ROCKER ARM STUDS
Rocker Arm Studs Part No.
Description
Allstar Performance ALL90230
Small Block Chevy OEM Replacement, 7/16"-14 X 3/8"-24, 2.375 Overall Length
Part No.
Description
B
C
D
E
F
ARP High-Performance Series ( High-Performance studs are rated at 170,000 PSI. Pro Series are rated at 190,000 PSI.) ARP100-7101 SBC With Roller Rockers and Girdles, SBF with Roller Rockers and Girdles, 7/16"-20 Top, 7/16"-14 Bottom, (16) 1.900" .750" 1.000" 7/16"-20
7/16"-14
ARP100-7201 ARP134-7101 ARP135-7101 ARP134-7103 ARP134-7104 ARP134-7201 ARP135-7102 ARP135-7201 ARP135-7202 ARP200-7202 ARP234-7201 ARP234-7202 ARP234-7205 ARP234-7207 ARP235-7201 ARP235-7202
GM 4.3L V6, 3/8"-24 Top, 8mm x 1.25 Bottom, (12) SBC, Pontiac, 3/8"-24 Top, 7/16"-14 Bottom (16) BBC 7/16"-20 Top, 7/16-14" Bottom (16) SBC, Pontiac 7/16"-20 Top, 7/16-14" Bottom (16)
1.595" .800" 1.750" .700" 1.750" .800" 1.770" .700" 1.895" .710" 1.750" .600" 1.900" .750" 1.750" .750" 2.350" .850" 1.900" .750" 1.900" .750" 1.750" .700" 1.770" .700" 1.900" .860" 1.900" .850" 1.460" 1.100" 1.750" .800" 2.000" 1.650" 2.000" .820" 2.000" 1.3"/.820" 2.000" 1.650" 2.000" .820" 2.000" 1.025" 1.900" .660" 2.100" .850" 2.100" .750" 2.000" .750" 2.700" .850"
.580" .800" .850" .670" 1.000" .850" .750" .600" .850" 1.000" 1.000" .800" .670" .830" .850" .500" .850" .700" .700" .700 1.000" 1.000" 1.050" .830" .800" .800" .800" 1.300"
3/8"-24 8mm x 1.25
3/8"-24 7/16"-20 7/16"-20 3/8"-24
7/16"-14 7/16"-14 7/16"-14 7/16"-14
SBF With Roller Rockers, 3/8"-24 Top, 7/16"-14 Bottom (16) SBC Vortec, 3/8"-24 Top, 8mm x 1.25 Bottom (16) BBC Mark V, 7/16"-20 Top, 3/8"-16 Bottom (16) BBC 496 (8100 Series), 7/16"-20 Top, 10mm x 1.5 Bottom, (16) BBC Aluminum Head, 7/16"-20 Top, 7/16"-14 Bottom (16)
3/8"-24 8mm x 1.25
7/16"-20
3/8"-16
7/16"-20 10mm x 1.50
7/16"-20
7/16"-14
ARP Pro Series ARP200-7201
SBC with Roller Rockers and Girdles, SBF with Roller Rockers and Girdles, 7/16"-20 Top, 7/16"-14 Bottom (16)
7/16"-20 7/16"-20 3/8"-24 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20 7/16"-20
7/16"-14 7/16"-14 7/16"-14 7/16"-14 7/16"-14 7/16"-14 7/16"-14 7/16"-14 7/16"-14 7/16"-14 7/16"-14 7/16"-14 7/16"-14 1/2"-13 7/16"-14 7/16"-14 7/16"-14 7/16"-14 7/16"-14
SBC 7/16"-20 Top, 7/16-14" Bottom (16) SBC, Pontiac, 3/8"-24 Top, 7/16"-14 Bottom (16) SBC, Pontiac 7/16"-20 Top, 7/16-14" Bottom (16)
SBC with Roller Rockers 7/16"-20 Top, 7/16"-14 Bottom (16)
ARP234-7206 SBC with Roller Rockers and Girdles, 7/16"-20 Top, 7/16"-14 Bottom (16)
LS GEN III/IV, 5/16"-24 Top, 8mm x 1.25 Bottom (16)
5/16"-24 8mm x 1.25
BBC, 7/16" 20 Top, 7/16-14 Bottom, (16)
BBC Dart Aluminum Heads, 7/16"-20 Top, 7/16"-14 Bottom, (16)
2.000" 1.3"/.820" 1.000"
