Classic Engine Tech 1967 - 1981 Engine Related

what gears should i put in the rear? 327/m-21

Thread Tools
 
Search this Thread
 
Old Aug 19, 2006 | 09:25 PM
  #16  
74327camaro's Avatar
Thread Starter
Registered User
 
Joined: Aug 2006
Posts: 12
Re: what gears should i put in the rear? 327/m-21

ok and i should be able to hear the spark knock at idle or rev....it will be a good tickin noise right?
Old Aug 20, 2006 | 06:50 AM
  #17  
Dave89IROC's Avatar
Registered User
 
Joined: Aug 2002
Posts: 4,676
From: Melvindale, MI, US
Re: what gears should i put in the rear? 327/m-21

it will sound like a rattle, when you are driving, under heavy accel
Old Aug 20, 2006 | 09:25 AM
  #18  
angel71rs's Avatar
Registered User
 
Joined: Jun 2001
Posts: 1,209
From: TX
Re: what gears should i put in the rear? 327/m-21

Originally Posted by Dave89IROC
10 degrees is a good base line to start at, keep bumping it higher(a few degrees at a time) till you get spark knock, then back it off, should be the sweet spot
You can over time a low compression engine this way, especially if it's over cammed, cause it might not ping till you're way past your ideal timing settings. Might never ping at all.

Best way is to use a stop watch or go to the track. If you go with a stopwatch, don't do it in 1st so wheelspin doesn't throw things off. Better to do it in 2nd from say 2k - 5k. As you crank in more initial timing, you have to be careful you don't get excess total timing > 3k rpm. You also have to experiment with the curve to try and bring in timing as quickly as possible.

Tuning is a lot of work, but it's the difference between a car that runs 15.7s and one that gets well into the 13s.
Old Aug 20, 2006 | 08:22 PM
  #19  
74327camaro's Avatar
Thread Starter
Registered User
 
Joined: Aug 2006
Posts: 12
Re: what gears should i put in the rear? 327/m-21

ok we have another problem....we took it to get it emmissions tested and its way rich....and we have a miss in the motor. i pulled all the plugs and they seem to look fine...whats the best way to test the plug wires...they seem to all be in good shape still. i know the carb needs tunnin done. but im not sure about the miss.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dbusch22
Forced Induction
6
Oct 31, 2016 11:09 AM
nodnarb481
Middle Atlantic
0
Jan 1, 2015 11:43 PM
BIGCOWL-IMP
Midwest
0
Nov 21, 2014 09:40 AM
chevroletfreak
LT1 Based Engine Tech
202
Jul 4, 2005 05:00 PM




All times are GMT -5. The time now is 12:11 PM.