T-Man M8 PSI valve spring kits

[He@vyMet@l#1]

Don't know if I'll go this route for my current project, but it's definitely an option:
https://www.tmanperformance.com/t-man-spring-kit/

[wfolarry]

Looks like they went with top shelf parts 
I use springs from AV&V the most.
Kibblewhite has a nice spring setup.
Didn't like the one from Ferrea.
Had a couple customers supply Wood springs for their build. No problems there.

[BigT]

Don't know if I'll go this route for my current project, but it's definitely an option:
https://www.tmanperformance.com/t-man-spring-kit/

My heads are there now getting these springs installed along with being machined for external head breather vents. I had springs in both heads break in my 124" build which inadvertently destroyed the engine.

[He@vyMet@l#1]

Ouch, that definitely sucks anytime it happens! 
I used to help a friend build/dyno V8 engines on a SuperFlow 901, and the only time that we ever had a valve spring break was on my newly built Chevy 383. It only had a mild hydraulic flat tappet cam with all new springs, retainers, and locks. We replaced the spring, and I ended up selling it about 30,000 miles later.