Thats the figures I had in my head too but wasnt too sure about it.

lol... sure I geuss so???...lol

I might be wrong but I thought I read somewhere that "bee-hive" style springs get terrible life expectancy thats why only drag racers run them of course its a totally different rpm range please correct me if Im wrong as you guys have my scared with this you need them over 3k talk

Beehive Valve Springs offer benefits not found with standard cylindrical springs, including reduced spring mass, better valve control with reduced spring pressure and a harmonic-resistant shape.

here is a pretty good read on beehive style springs...
http://www.performanceproductreview....06/Beehive.pdf

That's why I was surprised at the Hamilton springs' higher seat pressure?

The springs listed in the 2006 article link above are breaking:

http://forums.corvetteforum.com/show....php?t=1715377

http://www.ls1tech.com/forums/showthread.php?t=717173

those springs that broke are comp cam springs NOT Hamilton's...Hamilton has never had a broken spring...obviously from those threads comp had some QC problems(china?) witch they probably have fixed since they still make those springs for LS1's and if they all broke or were a bad design you'd not see them selling them anymore. shoot they now sell Beehive D-max spring too. My guess is comp cams had a bad run of springs...Hamiltons springs were designed for DIESEL applications out of higher quality materials..these are not a gasser spring that just happened to fit. they are made specifically for Hamiltion in the USA.. some of the biggest performance shop out there run them in their pulling trucks and daily drivers.
the reasons and benefits for a beehive spring design still hold true.
install with confidence:cool:

Are Hamilton springs made by Comp Cams?

LOL....NO Hamilton has NOTHING to do with comp cams...comp cams springs are made in china...Hamilton are 100% USA made and ONLY made for Hamilton to their specs...

Well, Don's post is non sequitur - what the heck do those LS6 springs have to do with CTDs then? :confused:

LS6 springs have nothing to do with our CTD's or Hamilton springs...I only posted the comp cam article because it talked about the beehive design and benefits...it has nothing to do with broken LS6 springs from a different manufacture who is saving money with china materials.
Hamiltons go through the extra peening process to help them last for the life of the CTD....

That must have been the same article I recall. I would like to see who has alot of miles on the hamilton springs though. Because I believe they wrote the failures off to mileage on the springs and not poor qc.

who is "they"?? comp cams?? the corvette owner??

Mark, do you have a link to specs or design elements of the Hamilton springs? I don't like to rely on he said/she said type comparisons...

I will try and get Zach to come on and post some specs today sometime:cool: