Is there any real difference in valve springs?

[bassackwards]

Picked up a 383 off Craigslist, got my new cam in it and got it running now PO comes up with a receipt showing the valve springs as being PBM 3000 hydraulic springs

• Brand: Erson Cams
• Category: Hydraulic
• Coil Bind: 1.160
• I.D. Outer: 0.880"
• Max Lift: 0.500
• Notes: Performance Only - Not OEM Replacement
• O.D. Outer: 1.250"
• Open Pressure: [email protected]
• Seat Pressure: [email protected]
• Spring Rate: 330
• Valve Spring: SINGLE
  
  
  Cam is a GM roller cam with .480/.496 lift and should max out at about 5k rpm.
  
  Any issues?

 

[centexk5]

As long as the spring meets the specs of the cam, it doesn't matter the manufacturer.

 

[bassackwards]

As long as the spring meets the specs of the cam, it doesn't matter the manufacturer.

They meet seat and open pressure, not sure if there is a difference between flat and roller tappet springs or not.

 

[Fastereddie]

What ratio rocker? 1.5 you “should” be ok. 1.6 and you may be coil binding. I would check to be sure.

 

[bassackwards]

What ratio rocker? 1.5 you “should” be ok. 1.6 and you may be coil binding. I would check to be sure.

It is .450/.465 with 1.5s and .480/.496 with the 1.6s that I am running

 

[TreeFarm]

They meet seat and open pressure, not sure if there is a difference between flat and roller tappet springs or not.

you have to consider if the springs physically fit the head, have enough seat pressure/open pressure, and the height they coil bind. If they meet all of those specs then they will be fine to use.

The difference between flat and roller tappet springs isn't that they are different, just that the lobe profile of the two cams require different specs. Roller cams generally have more aggressive ramp rates, requiring stiffer springs to keep the valves in control. Flat tappet cam lobes may fail and go flat if springs with excessive pressure are used. Basically, as long as they meet the specs they will be fine.

 

[76zimmer]

yes there is a big difference in valvesprings, the technology in the last 10 years could be compared to performance output ceiling of performance engines in general. Roller cams can take more spring pressure than flat tappets, but spring pressure depends on the cam specs and type of lifters used.
Check with a head/valvetrain specialist, but what you show should be fine w stock valvetrain hardware.
There is so many things to look at for proper valvetrain function, but definitely check your valve/rocker tip alignment and full lift clearance on the spring coil gap, rocker to retainer clearance, and rocker tip movement on the valve stem throughout the opening of the valves.