blower cam?

**Catmaigne** · 08-23-2015, 04:30 PM

Do you mean stock LT4 springs or the springs from the LT4 Hotcam kit? They're junk either way and cannot control heavy LT1 valves on a NA Hotcam motor. Add boost and it will be a disaster so you'll definitely need better springs and pushrods. If the rockers are from the kit then I'd run them (they are made by Crane).

**camarotony** · 08-24-2015, 03:45 PM

The rockers are chromoly comp cam rockers. What would you recommend for valve springs

**Catmaigne** · 08-24-2015, 04:15 PM

Are the rockers promags?

I would find out if those Brian Tooley springs with the tool steel retainers will fit. They seem like a great deal for $239 and the retainers are only marginally heavier than titanium. A Hotcam is pretty mild and you won't be running much boost with stock compression anyway so I think 150lbs @ seat would work, if not you could always shim a hair more. I know it says the guides have to be machined on the BTR site but the kit is rated for .650" lift and you are nowhere near that. I'd ask a tech if it's necessary (although I doubt it). There should be adequate retainer/seal/guide clearance with a Hotcam but it doesn't hurt to ask.

If not then hit up Lloyd. He can get you a decent deal.

**HellTeeOne** · 08-24-2015, 04:21 PM

XE 224/236 on a 114 lsa. .535/.555 lift

Proven cam that's been around for years. If you ever do a boost oriented build on the motor then I'd recommend a higher-lift version of the same cam.

**SSlowBoat** · 08-24-2015, 05:16 PM

Lloyd specd @Ltconvert a 226/239 .565/.587 112 LSA cam for blower. Thing sounds awesome and made 490 hp na on a engine dyno 383

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**camarotony** · 08-25-2015, 08:23 AM

Thanks for the help . I will use the lt4 hot cam for now and get a blower cam for the 383 I plan on building with a spare block I have.

**Rhett954** · 08-27-2015, 01:38 PM

I have the btr dual spring kit and it pulls to 6700. The guy that did my heads was very impressed with them. I am still on a stock bottom end.....

**NightTrain66** · 09-20-2015, 05:22 AM

BTR is going to start selling the DBL spring kit any day now. He was gonna start machining his own retainers since that was hold up before I believe.

BTR donated some stuff to the LTX shootout so I wanted to give them a plug and let you guys know he will have spring kits shortly.

I am a dealer for them and can sell their stuff at a good price or just call them for a good product at a good price.

Lloyd