Post up all the specs please....I would love to have the data to add them to my list and compare them
valve springs
- Thread starter 6spd
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Post up all the specs please....I would love to have the data to add them to my list and compare them
Good info....thanks
4340 has more carbon by .05-.15%, a little less chromium but has ~2% Ni thrown in for toughness compared to 4130.
8620 is a high alloy, low carbon steel common in gear manufacturing. It's pretty tough as well.
Both of their (4340 and 4130) properties is hugely contingent on the hardness they've neen HT'ed to. Without that number it's hard to compare.
3/8" x .083" wall - Stock to 50# of boost
3/8" x .120" wall - 50# to 80# of boost
3/8" x .145" wall - 80# to 100# of boost
7/16" x .095" wall - 100# to 120# of boost
7/16" x .120" wall - 120# to 140# of boost
7/16" x .165" wall - 140# of boost and up
Add the info to my list
Stock:
Tubing size: 3/8" x .060"
Material: 1010
----------------------------
MaxSpool Pushrods:
3/8" x .083" Heat Treated 4340 Chrome moly with 4340 billet cups
Gorilla push rods are 7/16" x .165" wall tappered to 3/8's on either end
I was told some other brands use 4310 with 8620 cups, according to MaxSpool
--------------------------
Manning: 4340 with billet ends
3/8" x .083" wall - Stock to 50# of boost; $220
3/8" x .120" wall - 50# to 80# of boost; $240
3/8" x .145" wall - 80# to 100# of boost; $260
7/16" x .095" wall - 100# to 120# of boost; $270
7/16" x .120" wall - 120# to 140# of boost; $290
7/16" x .165" wall - 140# of boost and up; $320
--------------------------
1998.5-2012 24 valve Cummins
Hamilton sells two styles of pushrods.......HD and Extreme
Hamilton HD Pushrods:
-3/8" x .095"
-4130 Chromoly w/ hardened 8620 ends
Hamilton Extreme:
Intake: 3/8" x .095"
Exhaust: 7/16" x .120"
------------------------------
Trend definately has choices, but they also can't spell...."Cummings" on their website
Cummins Pushrods | Trend Performance
Stage I
#TPD1160803-3
Black oxide
3/8" x .080" wall
Stage II
#TPD11601353-10C3
Satin finish
3/8" x .135″ wall
Stage III:
#TPD11601657-10C3
Satin finish
7/16" x .165″ wall
------------------------------
Manton's prices are great:
http://www.mantonpushrods.com/Images...rice_4_Web.pdf
Series 3:
-4130/4135 Hard Drawn
- Non-Guide Plate Use
Series 4:
-4130/4135 MeloniteTM Processed
-Guide Plate Use
Series 5:
-4130/4135 Salt Heat Treated to 275,000 p.s.i. Tensil
-Non-Guide Plate Use
------------------------------
Smith Brothers:
Smith Bros. Push Rods Bend Oregon
Made from 4130 chromoly tube.
They have 3/8 tube in .120” and .145” wall thickness
They have 7/16 tube in .095”, .120” and .165” wall tube.
They said the 3/8 diameter is most common on the Cummins engines, but there are a few customers that do order the larger 7/16.
The rep said the bottom near the lifter is usually the area of concern with the 7/16 pushrods as to whether they will clear or not. Here are some prices on sets of 12:
3/8 x .120 --- $178.80
3/8 x .145 --- $205.68
7/16 x .095 --- $180.48
7/16 x .120 --- $214.68
7/16 x .165 --- $268.32
Tubing size: 3/8" x .060"
Material: 1010
----------------------------
MaxSpool Pushrods:
3/8" x .083" Heat Treated 4340 Chrome moly with 4340 billet cups
Gorilla push rods are 7/16" x .165" wall tappered to 3/8's on either end
I was told some other brands use 4310 with 8620 cups, according to MaxSpool
--------------------------
Manning: 4340 with billet ends
3/8" x .083" wall - Stock to 50# of boost; $220
3/8" x .120" wall - 50# to 80# of boost; $240
3/8" x .145" wall - 80# to 100# of boost; $260
7/16" x .095" wall - 100# to 120# of boost; $270
7/16" x .120" wall - 120# to 140# of boost; $290
7/16" x .165" wall - 140# of boost and up; $320
--------------------------
1998.5-2012 24 valve Cummins
Hamilton sells two styles of pushrods.......HD and Extreme
Hamilton HD Pushrods:
-3/8" x .095"
-4130 Chromoly w/ hardened 8620 ends
Hamilton Extreme:
Intake: 3/8" x .095"
Exhaust: 7/16" x .120"
------------------------------
Trend definately has choices, but they also can't spell...."Cummings" on their website
Cummins Pushrods | Trend Performance
Stage I
#TPD1160803-3
Black oxide
3/8" x .080" wall
Stage II
#TPD11601353-10C3
Satin finish
3/8" x .135″ wall
Stage III:
#TPD11601657-10C3
Satin finish
7/16" x .165″ wall
------------------------------
Manton's prices are great:
http://www.mantonpushrods.com/Images...rice_4_Web.pdf
Series 3:
-4130/4135 Hard Drawn
- Non-Guide Plate Use
Series 4:
-4130/4135 MeloniteTM Processed
-Guide Plate Use
Series 5:
-4130/4135 Salt Heat Treated to 275,000 p.s.i. Tensil
-Non-Guide Plate Use
------------------------------
Smith Brothers:
Smith Bros. Push Rods Bend Oregon
Made from 4130 chromoly tube.
They have 3/8 tube in .120” and .145” wall thickness
They have 7/16 tube in .095”, .120” and .165” wall tube.
They said the 3/8 diameter is most common on the Cummins engines, but there are a few customers that do order the larger 7/16.
The rep said the bottom near the lifter is usually the area of concern with the 7/16 pushrods as to whether they will clear or not. Here are some prices on sets of 12:
3/8 x .120 --- $178.80
3/8 x .145 --- $205.68
7/16 x .095 --- $180.48
7/16 x .120 --- $214.68
7/16 x .165 --- $268.32
Last edited:
Maxspool springs and pushrods