Yep call Texas Speed

 

 

Look for an engraved number in the rocker area of the head. Then give them a call with that number.

 

 

No there should be a hand engraved number somewhere in that area of the head.

 

and then *call*...not email.

 

 

Both are better than mast. Seen a LS3 Mast headed 440 LSX at LS Fest. It rained like ****.... but that's not my problem.

Mast is a RIP off....
https://ls1tech.com/forums/generation-iv-internal-engine/1891305-mast-black-label-head-failure-20k-motor-destroyed-need-help.html

 

I did the same thing I bought a used set the only way to tell is by getting the hand engraved number from under the rocker arm pedistal Idk if its on both heads or just one. Then call texas speed they work better that way trust me lol. You can barely see it in the pic because its so fine and the flash hid it. I believe it was a 5 digit number.

 

Can you measure the intake valve size? 2.02 would be a stage 2 head.

 

 

You tell me.... You know it all.

 

 

thats pretty fast. Atkins car ?

 

 

What car you referring to ?

 

 

Been on Google looking. I'm starting to think you need a diaper on cause you full of **** cause I see nothing. A link or a picture of the car would be helpful.