Re: Question about Aluminum heads.
[Re: POS Dakota]
#1039737
07/26/11 12:43 AM
07/26/11 12:43 AM
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Joined: Apr 2009
Posts: 3,433 Toronto
mshred
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master
Joined: Apr 2009
Posts: 3,433
Toronto
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Quote:
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The Pro Comps are Edelbrock knock off's. Good castings and everything I have seen looks to be real good.
Good Luck
I've been waiting to see the smallblock heads they were supposedly going to make...
yea me too...they were in their catalog, but havent heard or seen anything about them since then
to the OP, if you are looking for a cam I would give Brian at IMM engines a call. He can spec you an awesome custom grind that will work for YOUR setup and it wont set you back any more than an off the shelf grind. Top notch guy who knows his chit and is willing to help
good luck
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Re: Question about Aluminum heads.
[Re: ahy]
#1039738
07/26/11 01:55 AM
07/26/11 01:55 AM
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Joined: Aug 2004
Posts: 1,047 Arizona
68CoronetRT
OP
super stock
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OP
super stock
Joined: Aug 2004
Posts: 1,047
Arizona
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For the cam, can you share a little more on the setup and your goals? Planned driving... street, strip, both? Compression ratio planned. From your post its a 4 speed, what rear ratio and tire size? How much "personality" do you want in the engine (lopey idle for example). Are you running power brakes?
Its a muscle car and I want it to sound like one. 3:54 gears in a Dana 60 I live in Arizona around the 5000' altitude mark so I am thinking with aluminum heads 10.5 or 11 to 1 on the compression ratio. 91 octane pump gas. Haven't bought the wheels and tires yet but thinking 15" Magnum 500 for the wheels 28" on the tires???
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Re: Question about Aluminum heads.
[Re: 68CoronetRT]
#1039739
07/26/11 02:10 AM
07/26/11 02:10 AM
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Joined: Dec 2003
Posts: 1,153 Adrian, Mi
pro6pakRR
mopar addict
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mopar addict
Joined: Dec 2003
Posts: 1,153
Adrian, Mi
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I put the Edelbrock's on my 440 right out of the box.Have a mopar 590 cam Crane 1.6 roller rockers and a 6bbl.Been on car for 5 years and everything still works great.car has run 11.53@117 at #3895.
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Re: Question about Aluminum heads.
[Re: 68CoronetRT]
#1039742
07/26/11 10:17 AM
07/26/11 10:17 AM
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Joined: Jan 2003
Posts: 75,282 A gulag near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,282
A gulag near you.
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Quote:
I appreciate all the input. I am going with the Stealth heads for now since they seem to fit my plans better and require less "tweaking" and add-ons.
Maybe I should get the bare heads and have a shop install my valves and springs while they check out the head.
Any recommendations for a camshaft for this set up?
You can't buy the stealths bare anymore , a lot has changed in 5 years .
As far as those rockers , NEW Cats MAY be better??? They have/had an issue with the shaft that the roller tip rides on being brittle and breaking, the design of the rocker can pop the valve locks free and you'll know what happens next. One place to NOT SKIMP is on rocker gear, their failure can be very expensive to repair.
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Re: Question about Aluminum heads.
[Re: Chris'sBarracuda]
#1039743
07/26/11 10:21 AM
07/26/11 10:21 AM
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Joined: Aug 2004
Posts: 1,047 Arizona
68CoronetRT
OP
super stock
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OP
super stock
Joined: Aug 2004
Posts: 1,047
Arizona
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Look for a good set of used Eddys, or something like it. They're always for sale because of guys stepping up..
Chris..
I have been watching for a used set but so far nothing "undamaged" as popped up. I'll keep an eye out as I am not under a time crunch - just want to get my car back on the road again.
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Re: Question about Aluminum heads.
[Re: 68CoronetRT]
#1039744
07/26/11 10:23 PM
07/26/11 10:23 PM
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Joined: Jan 2007
Posts: 7,664 IN
ahy
master
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master
Joined: Jan 2007
Posts: 7,664
IN
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I believe 10.5-11.0 compression will work at 5000'. May be a bit high if you ever drop down in altitude. For the cam, I'll suggest something in the range of 230 degrees intake duration at .050". Hot enough for good power and sound but not a pain to drive. Comp and Hughes both have good offerings in that range. Assuming you want a hydraulic FT the Comp "Extreme Energy High Lift" or Hughes hydraulic FT would fit the bill. Both are fast rate cams and would need good adjustable rockers. A link to Mancini where both are advertised is below. 230 degrees at .050" would be borderline for power brakes. As posted above, an engine builder is a great resource to help pick a cam. http://chucker54.stores.yahoo.net/hughesengines.html
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Re: Question about Aluminum heads.
[Re: 68CoronetRT]
#1039747
07/26/11 11:16 PM
07/26/11 11:16 PM
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Joined: Dec 2006
Posts: 3,667 Arizona
Chris'sBarracuda
master
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master
Joined: Dec 2006
Posts: 3,667
Arizona
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Quote:
Quote:
Look for a good set of used Eddys, or something like it. They're always for sale because of guys stepping up..
Chris..
I have been watching for a used set but so far nothing "undamaged" as popped up. I'll keep an eye out as I am not under a time crunch - just want to get my car back on the road again.
Put an ad in the parts wanted section..
Chris..
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Re: Question about Aluminum heads.
[Re: 68CoronetRT]
#1039748
07/27/11 03:47 AM
07/27/11 03:47 AM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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The Engine works heads looks like re-packaged pro-comp heads, which are a copy of the Edelbrock Victor heads. These heads have smaller 72cc chambers than the Edelbrock RPM or 440 source stealth heads 80-84cc chambers, so they may bump your compression to about 11.5:1 (if using a flat top like the KB237, or TRW2355.) The RPM/stealth heads are about 10.25 to 10.5:1 compression with the same pistons. The above compression ratios assume the block is milled to zero deck, and uses a fel-pro 1009 head gasket (9.9cc.)
The pro-comp/Victor heads also require 0.600"+ offset intake rocker arms, and a valley tray.
The RPM/Stealth heads are closer to a bolt on, using stock rocker offsets, and you can use a stock intake / valley pan gasket.
The RPM heads may flow a bit better out of the box, but the angled spark plugs can also be a problem with some headers and exhaust manifolds. The Stealth heads have straight/stock location spark plugs, so that should not be an issue. The Stealth heads also look a bit like a stock head when painted.
All the heads mentioned require reduced wrench size head bolts or head studs, and 3/4" reach spark plugs.
The pushrod clearance needs to be checked with any of these heads. Depending on the rocker offset and ratio, the pushrod holes usually need to be enlarged for clearance.
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