FAST 90/90 Heads/Cam Choice Help
05-03-2008, 12:22 PM
#1
TECH Fanatic
Thread Starter
iTrader: (45)
Join Date: Sep 2006
Location: Clarksville, TN
Posts: 1,122
Likes: 0
Received 0 Likes
on
0 Posts
FAST 90/90 Heads/Cam Choice Help Ok, here is another "what cam should I get" post but please help out if you can-
I'm looking at getting a head and cam package before the end of the month, probably will get the parts from Speed Inc. and have them do the install and tune as well. All the mods are in the sig but they include FAST 90/90, long tubes, and 36lb injectors. I want a cam that will make use of/complement the intake. I was looking at a H/C package with Patriot heads since they seem to be a little more economical: Patriot heads Patriot LS6 5.7 - STAGE 2 (2.02/1.57/64cc or 59cc) Should I get 64 or 59cc?
Speed Inc. suggested these heads and SI6 cam (235/240 .621/.609 111 LSA)
What about the lift- might I run into clearance issues?
These duration numbers are a little on the high end of what I am looking for- if I can get better low end power and/or better manners I have no problem going with a smaller cam.
I was told this package was still "very streetable". I'll be driving my TA on the weekends and to work a couple of times a week so I do want something that still has decent manners and of course good power down low. It usually only sees the strip about 10-15 times a year tops. I do quite a bit of highway driving so it would be nice to be able to have a little more power to accelerate in 6th from about 1800 RPM or so. I'm also getting a 12 bolt or 9 inch and probably 3.73 gears so that will raise my cruising RPMs a little.
Let me know any of your thoughts and advice!
I'm looking at getting a head and cam package before the end of the month, probably will get the parts from Speed Inc. and have them do the install and tune as well. All the mods are in the sig but they include FAST 90/90, long tubes, and 36lb injectors. I want a cam that will make use of/complement the intake. I was looking at a H/C package with Patriot heads since they seem to be a little more economical: Patriot heads Patriot LS6 5.7 - STAGE 2 (2.02/1.57/64cc or 59cc) Should I get 64 or 59cc?
Speed Inc. suggested these heads and SI6 cam (235/240 .621/.609 111 LSA)
What about the lift- might I run into clearance issues?
These duration numbers are a little on the high end of what I am looking for- if I can get better low end power and/or better manners I have no problem going with a smaller cam.
I was told this package was still "very streetable". I'll be driving my TA on the weekends and to work a couple of times a week so I do want something that still has decent manners and of course good power down low. It usually only sees the strip about 10-15 times a year tops. I do quite a bit of highway driving so it would be nice to be able to have a little more power to accelerate in 6th from about 1800 RPM or so. I'm also getting a 12 bolt or 9 inch and probably 3.73 gears so that will raise my cruising RPMs a little.
Let me know any of your thoughts and advice!
05-03-2008, 01:20 PM
#3
TECH Fanatic
Thread Starter
iTrader: (45)
Join Date: Sep 2006
Location: Clarksville, TN
Posts: 1,122
Likes: 0
Received 0 Likes
on
0 Posts
Yeah it's pretty much a daily driver. I have the fast 90/90 on it now and its going back on. Any reason you recommend their SI5? (SI5: 231 237 .589 .595 112)
05-04-2008, 01:39 AM
#5
TECH Fanatic
Thread Starter
iTrader: (45)
Join Date: Sep 2006
Location: Clarksville, TN
Posts: 1,122
Likes: 0
Received 0 Likes
on
0 Posts
I guess I'm just concerned about getting a peaky monster cam that won't have good power down low or drive worth a crap. Anybody have the SI6 cam or have dyno graphs with it?
05-04-2008, 02:08 AM
#7
TECH Fanatic
Thread Starter
iTrader: (45)
Join Date: Sep 2006
Location: Clarksville, TN
Posts: 1,122
Likes: 0
Received 0 Likes
on
0 Posts
That's good news then. The car won't live at the track and it doesn't need to be a dyno queen either, just provide good power all around and have decent manners since my wife drives it every once in a while Trending Topics
05-04-2008, 02:15 AM
#8
TECH Addict
Join Date: Jul 2002
Location: Somewhere I Belong
Posts: 2,906
Likes: 0
Received 0 Likes
on
0 Posts