CKnight18

I am looking at the big ***** thumpr cam kit from comp cams. I need info on if this will work on the ls4 and if I need anything else. Or if the kit contains everything I need. Please let me know. I need help on This. Cam kit link below!

http://www.compperformancegroupstore...ory_Code=ThKHR

rottonj

iTrader: (4)

This says

Fits '58-'021 262-400 cid Chevy Small Blocks2

Is that what you have?

CKnight18

I have 5.3l. 325CI

rottonj

iTrader: (4)

What year?

CKnight18

2007 impala SS

rottonj

iTrader: (4)

Hmm. Well that isn't 1958 to 2002 . Best keep looking.

98CayenneT/A

If you delete DoD you will have many more cam options.

CKnight18

Yes I am planning on doing the dod delete when I do a cam

CKnight18

I just want some help finding the biggest cam I can and only having to replace the Cam, Lifters, Valve Springs, Retainers, Locks, Seals, & Timing Set

98CayenneT/A

Hopefully someone with more Ls4 knowledge will pop in here, just trying to give ya ideas.

If you do the DoD delete and 3 bolt cam gear sprocket conversion, also different intake? then you can run any cam made for a Ls1, Ls2, Ls6 which would make your options unlimited.

rottonj

iTrader: (4)

For sure he will be installing an intake and injectors with rails when the heads come off, bigger throttle body, headers, high stall converter as all are a must for use with the biggest cams.

CKnight18

Alright thanks for the help. That will help me choose a bigger one. I am planning on doing the ls6 intake on it

CKnight18

Yeah I'm going to get a set of Doug thorly headers. Bigger injectors.

CrimsonGXP

As already stated, once you delete all the dod parts any ls cam will fit. You'll need a different intake and full exhaust for sure. The specs of that cam are extremely large for a 5.3. In a street driven 5.3 I feel like low 230s duration is about as large one should go.

mcojettech

I believe the 2007 Ls 4 monte ss cam is
.482 / .490 cheapest bang for the buck is comp cams roller rockers sku # 19025-16 $471.12 for the set. They are 1.82:1 @ tickperformance. Effectively bringing valve opening to .542 /.550. Valves will hit the pistons at .600. Holley tall valve covers are needed for clearance pn 241-111 $219.95 / pair with hardware. Also a nice hard set of pushrods from summits pn1457325 $ 104.97 / set. Save your money and don't do an intake / throttle body mod unless you plan on turning crazy rpms.
Also with the MAS , just cut away the webing with a razor blade being careful not to touch or Nick the sensor wires. Your car will be drivable to the dyno / tuner but will run like crap on the way.also our factory injectors have a wide flow range so just to give ya stuff to think about. Hope this helps.

Jstill84

iTrader: (1)

Check out BRIAN TOOLEY RACING... call them and tell them what you want and what you have they can custom grind you a cam for your needs. Also they sell AFM/DOD Delete kits for our LS4's

mcojettech

Thanks for the insight on custom cam grinds. As for the dod delete kit I'd suggest using the Chevy kit # CMB-09-0026 at summit for $390.52.