2021-22 Circle Track Catalog

Iron Eagle Cylinder Heads for SB Ford $WUXHEROWRQSHUIRUPDQFHF\OLQGHUKHDGIRUDQG:HQJLQHVDVVHPEOHG YHUVLRQVDUHUHDG\WRJRULJKWRXWRIWKHER[&DVWLURQKHDGVXVHODUJHULQWDNHUXQQHUVDQG VWUHDPOLQHGYDOYHJXLGHERVVHVRIIHULQFUHDVHGDLUÀRZZKLOHWKHFRPEXVWLRQFKDPEHUV KDYHEHHQUHGHVLJQHGIRULQFUHDVHGKRUVHSRZHU6WDQGDUGYDOYHDQJOHDQGVSDFLQJDOORZV IXOOFRPSDWLELOLW\ZLWKDOO2(0VW\OHYDOYHWUDLQFRPSRQHQWV6ROGLQGLYLGXDOO\

Intake Runner

Comb. Chamber

Intake Valve 2.02"

Exhaust Valve 1.60"

Valve Spring Dia./Type

Part No.

Description

DRT13300010 Bare Casting 180cc

58cc

N/A

Pro 1 Cylinder Head for SB Ford 3URVPDOOEORFN)RUGF\OLQGHUKHDGKDVFFLQWDNHSRUWYROXPHIRURYDOWUDFNDSSOLFD - WLRQV+HDGRIIHUVH[FHSWLRQDOÀRZDQGLVPDGHIURP7DOXPLQXPZLWKFFFRPEXV - WLRQFKDPEHUVUDLVHGH[KDXVWSRUWVDQGLQWDNHSRUWVLQVWRFNORFDWLRQV6ROGLQGLYLGXDOO\ %DUHRUFRPSOHWHO\DVVHPEOHG

Intake Runner

Comb. Chamber

Intake Valve 2.02" 2.02"

Exhaust Valve 1.60"

Valve Spring Dia./Type

Part No.

Description

DRT13200010 Bare Casting 195cc DRT13211112 Assembled 195cc

62cc 62cc

N/A

1.60" 1.437"/Solid

Small Block Chevy Parts Kits 'DUW¶V3DUWV.LWVLQFOXGHYDOYHVVSULQJVVWHHOUHWDLQHUVORFNVJXLGHSODWHVVWXGV DQGVHDOV6ROGDVRQHNLWSHUF\OLQGHUKHDG

Valve and Spring Size

Seat Pressure

Coil Bind

Part No.

Description

DRT28111000 Parts Kit - (1) Head 2.02"/1.60", 1.250" Single 120 lbs @ 1.700"

1.170"

DRT28112000 Parts Kit - (1) Head 2.02"/1.60", 1.437 Dual DRT28212000 Parts Kit - (1) Head 2.05"/1.60", 1.437 Dual DRT28223000 Parts Kit - (1) Head 2.05"/1.60", 1.550 Dual DRT28423000 Parts Kit - (1) Head 2.08"/1.60", 1.550 Dual

130 lbs @ 1.800" 1.080" 130 lbs @ 1.800" 1.080" 215 lbs @ 1.900" 1.200" 215 lbs @ 1.900" 1.200"

SB Chevy SHP Engine Blocks $OOQHZ³6+3´6SH -

SB Chevy “Little M” 305 Engine Block DRT31151411 3UHPLXPFDVWLURQ EORFNLVDGLUHFW UHSODFHPHQWIRUWKH

FLDO+LJK3HUIRUPDQFH FDVWLURQEORFNVDUHDI - fordable, durable, and SUHFLVHO\PDFKLQHG Capable of handling XSWRKRUVHSRZHU KHDY\GXW\EORFNV KDYHWKLFNGHFNV PLQLPXPZDOO

SURGXFWLRQVPDOO EORFN&KHY\ yet includes several LPSURYHPHQWV%ORFN

features a Brinell hardness rating of 220, includes full ZDWHUMDFNHWFRQVWUXFWLRQDQGEOLQGWDSSHGKHDGEROWKROHV Part No. Deck Height Cylinder Bore Main Dia. Main Caps DRT31151411 9.025" 3.720" 2.45" Steel

WKLFNQHVVF\OLQGHUZDOOVVWRFNGHFNKHLJKWGXFWLOHLURQ PDLQFDSVDQGIXOOFRPSDWLELOLW\ZLWKPRVWVWDQGDUG2(0FRP - SRQHQWV2IIHUHGLQRUF\OLQGHUERUHYHUVLRQV

Deck Height

Cylinder Bore

Main Dia.

Main Caps

Part No.

Description

DRT31161111 SB Chevy 9.025" 4.000" DRT31161111L* SB Chevy 9.025" 4.000" DRT31161211 SB Chevy 9.025" 4.125" DRT31162211 SB Chevy 9.025" 4.125" * Signifies block with late, 1-pc. rear main seal.

2.45" Ductile Iron 2.45" Ductile Iron 2.45" Ductile Iron 2.65" Ductile Iron

SB Chevy SHP Pro Engine Blocks 7KH6+33URFRPELQHVWKHDIIRUGDELOLW\DQGEHQH¿WVRIWKH6+3ZLWKWKHDGGHG IHDWXUHVRIELOOHWPDLQFDSVELJEORFNFDPERUHVL]LQJDQGODUJHGLDPHWHUOLIWHU ERUHV$OOQHZSUHFLVLRQPDFKLQHGFDVWLURQEORFNVLQFOXGHSULRULW\PDLQEHDULQJRLOLQJ VLDPHVHGERUHVH[WUDWKLFNGHFNVDQGFRPSDWLELOLW\ZLWKPRVW2(0FRPSRQHQWV 2IIHUHGLQDQGERUHYHUVLRQV

Deck Height

Main Dia.

Main Caps

Part No.

Description

Cylinder Bore

DRT31161112 SHP Pro 9.025" 4.000" DRT31161212 SHP Pro 9.025" 4.125" DRT31162212 SHP Pro 9.025" 4.125"

2.45" Billet Steel 2.45" Billet Steel 2.65" Billet Steel

319

CIRCLE TRACK 2021-22

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