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Edelbrock Victor Hemi Heads #2203523
11/27/16 09:38 PM
11/27/16 09:38 PM
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Hot 340 Offline OP
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Do these require a custom piston with the rolled valve angles that these heads utilize?

Re: Edelbrock Victor Hemi Heads [Re: Hot 340] #2203765
11/28/16 04:36 AM
11/28/16 04:36 AM
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Bend,OR USA
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Probably shruggy You should call Edelbrock tech. to get the straight scoop scope
let us know what they say please work

Last edited by Cab_Burge; 11/28/16 04:37 AM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Edelbrock Victor Hemi Heads [Re: Cab_Burge] #2203775
11/28/16 08:21 AM
11/28/16 08:21 AM
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Im sure they will say "Yes" to the question. But what about a 10.5 engine with a lower .600 lift cam, 4.50 bore and 4.125 stroke? -The pistons have very little dome. I Know ultimately it will need mocked up but there is so much room in there now with standard valves its hard to see it would be a problem in this case.

I guess a better question would be..Has anyone have experience putting big valve heads on a pump gas 528?



http://www.jegs.com/InstallationInstructions/300/350/350-61169.pdf

Re: Edelbrock Victor Hemi Heads [Re: Hot 340] #2203810
11/28/16 11:52 AM
11/28/16 11:52 AM
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Cranberry Twp PA (North of Pit...
rumblefish72 Offline
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Why don't you call Diamond Pistons up and ask them. They supplied the pistons for the buildup that Mopar Muscle Magazine (Dan Foley) is doing as a multipart series in the latest issues. See: http://www.hotrod.com/articles/street-hemi-hardware-valvetrain-secrets-ray-barton/

In the first installment where they blueprint the head, they say that the exhaust angle only changed by 1.5 degrees. So I suppose that for anything mild on the camshaft/compression, you'll be fine. But as always, you need to check during mock-up so you can sleep at night.

That Edelbrock head really flows the number ... that give-away motor that MM did for Carlisle made big power. When I asked MM why it dyno'ed so big, they said that the Eddy Head with a just a little clean-up flowed really big CFM ... like as big as my Stage V with full street CNC from MCH. So I think that is the head to run to get big flow without spending a bunch of $$ on custom CNC work.

I wonder what happens to the rocker to valve tip alignment on the exhaust when you give the valve an extra 1.5 degrees of cant at the combustion chamber. That might move the tip of a long valve too far out for a stock rocker arm. Edelbrock says you can run all stock pieces with this head so I wonder how they engineered the additional 1.5 degrees AND kept the stock rocker geometry.


PS: That 440 block you sold me checked out good after coming back from sonic at the machine shop. Thanks!!


1972 Pro-Street 'Cuda, 500" Eagle stoker B Block, Eddy RPM heads, Victor Manifold, 850 Mighty Demon, Hemi 4 Speed, Dana 60 w/4.88 gears - Built by Hansen Racing Middlesex - NJ
Re: Edelbrock Victor Hemi Heads [Re: rumblefish72] #2203818
11/28/16 12:21 PM
11/28/16 12:21 PM
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Taxes & Virus's R-US, NY
Dragula Offline
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Buddy runs them on his 572 we dyno'd....Here's the story.

https://board.moparts.org/ubbthreads/ubbt...-pics-vids.html


'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: Edelbrock Victor Hemi Heads [Re: Hot 340] #2203881
11/28/16 02:53 PM
11/28/16 02:53 PM
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Stuttgart, Arkansas
rickseeman Offline
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Originally Posted By Hot 340
Do these require a custom piston with the rolled valve angles that these heads utilize?


I don't think that is a problem on an engine like you are building. You should have plenty of room. I recently built a 10.5 compression .600 lift 472 and had plenty of room.


2011 Drag Pak Challenger
Re: Edelbrock Victor Hemi Heads [Re: rumblefish72] #2203882
11/28/16 02:56 PM
11/28/16 02:56 PM
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Stuttgart, Arkansas
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Originally Posted By rumblefish72

I wonder what happens to the rocker to valve tip alignment on the exhaust when you give the valve an extra 1.5 degrees of cant at the combustion chamber. That might move the tip of a long valve too far out for a stock rocker arm.


