Beehive or dual valve springs? for big block

what is peoples experiance with beehive springs ?
on a solid FT cam.under 600 lift.
in a street strip car
durability ?
i see comp now lists some - same as big block chev.
am i better off with duals,bite the bullet and swap out the inners for break in
i do have source heads
oh - i don't plan for over 6500RPM
thoughts

Tex

I put beehives on my 360 earlier this year with only .474" lift, but steep ramps and a lot of duration. I shift at around 6,700 and they work great! One thing I really like about beehives is that you don't have to worry about retainer-to-rocker clearance!

I would call Comp Cams for their recommendations. But with the right installed and open pressures, the should work well for you also. After all, a lot of OEM engines use them. Beehives are suppose to have a few advantages over conventional springs, like lighter retainers and can get by with a little less pressure while still controling the valve train.

Flat tappet break in may be more difficult since you don't have inners to remove. Perhaps there may be a softer set of springs that could be substituted. But it would cost extra.

thanks Locomotion,
break in was what has me worried.
obvious not many if any are using them in big blocks.
Tex

I've used beehive springs in a bunch of Mopar engine builds. Look thru my articles in the tech archives and you'll find lots of pictures and part numbers.

The beehive springs are supposed to have good dynamics, and uses a smaller/lighter retainer. They are more expensive, and most I have seen are for under 0.600" lift cams. I thought about using them on my 505 buildup, but with 0.617" valve lift, I decided to just use dual springs. Besides, the dual springs are about $75 less than the beehive springs.

thanks Andy,
saw your write up on the 383 stroker.would you consider any break in issues possible if useing EDM solid lifters on either a comp or hughes cam with the beehive spring ?as opposed to the schubeck type
or would the hughes cam,possibly faster ramp,and greater lift be a stretch ?
comp XTQ286S 550/570 gross lift
Hughes HTL5660BS3 579/587 gross lift

thanks again,

Tex

Here is an article that I did for Mopar Max. I used an extremely agressive cam and a set of stiff beehive springs. No problems at all with break in.
http://www.moparmax.com/tech/2011/vi_8-flat-1.html

thanks mate,
i had read but forgot about that article.
i'll talk to comp next week

Tex

dual with a damper.