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

putting 1.6 rockers on stock springs?

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Old 02-05-2009, 12:21 PM
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Default putting 1.6 rockers on stock springs?

can anyone tell me if i will be getting and coil bind or valve float at 6500 rpms on my stock cammed 97 lt1 trans am? i would appreciate the help
Old 02-05-2009, 12:41 PM
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at that rpm you will get valve float especially with 1.6s you will also get coil bind and eventually break a spring or worse.
Old 02-05-2009, 12:51 PM
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stock springs when NEW are only 85lbs on the seat, the Lt4 springs are 100lbs on the seat. my feeling is instead of just stepping up to the next spring like the Lt4 one should go to a much better spring kit like this
https://www.patriot-performance.com/...&cat=52&page=2

i got a bunch of crap about this topic and that this kit was overkill but i feel it is right on the money gives room to expand.
Old 02-05-2009, 12:53 PM
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Originally Posted by 96lt1m6
stock springs when NEW are only 85lbs on the seat, the Lt4 springs are 100lbs on the seat. my feeling is instead of just stepping up to the next spring like the Lt4 one should go to a much better spring kit like this
https://www.patriot-performance.com/...&cat=52&page=2

i got a bunch of crap about this topic and that this kit was overkill but i feel it is right on the money gives room to expand.
+1. And get NSA rr's, guideplates, and chromemoly pr's. Then when the time comes for a cam, all you have to do is slide it in, and done!
Old 02-05-2009, 01:00 PM
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whoa u said you already have a CAMMED t/a and your running around with stock springs still!?!?!
Old 02-05-2009, 01:02 PM
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Originally Posted by ThreeHonks
whoa u said you already have a CAMMED t/a and your running around with stock springs still!?!?!
Wow, I didn't even catch that. Better upgrade quick!
Old 02-05-2009, 01:05 PM
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stock springs
upgraded cam
1.6 roller rockers


you are about to spend a bunch of money if you continue to drive your car especially at the RPM you described!
whats you set up now (specs)?
Old 02-05-2009, 01:07 PM
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your supposed to do springs FIRST! then everything else. i have 918's and really like them. the patriot kit looks really good tho. def upgrade those ASAP!
Old 02-05-2009, 01:14 PM
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Oh boy. He said "stock cammed 97 LT1."

He has a 97 LT1 with a STOCK CAM. Even I could have figured that out. Did you think a cammed car is considered stock? Cmon guys...

If you just want to run 1.6 rockers alone, then the LT4s are PLENTY enough and cheap. If you want to run a larger cam, then the LT4s won't cut it. Might want to look into the Compy 918s or the Crane 10308 kit.

Or if you have money to burn, take a look at the Patriot kit.
Old 02-05-2009, 01:16 PM
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Originally Posted by RamAir95TA
Oh boy. He said "stock cammed 97 LT1."

He has a 97 LT1 with a STOCK CAM. Even I could have figured that out. Did you think a cammed car is considered stock? Cmon guys...

If you just want to run 1.6 rockers alone, then the LT4s are PLENTY enough and cheap. If you want to run a larger cam, then the LT4s won't cut it. Might want to look into the Compy 918s or the Crane 10308 kit.

Or if you have money to burn, take a look at the Patriot kit.
Doh!
Old 02-05-2009, 01:19 PM
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Originally Posted by RamAir95TA
Oh boy. He said "stock cammed 97 LT1."

He has a 97 LT1 with a STOCK CAM. Even I could have figured that out. Did you think a cammed car is considered stock? Cmon guys...

If you just want to run 1.6 rockers alone, then the LT4s are PLENTY enough and cheap. If you want to run a larger cam, then the LT4s won't cut it. Might want to look into the Compy 918s or the Crane 10308 kit.

Or if you have money to burn, take a look at the Patriot kit.
haha my bad... im doing exactly what you suggested since i have a stock cam also and will be just running 1.6 til I put a cam in, then I will switch springs again. LT4 springs are very affordable too
Old 02-05-2009, 01:24 PM
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out of curiosity why would you swap springs so many times? the amount of time and labor to do this multiple times offsets the cost of doing it right the first time. who would be burning money at this point?
Old 02-05-2009, 02:05 PM
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sorry for the confusion on that, i did mean it was the stock cam. i really wanted to switch to nsa rockers with guide plates but i didnt know what all i needed to do it and i also heard there is some machine work required to put guide plates in?
Old 02-05-2009, 02:11 PM
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Originally Posted by 96lt1m6
out of curiosity why would you swap springs so many times? the amount of time and labor to do this multiple times offsets the cost of doing it right the first time. who would be burning money at this point?
I only need LT4 springs at this point and dont want to run such a stiff spring with the stock cam, plus im not entirely sure what im going to do. This setup is just temporary until next winter, no reason to spend $250-300 on new springs ans components when I might not even use them in the future anyway
Old 02-05-2009, 02:21 PM
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Originally Posted by ThreeHonks
haha my bad... im doing exactly what you suggested since i have a stock cam also and will be just running 1.6 til I put a cam in, then I will switch springs again. LT4 springs are very affordable too
oh, i was just going by your previous statement above
Old 02-05-2009, 02:36 PM
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Originally Posted by kalebm22
sorry for the confusion on that, i did mean it was the stock cam. i really wanted to switch to nsa rockers with guide plates but i didnt know what all i needed to do it and i also heard there is some machine work required to put guide plates in?
nope no machine work on guideplates. i went with trick flow GP with trick flow hardened pushrods as well. just need new studs. but youd need them anyway
Old 02-05-2009, 02:43 PM
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Originally Posted by 96lt1m6
out of curiosity why would you swap springs so many times? the amount of time and labor to do this multiple times offsets the cost of doing it right the first time. who would be burning money at this point?
The OP never mentioned anything about doing a cam swap, so why would I provide advice otherwise? He asked about 1.6 rockers on stock valve springs, so that's what I provided.

OTOH, if he plans on doing a cam in the future, why would you go through the hassle of installing springs and rockers the first time around when you can do it all at once? And unless you're SURE about what grind you're going to go with, you don't even know if the springs you choose now will suffice.
Old 02-05-2009, 02:45 PM
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Originally Posted by SoxXpupPeT
nope no machine work on guideplates. i went with trick flow GP with trick flow hardened pushrods as well. just need new studs. but youd need them anyway

can u give me the part numbers to those pushrods and guide plates?
and will any 7/16 studs work or do i need a certain set?
Old 02-05-2009, 02:55 PM
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Originally Posted by kalebm22
can u give me the part numbers to those pushrods and guide plates?
and will any 7/16 studs work or do i need a certain set?
IMO, go with the GM guideplates. They are the same plates GM used on the LT4 GS Vette - designed specifically for use with the LT1/4 motor. Other people have mentioned that different GPs can alter pushrod angle and rub against the plate. They are part number 14011051 (need 8). Would buy again if I had to.

Use ARP 7/16" rocker studs for SBC 134-7103 or the HD version - 234-7202. I am using the 7103s.
Old 02-05-2009, 03:24 PM
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If going with guide plates...My $.02 is the ISKY adjustable ones.

GM guide plates will wear if used with hardened push rods



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