Come on guys, do you think Edelbrock and Barton have done this before? The valve tip will be in the right place.


2011 Drag Pak Challenger
Re: Edelbrock Victor Hemi Heads [Re: Hot 340] #2203899
11/28/16 03:32 PM
11/28/16 03:32 PM
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I think Edelbrock did the same thing that MP did on the solid Hemi cast heads. They tilted the exhaust valve around the point where the rocker arm would contact the valve tip. There was a bit of a pocket around the exhaust valve head since the valve centerline was no longer going through the center of the chamber radius. I sold those heads to Hemi Fred for his turbo project several years back.

Big Valve Ex Seat.JPG

Floyd Lippencott IV
Re: Edelbrock Victor Hemi Heads [Re: rumblefish72] #2204057
11/28/16 09:59 PM
11/28/16 09:59 PM
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Originally Posted By rumblefish72
Why don't you call Diamond Pistons up and ask them. They supplied the pistons for the buildup that Mopar Muscle Magazine (Dan Foley) is doing as a multipart series in the latest issues. See: http://www.hotrod.com/articles/street-hemi-hardware-valvetrain-secrets-ray-barton/

In the first installment where they blueprint the head, they say that the exhaust angle only changed by 1.5 degrees. So I suppose that for anything mild on the camshaft/compression, you'll be fine. But as always, you need to check during mock-up so you can sleep at night.

That Edelbrock head really flows the number ... that give-away motor that MM did for Carlisle made big power. When I asked MM why it dyno'ed so big, they said that the Eddy Head with a just a little clean-up flowed really big CFM ... like as big as my Stage V with full street CNC from MCH. So I think that is the head to run to get big flow without spending a bunch of $$ on custom CNC work.

I wonder what happens to the rocker to valve tip alignment on the exhaust when you give the valve an extra 1.5 degrees of cant at the combustion chamber. That might move the tip of a long valve too far out for a stock rocker arm. Edelbrock says you can run all stock pieces with this head so I wonder how they engineered the additional 1.5 degrees AND kept the stock rocker geometry.


PS: That 440 block you sold me checked out good after coming back from sonic at the machine shop. Thanks!!
Glad that block worked out! We had that thing here since the '80's! Thanks for the info too!^

Re: Edelbrock Victor Hemi Heads [Re: Dragula] #2204059
11/28/16 09:59 PM
11/28/16 09:59 PM
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Originally Posted By Dragula
Buddy runs them on his 572 we dyno'd....Here's the story.

https://board.moparts.org/ubbthreads/ubbt...-pics-vids.html
thanks Dragula.

Re: Edelbrock Victor Hemi Heads [Re: rickseeman] #2204061
11/28/16 10:01 PM
11/28/16 10:01 PM
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Originally Posted By rickseeman
Originally Posted By Hot 340
Do these require a custom piston with the rolled valve angles that these heads utilize?


I don't think that is a problem on an engine like you are building. You should have plenty of room. I recently built a 10.5 compression .600 lift 472 and had plenty of room.

^ thats what I was thinking...guess in the end its a try it and see deal.

Re: Edelbrock Victor Hemi Heads [Re: Dragula] #2204095
11/28/16 11:01 PM
11/28/16 11:01 PM
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Arizona, USA
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Originally Posted By Dragula
Buddy runs them on his 572 we dyno'd....Here's the story.

https://board.moparts.org/ubbthreads/ubbt...-pics-vids.html


Those numbers seem a little low. I think MM got 850hp out of their 572 Eddy head build and that was with a hydraulic roller.

*edit: 872hp!

http://www.hotrod.com/articles/win-hemi-giveaway-motor-part-3-twist-572ci-beast-850-hp/

Last edited by gsmopar; 11/28/16 11:47 PM.
Re: Edelbrock Victor Hemi Heads [Re: gsmopar] #2204326
11/29/16 11:18 AM
11/29/16 11:18 AM
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Marion, South Carolina [><]
an8sec70cuda Online content
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Originally Posted By gsmopar
Originally Posted By Dragula
Buddy runs them on his 572 we dyno'd....Here's the story.

https://board.moparts.org/ubbthreads/ubbt...-pics-vids.html


Those numbers seem a little low. I think MM got 850hp out of their 572 Eddy head build and that was with a hydraulic roller.

