Another Successful "Want More Torque" Cam Swap
#21
TECH Addict
Finally some correlation between how the cam is really used and the profiles....I can see it now..."Oh yeah, well my cam is smaller than that, I just put in a 208 218 on a 117"........
#22
TECH Fanatic
Thread Starter
iTrader: (9)
Join Date: Feb 2002
Location: West Lafayette, IN
Posts: 1,061
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for the kind words, everyone. I'll be sure to post the dyno results as soon as I return.
I do have a soundclip of the car, but it's on my other PC. I'll post it up a little later tonight.
Josh
I do have a soundclip of the car, but it's on my other PC. I'll post it up a little later tonight.
Josh
#23
10 Second Club
iTrader: (11)
Join Date: Feb 2003
Location: Bridge City, TX
Posts: 1,437
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by SUX2BU
Sounds like you made the right choise for your goals.
Me i just use my car as transportation and only care if its fast at the track. so i'm gonna ove ther Trex. But yeah post up the dyno results when you get'um.
Me i just use my car as transportation and only care if its fast at the track. so i'm gonna ove ther Trex. But yeah post up the dyno results when you get'um.
Last edited by JaSSoN; 04-26-2006 at 09:35 PM.
#24
11 Second Club
iTrader: (14)
Originally Posted by JaSSoN
Im with you on this. Im tired of seeing dyno sheets and requests for dyno sheets, talk of more torque cams and torque down low. None of these guys talk about track times. They talk about valve events and lobe separation. Wheres the track times. Who cares what it dyno's if it cant run at the track. Whats the point. My car never sees under 5800 rpm on the shifts. Why would anyone car about any thing under where their car shifts at? Dyno talk has gotten out of hand on this board. People change cams for 15-20 rwtq at 3500 rpm, thats crazy.
So, to each his own. As far as my cars power, i only care that it goes real fast when my right foot hits the floor. Anything in between is just to get me from point A to point B.
BTW: Its worse on M6 cars. My 5100 stall provides all the torque i need.
#26
Originally Posted by brad8266
Well remember that there is much racing to be done on a dyno and thats what matters to a lot of people, not actually how quick the car is.
#27
TECH Fanatic
Thread Starter
iTrader: (9)
Join Date: Feb 2002
Location: West Lafayette, IN
Posts: 1,061
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by JaSSoN
Im with you on this. Im tired of seeing dyno sheets and requests for dyno sheets, talk of more torque cams and torque down low. None of these guys talk about track times. They talk about valve events and lobe separation. Wheres the track times. Who cares what it dyno's if it cant run at the track. Whats the point. My car never sees under 5800 rpm on the shifts. Why would anyone car about anything under where their car shifts at? Dyno talk has gotten out of hand on this board. People change cams for 15-20 rwtq at 3500 rpm, thats crazy. Im remember when there used to be more talk about racing on this board. No offence to you Josh.
I think you're not seeing any track times because most of the people who make a switch to a cam of this nature are doing so because they don't go to the track very often. I visit the track once or twice a year, so I'm not as concerned with track times as I am a nice, flat torque curve, which can only be confirmed on a dyno.
What works well on the track, where, as you say, the RPMs may never dip below 5800, doesn't work so well on the street. As SUX2BU said, it's just more fun to drive around town with a smaller cam that provides more low and midrange torque than it is with a max-effort grind that makes all of it's power above 4500 RPM.
Josh
#28
TECH Fanatic
Thread Starter
iTrader: (9)
Join Date: Feb 2002
Location: West Lafayette, IN
Posts: 1,061
Likes: 0
Received 0 Likes
on
0 Posts
Okay, guys, as promised, here's a sound clip of the car: http://www.expeditiouss.com/idle.wmv
Please right click, save as--my $3/month hosting package can't handle a lot of streaming requests.
Josh
Please right click, save as--my $3/month hosting package can't handle a lot of streaming requests.
Josh
#30
TECH Apprentice
iTrader: (9)
Join Date: Sep 2005
Location: Etowah
Posts: 351
Likes: 0
Received 0 Likes
on
0 Posts
Well another thing about the track times. We just don't have a 1/4 track here or close for that matter, unless you count interstate 40, 240 and 26, then we are roll racing. For the most part around where Josh and I live, thats the only time a cam only street car will see racing speeds over 100mph. There just isn't a straight road to be found. So that takes away alot from the T-rex and how much fun it actually is to drive. It just isn't. Like Josh, my car is not or never will be a drag car. Its meant for fun. Thats it.
