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Manley Rocker Arm Screw-In Studs

  Professional
  • Manufactured in Manley's own CNC double spring turning centers
  • Minimum run out
  • 8740 material with 190,000 psi
  • Roller threads
  • large radii Flat Poly Lock surface

Street Master

  • Special maxalloy steel
  • Rolled threads
 
Part # Application Roller
Rockers
Stud
Girdles
Upper
Threads
Dimensions Price/
Set
A B C D
Professional
42276-16 SB Chevy & Ford Yes No 3/8" 2.425" .670" .945" .810" $49
42277-16 SB Chevy & Ford Yes No 7/16" 2.440" .660" .890" .810" $49
42287-16 SB Chevy w/ 18 head Yes Yes 7/16" 2.850" .750" 1.300" .800" $49
42288-16 SB Chevy & BB Chevy Yes Yes 7/16" 2.810" .740" 1.020" 1.050" $49
42290-8 SB Chevy & BB Chevy Yes Yes 7/16" 2.810" .740" 1.020" 1.050" $25
42287-16 BB Chevy Yes Yes 7/16" 2.850" .750" 1.300" .800" $49
42278-16 BB Chevy Yes No 7/16" 2.580" .820" .900" .860" $49
42255-8 BB Chevy w/ alum.
head, exhaust studs only
Yes Yes 7/16" 3.700" 1.700" 1.000" 1.000" $25
42266-16 BB Chevy Mark V w/ 3/8"
lower threads coverting to
Mark IV heads
Yes No 7/16" 2.600" .775" .885" 1.000" $49
42293-8 BB Chevy w/Dart aluminum Yes Yes 7/16" 3.300" 1.300" 1.000" 1.000" $25
Street Master
42106-16 SB Chevy & Ford n/a n/a 3/8" 2.560 .690 .840 1.030 $25
42147-16 SB Chevy & Ford w/Poly Locks n/a n/a 3/8" 2.420 .690 .920 .810 $25
42103-16 SB/BB Chevy & Ford n/a n/a 7/16" 2.550 .790 .890 .870 $25