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Is .500 lift too large for stock springs?

broncoman6524

broncoman6524

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I know the limit on a stock chevy spring is .500. So I'm guessing that a cam with a max lift of .500 would be too much? Especially when combined with 1.6 ratio rockers?

The heads are already getting screw in studs. So the stud should be able to handle it, but will the springs?

Reason I'm asking is I'd like to run this cam in my stroker, and my heads arent done yet. (at machine shop) So I'm thinking if this cam is pushing it I'll have them put in a set of new springs as well.

http://store.summitracing.com/partdetail.asp?part=CCA-CL12-244-4&autoview=sku
 
Install the matching set of springs for the cam you're going to use. Stock springs will not handle that kind of lift, and they won't have enough spring pressure either.
 
Last edited:
10-4.

So when I talk to the machine shop, I'll tell joe (owner) what cam I'm planning on using and talk to him about springs that are matched well for it.
 
What cam is it? You can find out yourself if you know the brand of cam as the website will list the suggested pieces to go along with that cam.
 
What is your intended use of this vehicle? That cam is pretty large and is going to lose a bunch of low end torque but gain top end hp. At any rate, the suggested spring for that cam is number 986-16 and it says cylinder head machining required. You will also need retainer number 740-16 to match those double springs. IMHO that cam doesn't belong in a 4x4 unless you are planning high rpm mud drags. You do know that is an extreme marine came don't you?

Comps footnotes on this cam says jet boat with A or B impeller, good off shore high performance cam, rough idle.
 
iran this

SB-Chevy - Bracket Master II

00016LK Adv. Duration: 248°/284°
Gross Lift: .458''/.458''
RPM Range: 1500-5200
from here
http://www.partshp.com/Lunati.htm

and got this

http://viewmorepics.myspace.com/ind...&MyToken=35e4a63a-c7ad-43a9-b972-1e0924d44ed5

stock vortec from gmpp, 2.0/1.55 sodium filled 220 or 212 cc runners...floated valves ...valve hit head and there you have it... buy good springs if you want the rough idle and the rpms that come w/ it, but w/ a sm465 you got all the low you need if your axles are geared right
 
It will be a mud truck, with a 4 speed. 4.56s and 38s or 39.5. The sole reason I picked a cam that large was the sound, but mainly the fact that I tend to tach it up when I play, to get the tires to spin good.
 
You are putting that cam in a stroker?
IMO unless you are building a all out full race engine, that is way too much cam. Strokers are low rpm engines. They tend to come apart at high RPMs over 5000. Strokers do real well on cams that top out at 5000-5500 RPM.
I hope you are spending some serious cash on the bottom end of your engine. If you expect to get a stroker to run over 5500 RPM without going BOOM.
 
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