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 Post subject: SBC RHS Iron 220 Heads
 Post Posted: Sat Apr 21, 2012 2:26 am 
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Joined: Sat Jan 07, 2012 8:14 am
Posts: 55
Location: Nebraska
Figured I'd share some projects I've done recently. These are for a local Circle Track Team in my area, supposed to dyno these with the new Edelbrock Super Victor II #2892 manifold. Pretty excited to see what kind of power it makes.
Enjoy!

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Ferrea Hollow Stem Valves, 10* Bead Locks, Comp Cams Springs, and Tool Steel Retainers.
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Baseline Flow Numbers as received - 4.155 bore using #1205 Radius Plate/No Pipe
2.02 No Back Cut / 1.60
Lift------Intake-----Exhaust
.100-----73.1--------52.6
.200----131.4-------115.2
.300----190.0-------147.4
.400----240.7-------180.5
.500----278.9-------195.6
.600----300.0-------201.5
.650----301.9-------203.5
.700----303.1-------206.0

Final Flow numbers - 4.155 bore using #1206 Radius Plate/No Pipe
2.08 w/ Back Cut / 1.60 - Ferrea Hollow Stem Valves
Lift------Intake-----Exhaust
.100-----74.0--------48.1
.200----146.0-------102.7
.300----202.5-------139.9
.400----247.7-------185.1
.500----282.6-------206.1
.600----312.8-------219.5
.650----322.4-------223.1
.700----328.4-------225.7
.750----332.6-------229.2
.800----336.1-------233.7
.850----339.6-------236.2
.900----343.1-------238.1

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Nick Smithberg
http://www.smithbergracing.com


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 Post Posted: Sat Apr 21, 2012 4:12 am 
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Joined: Wed Apr 19, 2006 6:43 am
Posts: 1980
Location: Tell City, IN
Nice improvement! What Cubic Inch?

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6.11@110 Gas
1.3718 Sixty Foot with the rear wheels Gas

6.07@110 on Alcohol Injection with a 4-link 4-6-12
Best 60' 1.2537 Alcohol Injection 4-29-11
Thru the Mufflers!!


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 Post Posted: Sat Apr 21, 2012 4:30 am 
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Joined: Sat Jan 07, 2012 8:14 am
Posts: 55
Location: Nebraska
Its for a 363ci flat tappet motor (wish it was roller) that needs to spin 8200-8500 RPM. I guess this one is specific for a particular race that only has 3 or 4 shows a year (B Mod) and doesn't get claimed. It's a really nice piece with top notch parts.

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 Post Posted: Sat Apr 21, 2012 12:45 pm 
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Joined: Tue Apr 18, 2006 3:20 pm
Posts: 1457
Location: Missouri
Nice improvement. Can you tell what throat size, port volume and MCSA?

Let us know how the dyno session goes. =;

Rick


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 Post Posted: Sat Apr 21, 2012 4:54 pm 
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Joined: Sat Jan 07, 2012 8:14 am
Posts: 55
Location: Nebraska
rick360 wrote:
Nice improvement. Can you tell what throat size, port volume and MCSA?

Let us know how the dyno session goes. =;

Rick


Sure,

MCSA - 2.55
Intake - 244cc
Exhaust - 82cc
Chamber - 66cc
Throat - 91%
Velocity - 300 ft / sec center of port

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 Post Posted: Sun Apr 29, 2012 7:00 pm 
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Joined: Thu Feb 16, 2012 7:35 pm
Posts: 9
Is it true that RHS have stopped making their cast iron heads???

Great port work SMITHBERG


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 Post Posted: Sun Apr 29, 2012 7:09 pm 
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Joined: Sat Jan 07, 2012 8:14 am
Posts: 55
Location: Nebraska
All the info I have read lately says YES no more iron. :(

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 Post Posted: Wed May 02, 2012 3:38 pm 
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Location: Hatboro PA.
Engine Quest Bought the molds accept for the ford ones dart bought them.

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http://www.rogersperformance.com/


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