#31
TECH Resident
iTrader: (1)
Join Date: Jul 2004
Location: Henderson, NC
Posts: 854
Likes: 0
Received 0 Likes
on
0 Posts
yeah I dont think my car would last long if everytime I left my garage I was going along at 5800+ rpms Not to mention all the tickets I would get for speed or noise violations. Hell in some areas I might eventually get my *** beat or shot at
where's the DD love? )
where's the DD love? )
#32
TECH Junkie
iTrader: (3)
Join Date: Nov 2001
Location: TEXASS
Posts: 3,202
Likes: 0
Received 0 Likes
on
0 Posts
What everyone has failed to mention is that I bet you arent giving up much...IF ANY compared to the very large cams even in the higher rpms! It just seems to me the larger cams are not making any higher peak numbers as well.
#33
11 Second Club
iTrader: (14)
Originally Posted by cantdrv65
What everyone has failed to mention is that I bet you arent giving up much...IF ANY compared to the very large cams even in the higher rpms! It just seems to me the larger cams are not making any higher peak numbers as well.
#34
On The Tree
iTrader: (3)
Join Date: Jul 2005
Location: St. Louis, MO
Posts: 171
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by cantdrv65
What everyone has failed to mention is that I bet you arent giving up much...IF ANY compared to the very large cams even in the higher rpms! It just seems to me the larger cams are not making any higher peak numbers as well.
#36
TECH Addict
iTrader: (16)
Join Date: Jul 2004
Location: Nevada, TX
Posts: 2,218
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Ksett
This is true, but those large cams also perform better at the track. Someone leaving at 4k+RPMS does not need low end torque.
Brandon
#38
TECH Senior Member
iTrader: (7)
Even at the track, where the torque is usefull depends a lot on the supporting mods. An A4 with a 4000 stall doesn't need worry much about 3600 rpm and below. On my old car all power was built around 6800+ rpm shifts.
Now I'm an M6 with a stock clutch and a 10 bolt I do not feel that I have the luxury of 4000 rpm clutch dumps. Mid range torque would help me.
For a lot of people who see the track a few times per year, trading .1 of ET for car that slices through traffic the other 250 work days per year is worth it.
Now I'm an M6 with a stock clutch and a 10 bolt I do not feel that I have the luxury of 4000 rpm clutch dumps. Mid range torque would help me.
For a lot of people who see the track a few times per year, trading .1 of ET for car that slices through traffic the other 250 work days per year is worth it.
#39
UNDER PRESSURE MOD
iTrader: (19)
Something else that hasn't been mentioned is the weight of our cars. I know I'd love to have a few more ft/lbs of torque from 2000-4000 since that's where I spend most of my driving time and the fact that my car is a plump 3800lbs with me in it.
I've got a TR224/224 on a 112lsa and love the car. I make 430hp and 400ft lbs of torque but make that peak torque at 4400 rpm. Now if my car was a Z06 'vette and weighed 500lbs less, that would be a different story. I'd probably go with a bigger cam to get more top end out of the car since 400 ftlbs of torque in a 3300lb car feels a lot more powerful than in a 3800lb car.
My ideal combo would be to go with a 402ci ls2 with a very mild cam and make 475hp and 450ft lbs of torque. That would be really fun on the street and still be able to run low 11s at the track with adequite traction.
It's all about meeting your needs and in a heavier car, low end torque is critical.
I've got a TR224/224 on a 112lsa and love the car. I make 430hp and 400ft lbs of torque but make that peak torque at 4400 rpm. Now if my car was a Z06 'vette and weighed 500lbs less, that would be a different story. I'd probably go with a bigger cam to get more top end out of the car since 400 ftlbs of torque in a 3300lb car feels a lot more powerful than in a 3800lb car.
My ideal combo would be to go with a 402ci ls2 with a very mild cam and make 475hp and 450ft lbs of torque. That would be really fun on the street and still be able to run low 11s at the track with adequite traction.
It's all about meeting your needs and in a heavier car, low end torque is critical.
#40
10 Second Club
iTrader: (5)
Join Date: Jul 2005
Location: by my computer
Posts: 2,958
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Shinerbock07
I like that, good point. Im going with just a regular ole' hotcam i dont care how "baby" it is.
sounds like you are saying... I just want to leave 20 or so horses on the table.
atleast go with a 226/226 or larger...... trust me.. you will regret it later!