Pushrod Question

[360tripleblack7]

Hello Guys,

I'm changing the Camshaft and Valve springs... So I'm having some concerns if my current pushrods will resist at this new valve springs pressures.

My current pushrods:

Brand: Crane Cams
Pushrod Tube Diameter: 5/16 in.
Pushrod Material: Chromoly
Wall Thickness (in): 0.050 in.

Valve springs pressure:

Spring Rate (lbs/in): 363
Coil Bind: 1.140
Seat Load: [email protected]"
Open Load: [email protected]"
Installed height: 1.880"

 

[1970Duster]

What was the previous spring specs?

 

[360tripleblack7]

I was running with Mopar Performance Double w/ Dumper...

PN#: P3614542

The presssure that I found is:

1.750"_____89#
1.700"____109#
1.650"____129#
1.600"____149#
1.550"____169#
1.500"____191#
1.450"____212#
1.400"____233#
1.350"____254#
1.300"____276#
1.250"____302#
1.200"____328#
1.150"____370#

Inner spring coil binds @ 1.115"

 

[1970Duster]

You using a solid or hyd cam.

 

[360tripleblack7]

Solid Flat-Tappet.