thinkin of a thumpr cam
03-28-2010, 08:35 PM
#1
TECH Fanatic
Thread Starter
iTrader: (11)
Join Date: Mar 2009
Location: Machinegun Valley KS
Posts: 1,579
Likes: 0
Received 2 Likes
on
2 Posts
thinkin of a thumpr cam
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
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
03-28-2010, 09:54 PM
#2
Teching In
iTrader: (5)
Join Date: May 2007
Location: H-Town
Posts: 48
Likes: 0
Received 0 Likes
on
0 Posts
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?
03-28-2010, 10:47 PM
#3
formerly Stroked-DSM (11/24/2010)
iTrader: (3)
Join Date: May 2009
Location: Florida
Posts: 386
Likes: 0
Received 0 Likes
on
0 Posts
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.
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.
03-28-2010, 11:41 PM
#6
Teching In
iTrader: (5)
Join Date: May 2007
Location: H-Town
Posts: 48
Likes: 0
Received 0 Likes
on
0 Posts
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.
Trending Topics
03-29-2010, 01:41 PM
#10
Staging Lane
iTrader: (1)
Join Date: Jun 2009
Location: Glennville, GA
Posts: 93
Likes: 0
Received 0 Likes
on
0 Posts
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
chevrolade just ran the cam with no stall an 3.23s iirc
Last edited by mwbrannen; 03-29-2010 at 01:50 PM.