LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

what springs for Crane 210/224

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Old May 10, 2004 | 07:08 PM
  #1  
toegead93's Avatar
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what springs for Crane 210/224

What springs do you guys reccomend for the Crane 210/224 cam.
.518 lift with 1.5RR. I will have 1.6RR so I'll need spring rated for .550.

Do I get single or double coil? Crane, Comp, Isky, Manley? Too many choices for me.
Old May 10, 2004 | 07:11 PM
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What's the LSA on that cam?
Old May 10, 2004 | 07:34 PM
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112 lsa 210/224 .511/.553 lift with 1.6 rockers
I'm gonna get this cam in a few months when I get some money, Frank95Z ran a 12.30@111.9 with the stock vertor full weight with it on the stock heads.
Old May 10, 2004 | 08:13 PM
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I think the spec on stock LT1 heads for spring installed height is 1.750" I use Isky valvetrain parts and basically you need to measure what you're installed height is going to be at valves closed and open then come up with a spring that will give you the right pressures at those heights, while keeping in mind that you need to have .100" before coil bind (where the spring bottoms out) pressures to look for in a hydraulic roller situation are as follows 125-135# seat pressure and 290-320# open pressure....I think a Isky 235-D single spring w/damper may work for you...
Old May 10, 2004 | 08:26 PM
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Originally posted by speed_demon24
112 lsa 210/224 .511/.553 lift with 1.6 rockers
I'm gonna get this cam in a few months when I get some money, Frank95Z ran a 12.30@111.9 with the stock vertor full weight with it on the stock heads.
I like the Specs but the LSA would rule it out as a Sleeper Cam.
Old May 10, 2004 | 09:00 PM
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actually i have this cam and it is a sleeper cam no real lope but makes ungodly power went 11.81 at 116 with heads i ported myself bolt ons long tubes and tuning on nittos great cam the best cam out there if you ask me
Old May 10, 2004 | 09:25 PM
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Yeah, with the low duration on this cam, the 112 LSA still gives a pretty small amount of overlap. Seems like the lope would be pretty small.

I was pretty set on getting the CC502(XE218/224) for my car, but now that I have headers and love my low end TQ, I think I'm leaning towards the Crane 210/224. I love how it keeps the awesome low end TQ of the LT1 and bumps up the TQ curve to higher RPM's also. The times that guys are running with this cam speak for themselves.

Dan
Old May 10, 2004 | 09:38 PM
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Spring options that I found in researching for this cam, which
I own but have not yet installed are:

Isky 235-D (single spring with damper is indicated above)

Comp 26915 (beehive ovate LS1 single spring)

I actually have a complete setup for both of these options and
will decide on which one I go with based on how the installed
heights look. Here is more info on the Comp springs:

26915 or 26918 springs depending on the pressure you want.
I think the 26915s are just fine for stock/mild applications.

Comp Press Release

If you want to go with 7 degree hardware:

787-16 retainers
648-16 locks

If you want to go with 10 degree hardware (super locks):

795-16 retainers
611-16 locks (standard), or
614-16 locks (+.050)

Using the standard hardware you should end up with a 1.75"
installed height. With the +.050 super locks you should
get a 1.80" installed height. Depending on your rockers and
lift numbers, a close check of valve stem seal to retainer
clearance and rocker to retainer clearance is warranted.

Also, FYI for a stock spring pocket:
The LT4 spring seats will not work with these springs. The OD
of the seat shoulder is .920" while the ID of the 26915 spring
is .875". The spring does not sit flush with the seat. So far I
have not found an off the shelf seat that will work.
Old May 10, 2004 | 10:00 PM
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Originally posted by speed_demon24
112 lsa 210/224 .511/.553 lift with 1.6 rockers
I'm gonna get this cam in a few months when I get some money, Frank95Z ran a 12.30@111.9 with the stock vertor full weight with it on the stock heads.
i ahve that cam, but i think i need some more tuning...onyl tuning i did was rev limiter gear change a a bit fuel mixture change...but i need a dyno tune, and hopefully ill be putting down around 315rwhp maybe more!!!
who knows....but damn tuning isss sooooo much, why cant it be like 40 bucks plus 20 for tuning
randy
Old May 10, 2004 | 10:30 PM
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how high will the 210/224 rev? also will it make better power than the hotcam? thanks
Old May 10, 2004 | 10:50 PM
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This is what I used with my 104227, All Crane equip.
lifters: 10530-16
pushrods: 10621-16
rockers: 10758-16
springs+retainers:10308-1
locks: 99097-7
Cloyes t/c +gears: 110021-7

Last edited by ishz28; May 10, 2004 at 10:53 PM.
Old May 11, 2004 | 12:03 AM
  #12  
toegead93's Avatar
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The 235-D Isky spring is rated to .550 and the cam's lift is.511 to.553. This means the Isky won't work, right?

and what's the difference between 7 degree and 10 degree hardware?

Man, I never realized this was so complicated
I'll figure this all out sooner or later.
Old May 11, 2004 | 12:13 AM
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The Isky springs will work fine with .553" lift. The difference
between the 7 and 10 degree hardware is mainly in strength.
The 10 degree hardware is probably overkill, but it's stronger
and is also available with +.050 locks which gives you more
flexibility in setting your installed height.

I would install the Isky 235-Ds at 1.77" (if possible) to get
close to 120 pounds open pressure. You can spend hours
just thinking about this stuff. The Isky springs are a good
price and will work fine. I got mine from Thunder Racing. I
also have the 10 degree locks and titanium retainers, and
both regular and +.050 locks. I don't want to be stuck once
I take things apart so I would rather have more than less.

Plus the Isky springs work fine with the factory L98 spring
seats. I have yet to find a seat that will work with the Comp
26915s.
Old May 11, 2004 | 12:32 AM
  #14  
toegead93's Avatar
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how's this looking...

-Crane LT1 Camshaft, 210 / 224, .511/.553(1.6rr)112 LSA
-LT1/LT4 Camshaft Swap Gasket Package(Thunder Racing)
-Comp Cams Pro-Magnum Non-Self-Aligning Roller Rocker Arms, 7/16" stud, 1.6 Ratio
-Isky 235-D Chrome Silicon Valve Springs, 1.260 OD Single Spring w/ damper, suitable to .550 lift, set of 16
-Comp Cams 10 Degree Titanium Retainers for Comp #987 Valvespring
-Comp Cams Valve Locks for Comp #730 Retainer
-ARP Rocker Arm Studs, 7/16"
-stock GM locator seats
-K-Line 11/32 Valve Stem Seals, set of 16
-K-Line 11/32 Valve Stem Seal Applicator
do I need the Valve Spring Height Micrometer for the install?
Any sites with a good install write-up are welcome. Thanks.
Old May 11, 2004 | 07:40 AM
  #15  
truedualws6's Avatar
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That is about the exact same parts I have. I did get
a micrometer because I will be testing out several
combinations. It really depends on if you want to spend
another $60. I think it's worth it to know where you
are and to make adjustments.

For install info check out Shoebox, he has a great
site with all kinds of good install info. Just searh for his
user name and check out his sig.



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