.. maybe not though
mag2555
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Re: Edelbrock E-CNC 185 Heads

Post by mag2555 »

Yes, those exh flow numbers would say tested with a pipe to me so triming them back by 4 to 5% starting at like .350” would get you into the ball park for numbers seen with out a pipe.
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dfarr67
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Re: Edelbrock E-CNC 185 Heads

Post by dfarr67 »

Still valve guide issues...
Years ago I was looking at various vortec heads (Etec 170/200) and settled on the AFR version for a bolt on- even then complaints about grease used as lube prevented oil from getting in and tight guides. I was willing to pay up front and not have to tune them up.
1980RS
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Re: Edelbrock E-CNC 185 Heads

Post by 1980RS »

My 062 Vortec heads flowed about the same as the Eddy heads, Eddy's exhaust flow was a little bit better but my heads used 1.94 and 1.5 valve size and cost a lot less.
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Re: Edelbrock E-CNC 185 Heads

Post by PRH »

I feel like I’m stating the obvious....... they’re within about $100 of a set of AFR195’s.

For me that would be a pretty easy decision to make.
Somewhat handy with a die grinder.
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