Best Cam for 4.8 L for significant hp gain?

[Frenchy]

4.8/5.3 same rules apply. Look at your block, it's even stamped 4.8/5.3

[jmgak47]

I would go with a XR265HR 212/218 .522/.529 114+2 or a similar custom grind. Without a converter and it being a 4.8L you don't want to over cam it.

[ImportThis]

Comp 269LR-HR12. Same cam in running in my 5.3 crew cab. Makes good torque, even better in a 4.8. But you will need a higher stall than factory, I'm running a 2800.

[Slow04xcab]

325 at the crank I'm guessing. Of your not wanting to run a stall the 212/218 mentioned earlier would do good. I ran that in my 5.3 for a while without a stall and had very good drivability.some good 1 7/8 headers 3 inch exhaust with y or h pipe. Now the most bang for your buck is going to spray! The stock bottom end should take 125 pretty easy if tuned correctly.

[Gus]

Custom ground version of Comp 54-450-11 which is 206/212 @.050, Have it ground at 112LSA and you could even add few degrees of center line advance. It would sound good and actually make power without a converter or gears.

[Cole91]

Thanks for the advice guys !!! When would I need to change the pushrods and springs ? What im trying to say is whats the most aggressive cam without installing the pushrods or over camming the motor ? I love the sound of an aggressive cam and if i can get some serious hp gains that would be awesome.

Thanks again ! any more guys want to chime in?

[kerrige]

Yes you need new springs and hardened pushrods. The HU1 from sd parts is a great option 212/216 low lift I believe or anything under 220 duration should be fine. A 212/218 is great or the isky triple 12. Good mild cams. A proper tune cam and exhaust will get you around 325 to the flywheel.

[GMC15006.0]

what about a lq9 6.0 stock going with long tubes first. looking for best order to upgrade?