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Old 04-21-2012, 06:59 PM   #1
Hilltop55
 
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Default 355 head selection

Hi I'm new here, my name is Lou and I'm from south Jersey. I purchased a set of iron eagle 215's with 2.05 valves 64 cc and angle plugs. My question is I would like to put them on a new motor I built in my 55 Chevy. The motor is a 350. .30 over with a crane solid lift cam 534 lift/280 duration. I'm concerned abouth the pistons. They are TRW forged L2304f with .100 dome height. I'm interested in opinions regarding compression ratio and I want to drive the car on the street. Your thoughts?
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Old 05-20-2012, 07:23 PM   #2
a67rat
 
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Quote:
Originally Posted by Hilltop55 View Post
Hi I'm new here, my name is Lou and I'm from south Jersey. I purchased a set of iron eagle 215's with 2.05 valves 64 cc and angle plugs. My question is I would like to put them on a new motor I built in my 55 Chevy. The motor is a 350. .30 over with a crane solid lift cam 534 lift/280 duration. I'm concerned abouth the pistons. They are TRW forged L2304f with .100 dome height. I'm interested in opinions regarding compression ratio and I want to drive the car on the street. Your thoughts?


I believe that's a bit much compression for pump gas if that's what you asking is go with a bigger combustion chamber
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Old 05-21-2012, 02:48 AM   #3
MightyMouse
 
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I don't see a problem with that kind of compression ratio as long as the cam is matched right. I'm thinking a looser lobe separation around 112, and around 264 degrees @ .050 lift. If your concerned about valve to piston clearance, mock up the engine, use modeling clay and fill in the valve reliefs on the pistons. Usually, a minimum of .060" clearance is recommended. If it's less then that, you can run a thicker head gasket. Be sure to keep your quench around .040". J
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Old 05-21-2012, 04:10 AM   #4
want-a-be
 
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Originally Posted by MightyMouse View Post
If your concerned about valve to piston clearance, mock up the engine, use modeling clay and fill in the valve reliefs on the pistons. Usually, a minimum of .060" clearance is recommended. J
You want a minimum of .095" on the exhaust and .045" on the intake.

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Old 02-11-2013, 02:23 AM   #5
ratsass
 
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Default head flow data

Does anyone have the head flow data for the Dart iron Eagle S/S 165 head # 10024361? It looks like Dart has # 10024370 listed instead and it's causing me grief trying to get them into our Street Stock rules package.
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