LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Lazer cams

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Old Mar 27, 2008 | 03:47 PM
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Default Lazer cams

Im trying to find what kind of valve springs to use with my SR cam. The cam is from Lazer Cams but they do not have an active phone number or website. Can somebody please recomend me a company so that I can get a some valve springs for my cam. I do not want to call comp aboyut this either. Thanks. if the specs of the cam are needed I will provide them.
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Old Mar 27, 2008 | 10:39 PM
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what is the max lift of the cam with the rockers you are using
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Old Mar 27, 2008 | 10:44 PM
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Originally Posted by jester1614
what is the max lift of the cam with the rockers you are using

With 1.5 rr the gross lift is .636, I'll be using 1.6rr so Im guessing around the 660ish area?.
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Old Mar 28, 2008 | 10:57 AM
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.678 is the max lift with 1.6


(.636/1.5)x 1.6


look for springs that will support that lift
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Old Mar 28, 2008 | 12:14 PM
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Originally Posted by jester1614
.678 is the max lift with 1.6


(.636/1.5)x 1.6


look for springs that will support that lift
Thanks for the reply, I was going to look for a spring to support the lift but what about the spring height?.
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Old Mar 28, 2008 | 12:31 PM
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honestly i have no idea about that

my only advice would be what you dont want to do and that is call a spring manufacturer ie comp or someone like summit or jegs that sells em

here is what i can find

i dont know if these numbers are valid

http://www.streetperformance.com/par...-campower.html
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Old Mar 28, 2008 | 02:23 PM
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Originally Posted by jester1614
honestly i have no idea about that

my only advice would be what you dont want to do and that is call a spring manufacturer ie comp or someone like summit or jegs that sells em

here is what i can find

i dont know if these numbers are valid

http://www.streetperformance.com/par...-campower.html

Yea, I saw that site and the numbers arent active anymore. Would calling a shop like Thunderracing give me the specs im looing for?
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Old Mar 28, 2008 | 02:57 PM
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give em a call and see what they say


what do you really have to lose, the worst they will say is sorry cant help
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Old Mar 29, 2008 | 07:28 AM
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Originally Posted by MEAN LT1
Im trying to find what kind of valve springs to use with my SR cam. The cam is from Lazer Cams but they do not have an active phone number or website. Can somebody please recomend me a company so that I can get a some valve springs for my cam. I do not want to call comp aboyut this either. Thanks. if the specs of the cam are needed I will provide them.
Wow, I am surprised about Lazer, I met Bill Metzger (owner of Lazer) a few years back, then he passed away but his company still went on, We have used a few of his cams and they are great, Bill was hardcore and like very tight lobes centers i.e. 106-108 but they made for a few bad *** LT1's. I also went to check out the website and stated, they are not there anymore....
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Old Mar 29, 2008 | 05:41 PM
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Originally Posted by moehorsepower
Wow, I am surprised about Lazer, I met Bill Metzger (owner of Lazer) a few years back, then he passed away but his company still went on, We have used a few of his cams and they are great, Bill was hardcore and like very tight lobes centers i.e. 106-108 but they made for a few bad *** LT1's. I also went to check out the website and stated, they are not there anymore....

Yea, the one I have is on a 108lsa,should chop pretty good in a 355. Any suggestions on valvesprings since your familiar with them?
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Old Mar 29, 2008 | 06:48 PM
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I think you are going to have to call a SERIOUS shop and talk to them with detailed cam specs.
None of the common springs are going to do the trick. My guess you are going to be looking at longer valves and something like Isky ToolRoom, Manley Nextek etc. meaning $4-500 springs not the cheap stuff most of us tun.
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Old Mar 30, 2008 | 07:42 AM
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Yup, Like 96 says, all manufactures have different ramp rates for their design on the camshafts, this plays an important part on the type of spring needed for specific open and close pressures. Of course you can call another cam company and get in the ball park but it is not like having a cam and spring combo from the same company...I can say one thing, Do not put LT4 valve springs like a lot of people suggest, It WILL take a very good spring.
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Old Mar 30, 2008 | 12:02 PM
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If they are out of business you might have to send it to a real cam comany like cam motion and have them cam doctor it so they can spec out some springs.
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Old Mar 30, 2008 | 01:21 PM
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Originally Posted by speed_demon24
If they are out of business you might have to send it to a real cam comany like cam motion and have them cam doctor it so they can spec out some springs.
I mgiht just do that, I'll probably call up ISKY and see what they recomend for a spring.
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Old Mar 30, 2008 | 01:40 PM
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Isky can't help without good info on the cam lobes. I would say you want at least advertized, .050 and .200 as well as peak numbers so they have an idea of the lobe profile.
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Old Mar 30, 2008 | 03:15 PM
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Originally Posted by 96capricemgr
Isky can't help without good info on the cam lobes. I would say you want at least advertized, .050 and .200 as well as peak numbers so they have an idea of the lobe profile.
Duration @.020 is 288 on the intake and 296 on the exaust. At .050 the duration 254/261 on a 108lsa. Lope lift is .424 on the intake and exaust and the gross lift is 636 on both sides.
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Old Mar 31, 2008 | 01:40 AM
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What kind of heads are you running? As you will have limitations on the max spring OD and the depth that you can cut the spring pockets as well. You will more than likely be looking at 350-400 lbs. of seat pressure valve spring to be able to handle the lobe as it closes the valve properly, which means at least a 1.55" OD valve spring.
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Old Mar 31, 2008 | 09:40 AM
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Originally Posted by 1997bird
What kind of heads are you running? As you will have limitations on the max spring OD and the depth that you can cut the spring pockets as well. You will more than likely be looking at 350-400 lbs. of seat pressure valve spring to be able to handle the lobe as it closes the valve properly, which means at least a 1.55" OD valve spring.

The head for right now will be stock ported. Can the stock heads be machined enough for that kind of OD spring?.
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Old Apr 1, 2008 | 02:33 AM
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Originally Posted by MEAN LT1
The head for right now will be stock ported. Can the stock heads be machined enough for that kind of OD spring?.
I'll have to find my book at the shop, but I don't think that they will. I had some 1.46" OD springs on my 97' bird 4 yrs ago and they overlap into the head bolt pocket, on your two end bolts & the very center head bolt. I had to take the valve springs off to TQ my head studs and then re-assemble them on the motor. I was useing the 6 point nut version, but you would have a little more room if you used a 12 point nut.
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