C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

base timming

Old 10-23-2002, 05:40 AM
  #1  
jtfrog
Racer
Thread Starter
 
jtfrog's Avatar
 
Member Since: Jun 2002
Location: Auburn ca
Posts: 296
Likes: 0
Received 0 Likes on 0 Posts
Default base timming

Can the base timing be set on an 86 vette. If so i understand it is in the throttle body drivers side. If the plug has never been removed can i asume the bas idle is ok.
Old 10-23-2002, 06:22 AM
  #2  
gtsyellow
Melting Slicks
 
gtsyellow's Avatar
 
Member Since: Apr 2002
Location: down that one road next to that big tree
Posts: 3,019
Likes: 0
Received 0 Likes on 0 Posts
Default Re: base timming (jtfrog)

base timing is set by unplugging your spark advance, it's by the ecu under the hood on late C4's i have no idea where it is on early but i'm sure someone does. you then twist the distributor till the timing light flashes 6deg BTDC. timing is now set.
Old 10-24-2002, 02:08 AM
  #3  
vettl83
Burning Brakes
 
vettl83's Avatar
 
Member Since: Feb 2002
Location: Montrose Colorado
Posts: 1,232
Received 10 Likes on 7 Posts

Default Re: base timming (gtsyellow)

Brown/tan wire coming out of the fire wall on the drivers side. Take care when unplugging it, as the connector does get brittle from under hood temps. 84 CF 91 ZR-1
Old 10-24-2002, 02:40 AM
  #4  
65Z01
Team Owner
 
65Z01's Avatar
 
Member Since: Dec 2000
Location: SE NY
Posts: 90,675
Likes: 0
Received 300 Likes on 274 Posts
Cruise-In II Veteran

Default Re: base timming (jtfrog)

Base idle is set with the screw on the left side of the TB; base ignition timing is set by openinng the EST connector in the blk/tan wire and adjusting the dist position.
Old 10-24-2002, 03:01 AM
  #5  
ColinOpseth
Racer
 
ColinOpseth's Avatar
 
Member Since: Nov 2001
Location: Los Angeles CA
Posts: 413
Likes: 0
Received 0 Likes on 0 Posts

Default Re: base timming (65Z01)

here are a couple of articles I wrote on setting ignition timing.. pardon the bad links, i still haven't finished updating my articles after my website upgrade..

Setting timing using a timing light (written for TPI vehicles): http://www.gmperformance.org/modules...artid=7&page=1

Installing a V8 distributor: http://www.gmperformance.org/modules...artid=8&page=1

Get notified of new replies

To base timming



Thread Tools
Search this Thread
Quick Reply: base timming



All times are GMT -4. The time now is 06:58 PM.