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SKeown
AMC Addicted Joined: Jul/30/2009 Location: Texas Status: Offline Points: 3085 |
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Class Guy, I suspect welding a piece of cylinder wall into the exhaust pocket, then conforming it into the port to match the others would be frowned upon. Nevertheless, my point is what it is.
You should be proud of you're accomplishments.
SKeown Edited by SKeown - May/12/2010 at 3:26pm |
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74Bubblefender
AMC Addicted Charter Member Joined: Jun/29/2007 Location: The AMC form Status: Offline Points: 2589 |
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Great scott look at those poly profiles! Thanks for lining them up and sharing pics!! Gives a clue or a hint to how clueless the Indy profile seems to be.
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We are just about to forge new AMC V8 crankshafts.. please check here
http://www.bulltear.com/forums/showthread.php?19564 |
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DragRacingSpirit
AMC Addicted Joined: May/27/2009 Location: Mo Status: Offline Points: 903 |
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Just looking at the design it is by far more superior than any of the other profiles.
On the SR plug the intake runner inlet opening looks way small than the profile of the rest of the port...and I am sure that Indy did this intentionally on the SR head for "stock" type parts compatibility.
If you open it up to match the rest of the runner and bowl size it looks by far superior than anything else pictured to me.
Edited by DragRacingSpirit - May/12/2010 at 4:29pm |
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Best 1/4 mile 8.99, 1/8 mile 5.71, 60 foot 1.27, no power adders
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steeters
AMC Addicted Joined: Feb/02/2008 Location: California Status: Offline Points: 895 |
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Wow Ken, it looks like you've got an 18 year old cat with a nervous colon roaming around the carpet.
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Class Guy
AMC Addicted Joined: Jul/02/2007 Location: Arkansas Status: Offline Points: 969 |
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What they lack in finesse, they make up for in volume. A sewer pipe does not have to flow well, just enough.
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74Bubblefender
AMC Addicted Charter Member Joined: Jun/29/2007 Location: The AMC form Status: Offline Points: 2589 |
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I dont like the SR's out of the box they flow less than Edelbrocks but show more potential.
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We are just about to forge new AMC V8 crankshafts.. please check here
http://www.bulltear.com/forums/showthread.php?19564 |
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74Bubblefender
AMC Addicted Charter Member Joined: Jun/29/2007 Location: The AMC form Status: Offline Points: 2589 |
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Edited by 74Bubblefender - May/12/2010 at 5:21pm |
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We are just about to forge new AMC V8 crankshafts.. please check here
http://www.bulltear.com/forums/showthread.php?19564 |
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Ken_Parkman
AMC Addicted Joined: Jun/04/2009 Location: Ontario Status: Offline Points: 1814 |
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The Indy SR is a really nice serious performance design that is screwed up to match a stock port opening. At least that's my opinion. Most of the port is actually sized very nicely for the size of the valve, and the ssr is much larger. The problem is the fairly poor machining and the stock size port inlet that is way out of line with everything else. Fix those things and you got a pretty nice serious performance cylinder head that'll make some power. You do need to pay attention to CSA.
Out of the box it's actually sorta dumb. My opinion is the Edelbrock is a good street performance piece out of the box, ideal for a guy who wants an upgrade from stock and an aluminum head but does not to get into porting. But it's just not got the design for big power like an Indy. The port volume is just not there, and to get it would be a lot of work and you would still never get the ssr. Still fine for a milder race car, say 10's or 11's.
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74Bubblefender
AMC Addicted Charter Member Joined: Jun/29/2007 Location: The AMC form Status: Offline Points: 2589 |
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Both heads are fantastic and we are very lucky to have more than the OEM choice. I stand by my first post in this thread for most intake gain out of a stock production AMC head without epoxy.
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We are just about to forge new AMC V8 crankshafts.. please check here
http://www.bulltear.com/forums/showthread.php?19564 |
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Steve_P
AMC Addicted Charter Member Joined: Jun/28/2007 Status: Offline Points: 3806 |
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Ken P or Hurst 390: I know the mold is screwed up, but is the short side radius on the trapezoid head as non-existent as the mold makes it look?
Ken: thanks for posting the mold pics.
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