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

1.6RR on Stock LT1??

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Old 06-09-2009, 02:03 AM
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Question 1.6RR on Stock LT1??

So can i put 1.6RR on a stock LT1 without changing the springs or anything else? if i do what could happen?
Attached Thumbnails 1.6RR on Stock LT1??-img_0058.jpg   1.6RR on Stock LT1??-img_0056.jpg  
Old 06-09-2009, 02:05 AM
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No...
Old 06-09-2009, 02:10 AM
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You can...but springs are recommended. I've done it several times with no problems but most people will advise you to at least upgrade to the LT4 springs for security reasons.
Old 06-09-2009, 03:55 AM
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I did and had no problems for several years. I wasn't reving it to the moon though. As said before it would be a good idea to upgrade your springs, now your gonna compress already worn springs a little further. As far as what could happen most likley thing would be valve float at higher rpm costing power, worst case is a spring breaks and drops a valve the rest is history. It looks like you've already put em on!
Old 06-09-2009, 06:37 AM
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Considering that LT4 springs are almost cheaper than a tank of gas, it would be stupid not to install them with the 1.6 rr's. The stock springs will be very close to coil bind and if that happens, the valve will drop and you will be replacing the motor as a result of going cheap. But its your motor.
Old 06-09-2009, 09:09 AM
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Roger that i will purchase some good springs! i have a cam i want to install in the near future its the CC503.
Old 06-09-2009, 12:25 PM
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i have a set of crane gold race rockers, 1.6 ratio, sa, 3/8th stud, that i used on my cc503 setup for sale, id let them go cheap, send me a pm.
Old 06-09-2009, 01:03 PM
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Originally Posted by wrd1972
Considering that LT4 springs are almost cheaper than a tank of gas, it would be stupid not to install them with the 1.6 rr's. The stock springs will be very close to coil bind and if that happens, the valve will drop and you will be replacing the motor as a result of going cheap. But its your motor.
+1

Originally Posted by 94CamaroZ28SS
Roger that i will purchase some good springs! i have a cam i want to install in the near future its the CC503.
Nice. I have the same cam and I love it.
Old 06-09-2009, 02:02 PM
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You can put just 1.6 RR on a stock cammed car and it will run. But given the age and ratings for the stock spring I especially wouldnt recommend them now. Doing springs is not a hard job. Its a PITA but not hard. Plus if you do a cam with in a year or so that meets the requirement, its one less step if you go up on the bump stick.
Old 06-09-2009, 03:14 PM
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All good advise already given, I'd recommend new springs as well, as stated they are not expensive, good insurance and can be done in a couple hours taking your time and that's including hooking up the electric bump start to set the lash, etc.
Old 06-09-2009, 04:53 PM
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If youre gonna do the cam later at least put a set of comp 918's on it now. Comp pn 26918
Old 06-09-2009, 05:39 PM
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alright how hard is it to change the valve springs whith the motor still in the car and how do i accomplish this task?
Old 06-09-2009, 05:43 PM
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Originally Posted by 94CamaroZ28SS
alright how hard is it to change the valve springs whith the motor still in the car and how do i accomplish this task?
Either get the crane valve spring tool for a LT1 or get Tim's valve spring tool.

You'll want to get new valve seals and hardened pushrods.

This will give you an idea of what you have to do:

http://shbox.com/ci/valve_spring_swap.html
Old 06-09-2009, 05:58 PM
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Originally Posted by ss.slp.ls1
Either get the crane valve spring tool for a LT1 or get Tim's valve spring tool.

You'll want to get new valve seals and hardened pushrods.

This will give you an idea of what you have to do:

http://shbox.com/ci/valve_spring_swap.html

thanks a lot guys thats why I keep coming to this site you guys are awesome!

I have another LT1 Engine i got my 1.6RR off of they are stamped 1.6 26 05 what RR are these?

Also the engine has different valve springs how can you tell what brand and what they are?
Old 06-09-2009, 06:29 PM
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Originally Posted by 94CamaroZ28SS
thanks a lot guys thats why I keep coming to this site you guys are awesome!

I have another LT1 Engine i got my 1.6RR off of they are stamped 1.6 26 05 what RR are these?

Also the engine has different valve springs how can you tell what brand and what they are?
Post a picture. You'll probably want to pull a couple springs off and test them with spring test gauge.
Old 06-09-2009, 06:40 PM
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Originally Posted by ss.slp.ls1
Post a picture. You'll probably want to pull a couple springs off and test them with spring test gauge.
yeah i could tell they were different then my stock springs. i will post a picture when i get home in a few hours.

where can i pick up a spring test gauge?
Old 06-09-2009, 07:14 PM
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I have 1.6's with stock springs, but I only occasionally(sp?) rev to 6k, I try hard not to go over that. Springs will be upgraded later this year when the 227 goes in

Last edited by Bowtie4life; 06-09-2009 at 07:36 PM.
Old 06-09-2009, 07:18 PM
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Originally Posted by Bowtie4life
I have 1.6's with stock, springs, but I only rev to 6k, I try hard not to go over that. prings will be upgraded later this year when the 227 goes in
Even then you are walking on thin ice. I wouldn't if I were you.
Old 06-09-2009, 08:33 PM
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The stock springs are maxed out with stock frickin rockers past 5800 rpms. I dont know why anyone would consider putting 1.6's on top of them and thinking it's ok.
Old 06-09-2009, 09:50 PM
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does anyone know what springs these are?
Attached Thumbnails 1.6RR on Stock LT1??-img_0051.jpg   1.6RR on Stock LT1??-img_0055.jpg  


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