Motorsports Village
http://motorsportsvillage.com/forum/

SBC RHS Iron 220 Heads
http://motorsportsvillage.com/forum/viewtopic.php?f=5&t=9131
Page 1 of 1

Author:  SMITHBERG RACING [ Sat Apr 21, 2012 2:26 am ]
Post subject:  SBC RHS Iron 220 Heads

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!

Image
Image
Image
Image
Image
Image
Image
Image
Image
Image
Image
Image
Ferrea Hollow Stem Valves, 10* Bead Locks, Comp Cams Springs, and Tool Steel Retainers.
Image
Image
Image

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

Author:  us7race [ Sat Apr 21, 2012 4:12 am ]
Post subject:  Re: SBC RHS Iron 220 Heads

Nice improvement! What Cubic Inch?

Author:  SMITHBERG RACING [ Sat Apr 21, 2012 4:30 am ]
Post subject:  Re: SBC RHS Iron 220 Heads

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.

Author:  rick360 [ Sat Apr 21, 2012 12:45 pm ]
Post subject:  Re: SBC RHS Iron 220 Heads

Nice improvement. Can you tell what throat size, port volume and MCSA?

Let us know how the dyno session goes. =;

Rick

Author:  SMITHBERG RACING [ Sat Apr 21, 2012 4:54 pm ]
Post subject:  Re: SBC RHS Iron 220 Heads

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

Author:  MCEcomp [ Sun Apr 29, 2012 7:00 pm ]
Post subject:  Re: SBC RHS Iron 220 Heads

Is it true that RHS have stopped making their cast iron heads???

Great port work SMITHBERG

Author:  SMITHBERG RACING [ Sun Apr 29, 2012 7:09 pm ]
Post subject:  Re: SBC RHS Iron 220 Heads

All the info I have read lately says YES no more iron. :(

Author:  Mike Rogers [ Wed May 02, 2012 3:38 pm ]
Post subject:  Re: SBC RHS Iron 220 Heads

Engine Quest Bought the molds accept for the ford ones dart bought them.

Page 1 of 1 All times are UTC - 5 hours
Powered by phpBB® Forum Software © phpBB Group
http://www.phpbb.com/