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

Valve spring question 977-16

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Old May 24, 2006 | 04:18 PM
  #1  
roughneck427's Avatar
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Valve spring question 977-16

Well i **** canned my 987-16 because i was floating the valves with my CC503 at 6000rpm.I doing a cam swap with a GM847 and using 977-16 springs now what are you other users of this spring setting at your installed hieght.It says @1.850 its 155lbs seemd kinda high what do you guys think
Old May 24, 2006 | 06:30 PM
  #2  
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Re: Valve spring question 977-16

It should be OK at 155. It will loose 10/20lbs after break in.
To get the 1.850 installed height ya have to get .050 up retainers and .050 up keepers. They ya maybe have to run lash caps to keep the rockers off the retainer and longer push rods.
Old May 24, 2006 | 09:45 PM
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Re: Valve spring question 977-16

Yeah well guess ill have to ship my keepers and retainers back then damn valve train geometry is a PITA im having to buy all new stuff when i should have did it the first time
Old May 24, 2006 | 09:59 PM
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Re: Valve spring question 977-16

Just thought being the heads are going to be off im sure i can have my machinist cut my spring buckets down .050 to not have to buy all the .050 retainers keepers and lash caps to get the correct installed height
Old May 27, 2006 | 01:52 PM
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Re: Valve spring question 977-16

Originally Posted by roughneck427
Just thought being the heads are going to be off im sure i can have my machinist cut my spring buckets down .050 to not have to buy all the .050 retainers keepers and lash caps to get the correct installed height
Don't do that, just get the 614-16 locks for the retainers and that will solve the problem for about $25. Cutting the pockets can be inconsistant and maybe you will cut into the port, which is bad news.

You will be fine at 1.850-1.830" installed height range for that cam and springs. BTDT

Bret
Old May 29, 2006 | 12:42 PM
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Re: Valve spring question 977-16

Gary, he told you the spec already.... plus if you looked thru a Comp catalog it would be easy to find the rate and verify what he said was correct.

Bret
Old May 29, 2006 | 06:15 PM
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Re: Valve spring question 977-16

Another option you may want to consider is the Crane 99893-16. I've used these quite a bit, and actually just installed a set on my heads. I don't have Crane's listed specs in front of me, but mine were 145 lbs @ 1.800" and 380 lbs @ 1.200" with coil bind @ 1.070". They're a dual 1.440" without a dampner, and might work with your existing hardware.
Old May 30, 2006 | 10:52 PM
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Re: Valve spring question 977-16

Gary, I'm glad you enjoy being a **** ant over here in this forum.
Old May 31, 2006 | 12:07 AM
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Re: Valve spring question 977-16

wow-
Old Jun 1, 2006 | 08:00 AM
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Re: Valve spring question 977-16

Gary,

What kind of malfunction do you have? My post about you being a **** ant is directly what you are doing here anyways.... you argue with EVERYBODY on this forum about everything from your technical take on whatever it is you think you know about cams, heads etc... to bitching about double blind tests or some BS of the sort. I'm just sick of you being a complete moron and throwing out your bitchy attitude and bad karma all over here. Reguardless to if you are right or not you don't let ANYTHING go and keep the $hit storm alive with your constant nagging. What are you not getting in your personal life that you get over here acting like a complete ***? If you are not getting the attention from your old lady that you need, GET A DAM DOG! Dog's are great they love you even if you are a *** hole.

As for the springs...

Have you EVER run these springs? Do you have any concept of how they actually perform in the real world? I've run hundreds of sets of these springs on hyd roller lifters, on cast core camshafts, on STREET motors. That's with over 400# over the nose and with a 1.6:1 rocker too boot, so that's 650# on the lifter and cam core. That's FAR from the max for a good hyd roller lifter, but then again I doubt you even have a concept of how far away that is. Why don't you call up Advanced Induction and tell them they are doing it wrong as well because most of the sets of heads that I have seen from them have 977's attached to the top of them, so I guess everyone who has the ability to make power with LT1 heads has got it wrong don't they?

If you read the first post in this entire thread, he HAS THE 977 springs already in hand. I can obviously tell you don't deal with too many customers in this arena ever, because 95% of the time when a guy has the parts in hand that will do the job (especially valve springs) getting him to return or sell the ones he has and then buy the better choice is close to impossible. He has the springs and the parts to make them run, considering that the 977 and 987 that he is replacing run the same retainers and locators he has made a very good choice in picking the right spring to help with his valve float problem. I'm guessing you probably think that the 987 springs are perfect for what he is doing, all though he has valve float.

Is there a better spring choice? Yeah the 26918's would control the valve much better and not beat on parts as much, but that's obviously not the question or the solution IN THIS THREAD!

Now the last part....

Where the hell do you get off saying what I think?

I don't endorse degreeing camshafts in when they are installed?

http://web.camaross.com/forums/showt...ight=degreeing

I don't endorse checking valve spring pressures and setting correct installed heights during installation?

http://web.camaross.com/forums/showp...10&postcount=5

Hmm, yeah I don't recomend doing the install the correct way in any of those posts..... hell I even installed the springs and cam for BlackScreaminMachine from that first link so his setup would work properly.

On top of that... last time I checked a little extra spring pressure in the springs is not a bad thing considering that they can LOSE some of that pressure as they age pretty quickly. You ever check a set of ISKY tool room springs to see if they are not underrated? Go thru about 50 sets of $400 a set springs and see what you find THEN come back on here and run your mouth.

Gary, I get on YOUR case because I don't find your attitude and behavior on the forum fitting. I wouldn't accept someone acting like you do in my shop or at a local social car gathering or track so I don't let it fly here. Period. You try and run your BS to counter what people who do this work EVERYDAY know like the back of their hand.... with me, with Dennis @ AirflowDevelopment, with Lloyd. Take me out of that group and you still can't hold a candle to what Dennis and Lloyd know about ACTUAL head porting and motors.

You can think I really care what your personal opinion of me is, honestly I don't care but don't go on here spout off complete BS about your take on what I THINK. That's where I draw the line numb nutz.

Bret "All about Image" Bauer

Last edited by SStrokerAce; Jun 1, 2006 at 08:03 AM.
Old Jun 1, 2006 | 08:03 AM
  #11  
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Re: Valve spring question 977-16

I was about to say.. Bret was the one who suggested I check my cam with a degree kit
Old Jun 1, 2006 | 08:08 AM
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Re: Valve spring question 977-16

I have used the 977 springs with a HR cam and they worked fine.

Rich
Old Jun 1, 2006 | 08:25 AM
  #13  
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Re: Valve spring question 977-16

Can't let it die can ya?
Old Jun 1, 2006 | 01:16 PM
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Re: Valve spring question 977-16

I stepped over it? Maybe some of us on the board are just sick of how you act... I'm not one of those people to let that go without telling you so. Someone has to be the bad guy and do it and I don't have a problem being that guy. My own mother has called me a *** hole, so I'm pretty sure I am and whatever you want to call me is pretty much meaningless.

So you can keep flopping you dick out, just expect me to step on it when you screw up.

PS when does all this bickering help anyone around here?

Bret
Old Jun 1, 2006 | 04:47 PM
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Re: Valve spring question 977-16

A/G, were you a CO (Corrections Officer) or maybe a military NCO before you retired? I've know many of each over the years.

Just curious.



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