Page 440 - 2019-2020 Racecar Engineering Circle Track Parts and Accessories Catalog

Roller Series Camshafts For SB Chevy
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Advertised Duration Lobe
Part No. Application Grind RPM Range Valve Lift Hot Lash Duration @ .050" Center
ISK201652 Dirt Late Models, 3/8-1/2 Mile Tracks RR-652 3800-7400 .650"/.645" .024"/.028" 286°/298° 256°/264° 106°
ISK201653 Dirt Late Models, High Banked 1/2 Mile RR-653 4000-7600 .650"/.645" .024"/.028" 290°/302° 260°/268° 106°
ISK201643 Dirt Late Models, Med. Bank 1/2 Mile Tracks RR-640 4200-7400 .640" .028"/.028" 294°/302° 260°/268° 106°
Recommended Components
For Use With Hydraulic Series Cams Endurance Plus Mechanical Roller Lifters
Lifters ISK202-HY Isky Endurance Plus roller lifters feature TruTrac needle
Springs ISK205-D, ISK6005 roller bearings, a non-skid textured surface, premium 4340
Retainers ISK707-ST, ISK507-ST VWHHO SLQV DQG ³SDUDEROLF SUR¿OH´ FURZQHG RXWHU EHDULQJ
Locks ISKVL-11/32 UDFHV IRU ORQJ WURXEOH IUHH OLIH 6ROG LQ VHWV RI
For Use With Flat Tappet Se ries Cams
Description
Lifters ISK202-H Part No. SB Chevrolet 262-400, .150" Offset,
Springs ISK6105, ISK235-D ISK1241-LO-150 Steel Body With Aluminum Top
Retainers ISK507-ST, ISK707-STA SB Chevrolet 262-400, .185" Offset,
Locks ISKVL-11/32 ISK1241-LO-185 Steel Body With Aluminum Top
For Use With Roller Series Cams SB Chevrolet 262-400, Centerline,
Lifters ISK1241-LSH ISK1241-LSH Steel Body With Aluminum Top
Springs ISK9315 / ISK9365
Retainers ISK507-STA Red-Zone Maximum Endurance
Locks ISKVL-11/32
Mechanical Roller Lifters
Lifters are manufactured using Marathon roll-
Chevy Anti-Pump-Up er bearings, which use larger diameter pins and
Hydraulic Superlifters ISK202-HY thicker, shock-absorbing outer races for improved
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Isky Superlifters allow use of a more radical
hydraulic camshaft without loss of compression ERGLHV WR UHSHO VFXI¿QJ DQG D IXOO VSHFWUXP WKUHH
and horsepower from valves being left off of their SRLQW RLOLQJ V\VWHP 6HWV RI
VHDWV )LWV DOO &KHYUROHW 9 ¶V 6ROG LQ VHWV RI Part No. Description
ISK1271-LSH SB Chevy, .842" Dia., Aluminum Top, Centerline
Solid Lifters ISK1271-LO-150 SB Chevy, .842" Dia., Aluminum Top, (8) Centerline,
(4) Each .150" LH and RH Offset
Hardenable iron and special oiling solid lifters for Chevy ISK1271-LO-185 SB Chevy, .842" Dia., Aluminum Top, (8) Centerline,
and Ford. Special oiling lifters have a .024" oil hole (4) Each .185" LH And RH Offset
EDM-machined through the cam face for ex-
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Part No. Description Locks are machined from 4140
ISK202-H Chevrolet V-8, Hardenable Iron
ISKSO202-H Chevrolet V-8, Special Oiling chrome moly bar stock and heat
ISKSO382-H Ford V-8, Special Oiling WUHDWHG $YDLODEOH LQ ƒ DQG ƒ VW\OHV 7KH ³6XSHU ƒ´ ORFNV KDYH
ISK462-A Ford 2300cc 4 Cylinder a precisely ground outside diameter to provide a more consistent
installed height and are engineered for endurance oval track
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EZ-Max Mechanical Roller Lifters
Part No. Description
EZ-Max lifters incorporate Epsi- 7° Valve Locks
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lon-ZMAX solid bearing raceway ISKVL-11/32 For 11/32" Valve Stems, SB Chevy, SB Ford
material, an ultra-low-friction alterna- “Super 7°” Valve Locks
tive to needle bearings. Recommended ISKVL-700 For 11/32" Valve Stems, SB Chevy, SB Ford
for any application with over 400 lbs. seat ISKVL-750 For 11/32" Valve Stems,
and 1,100-1,400 lbs. open pressure. Sold in +.050" Higher Installed Height, SB Chevy, SB Ford
VHWV RI 10° Valve Locks
ISKVL10-11/32 For 11/32" Valve Stems, SB Chevy, SB Ford
Part No. Description
SB Chevrolet 262-400, .842" Dia., Aluminum Top “C”,
ISK1271LO185EZMAX*
(8) Centerline, (4) Each .185" LH And RH Offset Steel Valve Spring Retainers
SB Chevrolet 262-400, .842" Dia., Steel Body “A”,
ISK372LO180EZX* (8) Centerline, (4) Each .180" LH And RH Offset, 4130 chrome moly steel re tain ers are
Lightweight Version ideal for most oval track applications. Sold
SB Chevrolet 262-400, .842" Dia., Steel Body “B”, LQ VHWV RI
ISK372RHEZX*
(16) Centerline
Ford 351 SVO, 289-302, Boss 302, .874" Dia., Part No. Spring Application
ISK3972RHEZMAX ISK275-ST 9315, 9365, 9365-SP, 9365, 9385, 9965, 9975, 9985, 9995
Steel Body “A”, (16) Centerline, Lightweight Version
* For extra tall blocks with raised lifter bosses. ISK507-ST 6005, 6105, 6205
ISK507-STA 6205, 8005-A
ISK707-ST 205-D
ISK707-STA 235-D, 295-D
436 2019-20 CIRCLE TRACK PARTS AND ACCESSORIES