440 Build Question

[303 Mopar]

These days I like the Beehive springs, they fit without concerns about what valve seals or what rocker., they do a good job controlling the valves & they aren't to costly..... But you probably can't return what you have so you need to look at PC type seals...   In order to select  the proper part you need an accurate I/D of the springs & the O/D of the valve stem (.375) & the top of your guides...

I went with beehive springs from Lunati that match their cam for rocker clearance. Still happy with them 5 years later....

I broke 2 beehive springs on my 505, could've just been me though....

[Chryco Psycho]

Could have been me , I drove it too 

[1 Wild R/T]

These days I like the Beehive springs, they fit without concerns about what valve seals or what rocker., they do a good job controlling the valves & they aren't to costly..... But you probably can't return what you have so you need to look at PC type seals...   In order to select  the proper part you need an accurate I/D of the springs & the O/D of the valve stem (.375) & the top of your guides...

I went with beehive springs from Lunati that match their cam for rocker clearance. Still happy with them 5 years later....

I broke 2 beehive springs on my 505, could've just been me though....

If you lost two & most folks never break one I'd suspect there was something wrong in the setup or you have crazy radical cam.... 

They are proven enough that GM uses them in the LS engines & Ford uses them in the Coyote... While they were new tech around 2000 they are pretty accepted these days...

[303 Mopar]

I broke 2 beehive springs on my 505, could've just been me though....

If you lost two & most folks never break one I'd suspect there was something wrong in the setup or you have crazy radical cam.... 

They are proven enough that GM uses them in the LS engines & Ford uses them in the Coyote... While they were new tech around 2000 they are pretty accepted these days...

Could have been me , I drove it too 

See what happens boys and girls when you let others drive your car......