I have a MS4 cam from Texas Speed. It is a 239/242, .649"/.609" with a 111 LSA. I wanna run this is a 5.3L with head work of course. I am getting the springs and retainers and everything from Texas Speed also, but wanted to know if anyone else has put this cam into a 5.3L so I know what Im getting myself into. Thanks for all the help yall.

 

I put a MS3 in a 5.3 before, . . . but not quite as much duration/lift as the MS4

. . . it sounded good . . .

 

I know its gonna sound good, but I needed to know if PTV clearance is going to be an issue with the stock 5.3L bottom end. I was told it was in the LS1 but I believe the LS1 has flat top pistons and Im pretty sure the 5.3L has dished pistons, so will i have any issues with it?

 

thats way too much cam for a 5.3...

 

If it has worked in a ls1 it should work in the 5.3. 5.3's have flat tops also, the 4.8's are the dished ones, the deck heights are the same as a ls1 IIRC... It will just be a bit of a pig to tune, unless your running a huge verter..

 

wrong john, the 5.3 has dished pistons, 4.8 has flat.


noob

 

He's right John. The 4.8 and the 5.3 L33 share flat top pistons.

 

UHHH HAAA, you know what I thought about for a min after I posted it, got it f^&Kd up, bass ackwards... My bad

 

Yea LM7 5.3's 2006 and older all have dished... right? Cuz then there should be no clearance problems...

 

I'm pretty sure that it'll work . . . but what are your goals for this setup? The power band for this cam is 3400 - 7200 . . . you're going to need more than good heads to run it . . . built trans, big stall, 4.10, better than stock truck intake, bigger injectors . . . the list goes on