Toys4Life C5

With the addition of the A&A supercharger, spinning the stock engine to 6500 RPM'S on stock valve springs is not a good idea.

After careful thought, I decided to upgraded to LS6 springs. While I was at it, I made a detailed video of the process in case you were wondering what all is involved.


Thanks,
Ken

Vetteman Jack

tabbruzz

Nice.......I already did mine, but I saw all your other videos so why not.....The tool I bought to compress the springs sucked but you had a nice one. The only thing I did different was I turned the engine to TDC on each cylinder as opposed to the air hose method. With my luck I would have a power outage...all good though....

Toys4Life C5

I just did the drivers side, Just have to remove the fuel line and then the valve cover can come off. Took about 1/2 the time as the passenger side as with anything, you get the hang of it.. Clutch is next....

tabbruzz

nice....good luck

Smoken1

Why didn't you upgrade the push rods while you were in there?

Toys4Life C5

Good question and I should have put it in the video but I forgot.

This is a 2003 LS1 with 85k miles and I have been revving it to 5900 for 5 years and recently to 6500 for about 4 months (when I added the supercharger).

I have read a lot about the stock push rods being weak and bending so I rolled each of them on a flat surface and all of mine were perfectly straight.

The upgrade to LS6 valve springs is not a huge increase in spring rate (over stock) and I believe the LS1 and LS6 pushrods are the same part # so I am hoping they will be fine. If not, I will replace them. Also, some have said it is good to have them bend if there is an incident vs a super strong pushrod taking something else out.

foggy

That theory on the pushrods is wrong... You always want as close to ZERO Deflection as possible in your valvetrain..
IF you still have this project apart;.... Replace the factory pushrods with some aftermarket upgraded units !!!You don't have to go crazy with
stock like cam profile, but the stock ones are OK for bone stock applications.. You are beyond that with your SC

Toys4Life C5

First off, I appreciate your taking the time to provide your opinion with regards to my setup.

Since-

• I have the stock cam and;
• the LS6 shares the same pushrod as my LS1 and;
• the LS6 comes with a more aggressive cam and higher RPM limit

I am not understanding what specifically it is about my supercharged setup that leads you to believe I need stronger pushrods. I needed the LS6 springs for the increase from 5800 to 6500RPM AND because the boost somewhat tries to hold the intake valve open (keeping it from closing) so you need a little more spring to close it. I am not saying you are wrong, I am simply asking for more specifics as to what aspect of my setup exceeds the stock pushrods limits.

Thank you in advance.

grantv

This is the scary part of watching YouTube videos, no way to know if someone really knows what they're telling you is right...

Toys4Life C5

Agreed. If it is an engine component or something unfamiliar, I will typically consult a manual and watch a couple of the better videos I can find. If I find a discrepancy, I hone in on the discrepancy until I am satisfied.

Toys4Life C5

UPDATE:
Been revving to 6500 RPM's for over a year since the LS6 spring swap. Not saying the parts selection and procedures I went with are the only way, but I can say it has worked for well over a year with no issues.

If something was going to fail (like stock pushrods) I think they would have by now.

Toys.