General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.
Sponsored by:
Sponsored by:

Desktop Dyno

Thread Tools
 
Search this Thread
 
Old 07-30-2003, 01:16 AM
  #1  
Senior Member
Certified GM nut
Thread Starter
 
FiReDeViL's Avatar
 
Join Date: Jun 2003
Location: Saginaw, MI
Posts: 1,632
Likes: 0
Received 0 Likes on 0 Posts
FiReDeViL is on a distinguished road
Default Desktop Dyno

ok so im tryin to create as close to a stock profile as possible for the 3800 but i was wondering if some of you more knowedgeable folk could point out any flaws.... thanks

and edit yes i nkow its under a chevy 3.8 but as far as i could tell they were the same

Old 07-30-2003, 11:23 AM
  #2  
Senior Member
True Car Nut
 
LittleHoov's Avatar
 
Join Date: Jun 2003
Location: Climax Springs, Missouri
Posts: 2,493
Likes: 0
Received 0 Likes on 0 Posts
LittleHoov is on a distinguished road
Default

should be running on a mix of alcohol and instead of gasoline right?
Old 07-30-2003, 12:13 PM
  #3  
Senior Member
Certified GM nut
Thread Starter
 
FiReDeViL's Avatar
 
Join Date: Jun 2003
Location: Saginaw, MI
Posts: 1,632
Likes: 0
Received 0 Likes on 0 Posts
FiReDeViL is on a distinguished road
Default

wel i need to know if i have the right intake CFM and such
and valve size and such
Old 07-30-2003, 02:09 PM
  #4  
Senior Member
True Car Nut
 
dbtk2's Avatar
 
Join Date: May 2003
Location: Holt, MI & Lima, OH
Posts: 3,022
Likes: 0
Received 0 Likes on 0 Posts
dbtk2 is on a distinguished road
Default

Well I can tell you that the compression ratio is 9.5:1 not 9.4:1.
The cam doesn't seem to be correct from the information I have about it, although I wouldn't doubt it if my info was wrong. The cam is .4128 valve lift at the intake and exhaust valves, which is .258 cam lift. It is also 182 degrees @ .050 intake, and 192 degrees @ .050 exhaust. Everything else seems to be correct about it. The timing advance at WOT would be around 30 on a N/A 3800, so you may want to change that also. But, it looks to be pretty accurate the way it is, so you may want to just leave it alone, the things that a wrong that I can see are so minor it isn't even worth changing.

BTW...Where did you get that program...it looks pretty awesome.
Old 07-30-2003, 03:14 PM
  #5  
Senior Member
Certified GM nut
 
95BonnevilleSESC's Avatar
 
Join Date: Aug 2002
Location: Kalamazoo, MI
Posts: 1,839
Likes: 0
Received 0 Likes on 0 Posts
95BonnevilleSESC is on a distinguished road
Default

How do you account for a Supercharger in that program?
Old 07-30-2003, 03:35 PM
  #6  
Senior Member
Certified GM nut
Thread Starter
 
FiReDeViL's Avatar
 
Join Date: Jun 2003
Location: Saginaw, MI
Posts: 1,632
Likes: 0
Received 0 Likes on 0 Posts
FiReDeViL is on a distinguished road
Default

Originally Posted by 95BonnevilleSESC
How do you account for a Supercharger in that program?
the m90 isnt in that program unfortunatly......
Old 07-30-2003, 03:40 PM
  #7  
Senior Member
Certified GM nut
 
95BonnevilleSESC's Avatar
 
Join Date: Aug 2002
Location: Kalamazoo, MI
Posts: 1,839
Likes: 0
Received 0 Likes on 0 Posts
95BonnevilleSESC is on a distinguished road
Default

I am M62.
Old 07-30-2003, 03:42 PM
  #8  
Senior Member
Certified GM nut
Thread Starter
 
FiReDeViL's Avatar
 
Join Date: Jun 2003
Location: Saginaw, MI
Posts: 1,632
Likes: 0
Received 0 Likes on 0 Posts
FiReDeViL is on a distinguished road
Default

Originally Posted by 95BonnevilleSESC
I am M62.
hmm not in there either no eatons :(

say you wouldnt happen to know the size of the stock throttle body would you?
Old 07-30-2003, 03:46 PM
  #9  
Senior Member
Certified GM nut
 
95BonnevilleSESC's Avatar
 
Join Date: Aug 2002
Location: Kalamazoo, MI
Posts: 1,839
Likes: 0
Received 0 Likes on 0 Posts
95BonnevilleSESC is on a distinguished road
Default

It depends on the year and induction. I think mine is 70mm, but '92-93 L67 is smaller (65mm?) I really don't know about the NA engines. PM Willwren or Jr's3800. They have the magic book.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
OLBlueEyesBonne
Performance, Brainstorming & Tuning
14
05-13-2008 10:14 AM
Marik_bathory
Lounge
2
05-09-2007 12:33 AM
DJ SHO
General GM Chat
13
05-07-2005 12:15 AM
97NAbonneville1
Lounge
39
12-28-2003 06:37 AM
macho_mike21
Lounge
6
09-23-2003 09:25 AM



Quick Reply: Desktop Dyno



All times are GMT -4. The time now is 12:29 PM.