well been doin some looking around at cams and seeing what everybody else has been running and would like to know if anybody is using this cam I found a vid on youtube with a guy running this cam sounds awesome to me im not looking for speed im looking for mean would like to know if z06 yellow springs could work on this application or not your guys input would be good, thanks in advance


can video
http://www.youtube.com/watch?v=NeQ0jk-7Uzc

Thumpr™ GM LS Series (LS1, -2, -6, -7) 1997-2008

APPLICATION CAMSHAFTS

RPM OPERATING RANGE
2000-6400

DURATION
ADV.
@ .050”

IN. EX. IN. EX.
275 295 219 233

VALVE LIFT @ 1.5:1
IN. EX.
.553 .536

LOBE SEP. ANGLE
109

 

They sound great but dont make much power. I've observed a few folks that have bought them, posted impressive idle vids, than a month later the cam is in the classifieds. If your going to spend the time and money to swap cams why not get a cam that sounds like that and makes power?

 

I have been looking at these cams for a little while as well, and there are mixed reviews all over the place. Some people love them, and some people hate them. They have been known to be more of a "show" cam rather than a performance cam, but in some cases have produced significant gains.

I love choppy idles, so the specs on these cams are really appealing, but I want my truck to pull like a train up top, so a custom grind cam may be in order.

 

Dude, freight trains are SLOW!!! Like 45 mph top speed.......















lol

 

^ got jokes...lol. trains pull HARD SON!

 

In my mind the problem is that a thumper cam makes your truck sound like a 10 second drag strip warrior. It must suck to then go to the track and run a 16. Its kind of like having a nitrous purge kit without running nitrous. You might be able to impress some people but if you cant back it up whats the point? They do sound good though, I'll give you that.

 

I guess you could always throw on a 300 shot & get it done......

 

IMO, the thumpr cams are for street rods with GENIII engine swaps that want to sound like old school muscle cars...there are better more efficient cam grinds out there...

 

yeah thats Chevrolades' truck. Do a search on here and check out what he says about it. I think he said it sounded good but didnt perform like expected.

 

im running the 219/233 and i love it! it all depends in the tuning and set up. you will need atleast a 3k stall and gears to get the most out of this cam.. im runnin a 3k stall an 4.56s and im happy with it.. im ready to dyno it to see exactly what im laying down with this set up

chevrolade just ran the cam with no stall an 3.23s iirc