Springs for BTR Stg 2

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Jul 26, 2018 | 07:45 PM

jlangley

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From: Langley BC

Springs for BTR Stg 2

I'm doing a budget LS2 build and installing a BTR Stg 2 cam. 227/234 113 +2 .613/.576, stock 243 heads. What springs should I use?

I'm thinking about the nascar used PSI 1511ML. Thoughts?

I have some scorpion rockers that I was thinking of using. Should I run them or do a trunnion upgrade on stock rockers instead?

Thanks

Jul 27, 2018 | 04:58 AM

KW Baraka

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From: S.A., TX

Quote:

Originally Posted by jlangley

I'm doing a budget LS2 build and installing a BTR Stg 2 cam. 227/234 113 +2 .613/.576, stock 243 heads. What springs should I use?...……….

I can't speak for what YOU should use....but I would use these:

https://www.racingsprings.com/index..../category/403/

And I would also go with a trunnion upgrade on the stock rockers over the scorpions.

KW

Jul 27, 2018 | 04:59 PM

00pooterSS

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From: Dallas

Quote:

Originally Posted by jlangley

With those springs you're running up on the edge of their capability, you've got quite a bit of cam for a single beehive to handle. The BTR platinum dual spring kit would probably offer better valve control. ESPECIALLY if you consider using those scorpions. The scorpions will have a higher nose weight than the stock rockers and you'll need more spring to keep that in control. Also if you go with a dual spring instead of a single, if a spring breaks you still have another spring on that valve to help pull the valve up and out of the way of the piston. Some people really like having that little added security.

I vote for bushing trunion upgrades on the stock rockers, don't do the bearing style, there's too many people having issues with them wearing out quickly.

Not sure when you got your scorpions but a while back there was a rash of them breaking.

I would call BTR and ask them the best spring kit for THEIR cam.

Jul 28, 2018 | 06:34 PM

jlangley

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From: Langley BC

Thanks for the responses. I'm sure BTR will recommend one of their dual spring kits. Although I'm a novice I know that my valvetrain is not the place to try to save money. I guess I was just hoping to have someone tell me what I wanted to hear Lol

As for the rockers, theyare almost brand new, just dyno time on them, and look perfect. I thought there wasan issue with running stock rockers at >.600 lift? Does the trunnion kit change this? I assumed it was a scrubbing/side loading thing due to geometry.

Jul 30, 2018 | 11:55 AM

00pooterSS

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From: Dallas

Quote:

Originally Posted by jlangley

From what I've read it's around .630

You'll be fine with your stock rockers, the trunion upgrade is just to keep from having the stock bearing trunions take a dump inside the motor. It keeps the same geometry.

You could also ask BTR, they will likely recommend the stockers over the scorpions.