*edit: 872hp!

http://www.hotrod.com/articles/win-hemi-giveaway-motor-part-3-twist-572ci-beast-850-hp/

I doubt very seriously that Muscle Motors engine will ever run like that claimed 872 hp. Another magazine dyno motor. rolleyes


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: Edelbrock Victor Hemi Heads [Re: an8sec70cuda] #2204513
11/29/16 04:15 PM
11/29/16 04:15 PM
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Bend,OR USA
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Originally Posted By an8sec70cuda
Originally Posted By gsmopar
Originally Posted By Dragula
Buddy runs them on his 572 we dyno'd....Here's the story.

https://board.moparts.org/ubbthreads/ubbt...-pics-vids.html


Those numbers seem a little low. I think MM got 850hp out of their 572 Eddy head build and that was with a hydraulic roller.

*edit: 872hp!

http://www.hotrod.com/articles/win-hemi-giveaway-motor-part-3-twist-572ci-beast-850-hp/

I doubt very seriously that Muscle Motors engine will ever run like that claimed 872 hp. Another magazine dyno motor. rolleyes

iagree haha I've seen nice race cars at the local SO CA drag strips get featured in some of the better Petersen Publishing magazines that the times printed where enhanced buy a bunch by the writer to help sell the mags shruggy

Last edited by Cab_Burge; 11/29/16 04:16 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Edelbrock Victor Hemi Heads [Re: Hot 340] #2204585
11/29/16 05:59 PM
11/29/16 05:59 PM
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Arizona, USA
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MM's numbers are more in line to some of the posts in this thread. This is my first Hemi. I don't really know what to expect.

http://www.yellowbullet.com/forum/showthread.php?t=1203698&highlight=

Re: Edelbrock Victor Hemi Heads [Re: Hot 340] #2204625
11/29/16 06:49 PM
11/29/16 06:49 PM
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nielsville, minn.
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quickd100 Offline
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For what it's worth...when I built my 605 the kit came with diamond pistons. At the time I was using an Indy 426sr head,(stock size valves with stock valve angles). I had a Bullet custom roller ground up for it. When mocking things up I found I didn't have enough p/v clearance and had the valve reliefs cut. After buying a set of Indy Hi-Po heads with the big valves and exhaust tilted 1.5 degrees I had loads of p/v clearance. I'm guessing the pistons were aready set up for the altered valve angles.
You will also have a bit more exhaust lift with the tilted exhaust valve as it moves it closer to the center of the rocker arm.

Re: Edelbrock Victor Hemi Heads [Re: gsmopar] #2204633
11/29/16 07:03 PM
11/29/16 07:03 PM
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Marion, South Carolina [><]
an8sec70cuda Online content
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872 hp is extremely optimistic for a 10.5:1 572" hemi w/ "conventional" heads, a mod man intake, and a baby hyd. roller cam (258/270 at .050, .598"/.579" lift). And they only turned it 6200-6300 rpm. I call BS on it. It'll be another one of those 10 or 11 sec 800 hp buildups.
I bet the motor Dragula posted about, that made 100+ hp LESS, would walk over it.



CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: Edelbrock Victor Hemi Heads [Re: Hot 340] #2204654
11/29/16 07:29 PM
11/29/16 07:29 PM
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nielsville, minn.
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I'd have to agree, that's BIG numbers for that combination. Dave

Re: Edelbrock Victor Hemi Heads [Re: quickd100] #2204673
11/29/16 07:58 PM
11/29/16 07:58 PM
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Romeo MI
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I have heard MM has a VERY HAPPY DYNO.. seen some
engines come off it and were no where near that
on the track
wave

Re: Edelbrock Victor Hemi Heads [Re: Hot 340] #2204711
11/29/16 08:57 PM
11/29/16 08:57 PM
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nielsville, minn.
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quickd100 Offline
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Dyno numbers can be argued and talked to death. Top numbers are just bragging rights until it see's the strip. What some people fail to realize is the dyno is just a tuning tool. What's important is to compare the starting numbers to what you finally achieve tuning, testing, and tinkering. $.02 Dave

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