Looking for proper valve spring recomendations for a BBC with 290 heads, Luni 60203 cam @ 6000rpm Max.
I have an opportunity at either Comp Cams #911s or Crane #99837 springs

Are either sutible for my needs or both??

Thanks :)

You'd be best off to get a recommendation from Lunati as to what springs they recommend with that cam.

I am running the 60203 & I am using Comp 911 springs.

Lun recommends Lun springs which are not readily available in this area!
welcome to rural Ka-Na-Da :D

& to tell the truth, trying to read the specs required would drive a man to drink :confused: seems nobody uses the same standards to measure tension!

Luni recommends .. 120lbs @ 1.820" on the cam card but when you go to their rec spring #73815 specs all you get is 337lbs/in...:confused:

Comp Cams #911..122lbs @ 1.9"

Crane #99837 rates them 320lbs/in

All are single coil springs, it appears to me either would fit the bill.
So maybe the question should be quality!
Any known quality issues with either manufacturer??

Lun recommends Lun springs which are not readily available in this area!
welcome to rural Ka-Na-Da :D

& to tell the truth, trying to read the specs required would drive a man to drink :confused: seems nobody uses the same standards to measure tension!

Luni recommends .. 120lbs @ 1.820" on the cam card but when you go to their rec spring #73815 specs all you get is 337lbs/in...:confused:

Comp Cams #911..122lbs @ 1.9"

Crane #99837 rates them 320lbs/in

All are single coil springs, it appears to me either would fit the bill.
So maybe the question should be quality!
Any known quality issues with either manufacturer??
=
Welcome to the wonderful world of confusion,,, I live in it every day :D
Had to quit drinkin about 20 years ago though,,, everything started making too much sense :D :D

Read this & see if it helps at all with spring specs
http://www.chevelles.com/forums/showthread.php?t=143980 (http://www.chevelles.com/forums/showthread.php?t=143980)

To your question, it sounds like either of the springs will work assuming you can get the correct installed height.
You should probably measure this before buying the springs
Installed height is from the head surface or shim surface to the outer step of the bottom of the retainer.
Best tool to measure is a spring height mike.
A telescoping gauge (some call it a "snap gauge") is probably next.

No trick tools,, no worrys LOL,, just take a piece of stiff wire & cut it until it fits & measure it with calipers or a ruler.
With the Comp springs you will need the Comp retainers as they install higher than your stock ones. (about .050 taller from memory)
I don't know the specs on the Crane spring but if they are 1.900 too you will probably still need different retainers.

And remember there are two stock spring heights here.

1.88" and 1.80"!

The shorter one is from the later 454 P/U motor heads if I remember right.

pdq67

And remember there are two stock spring heights here.
1.88" and 1.80"!
The shorter one is from the later 454 P/U motor heads if I remember right.
pdq67

The 236 peanut heads I took off had some kind of washer under the springs
Would that explain the short spring requirment for that head?

The 1969 - 290 heads I'm using had no such washer under the spring.
The block is a 1986.
Still waiting for the heads to return from the shop so can't do a measurement!

I found two sets of springs in a trader mag, $40 for the Comps (new price here $129. + txs & shipping) & $50 for the Crane (new price here $139. + txs & shipping) so you can see they are quite a savings!
Sounds like I should try for the Crane springs.

Hello senior,
That "trader" mag wouldn't happen to be the Isell?? I think I saw some Crane springs for sale there. If so check out those deals on a set of 049 heads with the intake valve seats cut for 2.19.

From what I can understand (correct me if I am wrong guys).
You can subtract the coil bind height from the installed height and you will get the max valve lift allowed by the spring. Those washer shims could be exhaust valve rotators...

Hello senior,
From what I can understand (correct me if I am wrong guys).
You can subtract the coil bind height from the installed height and you will get the max valve lift allowed by the spring. Those washer shims could be exhaust valve rotators...
=
Close ;)
You might want to add (or subtract depending on how you look at it ) another .050-.075 or so as you cannot run the spring to coil bind.
Also, you will find that the coil bind number sometimes varies quite a bit between springs in the same box.
And you still need to take into account the pressures involved.

Hey thanks Mike,
I knew I was forgetting something I remembered it about 3 minutes after I posted. There is a additional .060 or so needed for clearance you must factor in. I was reading some of your other posts today and it seems you need a lot of statistical data to decide on the right springs. They seem to have different pressures as they are working even though some of the numbers are the same.

I think with a BBC it is not a good idea to "cheap" out on valvesprings when running high lift and duration. The valvetrain of a BBC can be very heavy. Although dear I am considering beehives. There ability to control the valves due to their lighter weight etc is excellent.

Yes Monty454, that's where I saw them.
I purchased the Crane springs.
I have a pair of 290 heads in the shop now being done so didn't pay much attention to the other heads.
Seems like a extra good buy at $220.
Do you have any extra BB pts for sale?
If so PM me, there's a couple items I'm still looking for.