ARP235-7203 BBC Aluminum Heads, Exhaust Only, 7/16"-20 Top, 7/16"-14 Bottom, (8) ARP235-7204 BBC Aluminum Heads, Exhaust Only, 7/16"-20 Top, 7/16"-14 Bottom, (8) ARP235-7206 BBC Aluminum Heads, Exhaust Only, 7/16"-20 Top, 7/16"-14 Bottom, (8) ARP235-7207 BBC Aluminum Heads, Exhaust Only, 7/16"-20 Top, 7/16"-14 Bottom, (8) ARP235-7205 BBC Dart Aluminum Heads, 7/16"-20 Top, 7/16"-14 Bottom, (16)
ARP290-7201 ARP334-7201
Pontiac (1964 & Later) 7/16"-20 Top, 7/16"-14 Bottom, (16)
SBC 7/16"-20 Top, 7/16-14" Bottom (16)
ARP334-7202 SBC with Roller Rockers and Girdles, 7/16"-20 Top, 7/16"-14 Bottom (16) ARP334-7203 SBC with Roller Rockers and Girdles, 7/16"-20 Top, 7/16"-14 Bottom (16) ARP334-7204 SBC with Roller Rockers and Girdles, 7/16"-20 Top, 7/16"-14 Bottom (16)
ARP354-7204
Ford SVO 351 with Girdle, 7/16"-20 Top, 7/16-14" Bottom (16)
Stud Size
Stud Length
Part No.
Description
Base Size Base Length
Comp Cams High Energy and Magnum studs are recommended for use with moderate valve lift and spring pressures. Hi-Tech Race Studs are ideal for high RPM, roller cam equipped race engines. COM4500-16 High Energy Universal, 3/8"-24 Top, 7/16"-14 Bottom (16) 7/16" .680" 3/8" 1.750" COM4502-16 Magnum Universal, 3/8"-24 Top, 7/16"-14 Bottom (16) 7/16" .680" 3/8" 1.750" COM4503-16 Magnum Universal, 7/16"-20 Top, 7/16"-14 Bottom (16) 7/16" .750" 7/16" 1.750" COM4504-16 SBF, Magnum 3/8"-24 Top, 5/16"-18 Bottom, (16) 5/16" .680" 3/8" 1.750" COM4505-16 High Energy Universal, 3/8"-24 Top, 7/16"-14 Bottom, (16) 7/16" .680" 3/8" 1.750" COM4507-8 BBC Exhaust Only, Hi-Tech 7/16"-20 Top, 7/16"-14 Bottom, (8) 7/16" 1.680" 7/16" 2.00" COM4512-16 BBC, Hi-Tech, 7/16"-20 Top, 7/16"-14 Bottom, (16) 7/16" .750" 7/16" 1.900" COM4514-16 BBC Mark V/VI, Hi-Tech, 7/16"- 20 Top, 3/8"-16 Bottom, (16) 3/8" .750" 7/16" 1.900" COM4542-16 Mopar/Olds, Magnum, 3/8"-24 Top, 5/16"-18 Bottom, (16) 5/16" .580" 3/8" 1.520" COM4554-16 GM GEN III/LS1/LS2/LS6, Hi-Tech, 3/8"-24 Top, 8mm x 1.25 Bottom, (16) 8mm .800" 3/8" 1.500" Part No. Description A B C D Crane Standard Series CRN99147-16 7/16"-20 Top, 5/16"-18 Bottom 2.313" .813" 1.500" .875" CRN99152-16 † 7/16"-20 Top, 3/8"-16 Bottom 2.650" .750" 1.900" 1.000" CRN99155-16 7/16"-20 Top, 10mm-1.5 Bottom 2.650" .750" 1.900" 1.000" CRN99156-16 3/8"-24 Top, 7/16"-14 Bottom 2.396" .716" 1.680" .806" CRN99157-16 7/16"-20 Top, 7/16"-14 Bottom 2.560" .800" 1.760" .860" CRN99159-16 7/16"-20 Top, 7/16"-14 Bottom 2.670" .740" 1.930" 1.060" Dart Machinery DRT27002204 7/16"-20 Top, 7/16"-14 Bottom 3.300" 1.300" — .700" DRT27002223 7/16"-20 Top, 7/16"-14 Bottom 2.820" .820" — .700" † Conversion stud for BB Chevy Gen. V & VI, use OEM guide plates.
570 2021-22 ENGINE BUILDER CATALOG
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