I hear a lot of people saying that if you choose to use a t-rex cam you should upgrade your bottom end. I am wondering if the Thunder Racing packages included everything you need to have a very stable setup that will last.

- T-Rex Cam
- Crane Cams 144832-16 Valve Springs
- Crane Cams 144661 Titanium Retainers
- Crane Cams 144460-16 Hardened Seats
- 11-VS-UV5001-EO Valve Stem Seals
- Thunder Racing Stock Length Pushrods (7.400)
- Change to Comp Cams 63-26921-KIT Spring kit for $175 additional

Also wondering if it would be worth it to change to the comp cams 63-26921-KIT Spring kit for $175 additional.

Right now I have long tubes/cutout/flowpac/12 bolt/4.10 gears and this is not a daily driver but I want it to be able to take some abuse without breaking.

 

if i were you i would back off the cam just a little bit. i've heard NOTHING but bad things about the t-rex cam....it seems like we've found the reasonable limit for the size of LS1 cams....

first of all, i KNOW you have to cut valve reliefs into your pistons if you have aftermarket heads, i'm not positive about stockers. secondly, i've been hearing that 7.350 " pushrods are the way to go with that cam.

I have a friend who collapsed a lifter with a t-rex and 7.400s....the cam hit the roller, broke it off (Comp R lifter), the roller pin backed out and notched metal out of the bottom of the lifter bore. the lifter then bounced around and killed just about everything...the block, cam, crank etc. etc etc. are all toast.

honestly, if i were you i wouldn't go near that cam. it's just a little too radical. maybe look into the G5X2 or G5X3 or something. those will be a LITTLE smaller and still make excellent power.

 

Or the Texas Speed 231-237? I myself agree that I wouldn't go with a T-rex unless I was putting it in a built, serious motor. Which mine isn't.

 

I personally think it is just a little to much cam for your average person, but that is strictly a personal opinion.