TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

88 350 tpi timing

Thread Tools
 
Search this Thread
 
Old Sep 13, 2011 | 08:26 PM
  #1  
Drewmeyes88's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2011
Posts: 40
Likes: 0
Car: 88 firebird ws6
Engine: 350 tpi
Transmission: 350 turbo
88 350 tpi timing

Ok I was replacing my distributor cap and it was getting dark me and my friend didn't realize there was a slot for it to fall in so I tried turning the cap to get the holes to line up. Well when I tried to turn it I turned the whole distributor and now i don't know where to turn it back to? I don't have a timing light at the house. So what should or can I do? I'd it alright tp drive? Please help thanks guys
Reply
Old Sep 13, 2011 | 10:20 PM
  #2  
vetteoz's Avatar
Supreme Member
20 Year Member
iTrader: (13)
 
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: 88 350 tpi timing

Originally Posted by Drewmeyes88
Well when I tried to turn it I turned the whole distributor and now i don't know where to turn it back to? I don't have a timing light at the house. So what should or can I do?
Need to find TDC firing on # 1 spark plug.
Remove #1 spark plug , put finger over hole and bump engine over.When finger is blown off hole is now on ( just past ) TDC @ #1.
Look at timing mark at front of engine and wind crank back until mark on balancer lines up with 6 degrees mark on timing tab..Reinstall dist with rotor pointing to # 1 spark wire.
May have to use long screwdriver to turn oil pump drive in the hole so it lines up with the slot on bottom of dist so dist will drop in and seat correctly
Check which wire is #1 1st.May no longer be in stock position @ 6 o'clock
Should start and run but still need timing light to set correctly
Reply
Old Sep 13, 2011 | 11:00 PM
  #3  
Drewmeyes88's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2011
Posts: 40
Likes: 0
Car: 88 firebird ws6
Engine: 350 tpi
Transmission: 350 turbo
Re: 88 350 tpi timing

Originally Posted by vetteoz
Need to find TDC firing on # 1 spark plug.
Remove #1 spark plug , put finger over hole and bump engine over.When finger is blown off hole is now on ( just past ) TDC @ #1.
Look at timing mark at front of engine and wind crank back until mark on balancer lines up with 6 degrees mark on timing tab..Reinstall dist with rotor pointing to # 1 spark wire.
May have to use long screwdriver to turn oil pump drive in the hole so it lines up with the slot on bottom of dist so dist will drop in and seat correctly
Check which wire is #1 1st.May no longer be in stock position @ 6 o'clock
Should start and run but still need timing light to set correctly
Ok well can get a timing light tomorrow. Do I have to unplug anything to put it in time.
Reply
Old Sep 15, 2011 | 10:38 PM
  #4  
Zipacna's Avatar
Member
 
Joined: Apr 2010
Posts: 138
Likes: 0
From: Omaha, NE
Car: 1988 Camaro IROC T-Top
Engine: 350ci TPI
Transmission: TH-350
Axle/Gears: 4.11 Posi
Re: 88 350 tpi timing

Originally Posted by Drewmeyes88
Ok I was replacing my distributor cap and it was getting dark me and my friend didn't realize there was a slot for it to fall in so I tried turning the cap to get the holes to line up. Well when I tried to turn it I turned the whole distributor and now i don't know where to turn it back to? I don't have a timing light at the house. So what should or can I do? I'd it alright tp drive? Please help thanks guys
Well since you didn't remove the distributor you don't need all of those steps... I assume you only moved it a slight amount, try to move it back to where you remember it. Error on the side of caution by having it more counter clockwise than before.

When you get that timing light I believe the base timing is like 10*, but there should be a sticker under the hood that has the emissions information, base timing will be on one of those stickers.
Reply
Old Sep 16, 2011 | 04:42 AM
  #5  
rgarcia63's Avatar
Supreme Member
 
Joined: Jan 2003
Posts: 2,133
Likes: 4
From: Houston, Texas
Car: 88' IROCZ
Engine: 388 TPI Motown 350 Race block
Transmission: 700R4
Axle/Gears: 2.77
Re: 88 350 tpi timing

You'll need to disconnect the set timing Connector a weather pack connector with brn/wht stripe wire above HVAC housing. You don't need to do that if you're just doing DTC.
if you've got plenty of miles on the engine the timing chain will have stretched a bit which will throw off the timing by a few degrees if you don't compensate for the slack.
To compensate for the slack If it's past the timing tab clockwise when it blows your finger you'll need to turn it counterclockwise pass the tab then clockwise to DTC to take up the slack.
If it hasn't passed the tab then just continue clockwise to align with DTC. line up Distributor #1 with rotor this will get it started but I wouldn't drive it until I got a timing light. If it's stock set @ 6, or if it's modified you'll have to play with it to see what it likes.
Reply
Old Sep 18, 2011 | 11:11 PM
  #6  
Drewmeyes88's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2011
Posts: 40
Likes: 0
Car: 88 firebird ws6
Engine: 350 tpi
Transmission: 350 turbo
Re: 88 350 tpi timing

Ok thanks guys I got it in time a couple days ago. It still has a slight miss at 1200-1800 for some reason. We think it's my distributor, the pick up was greenish and the inside was rusty.
Reply
Old Sep 18, 2011 | 11:36 PM
  #7  
rgarcia63's Avatar
Supreme Member
 
Joined: Jan 2003
Posts: 2,133
Likes: 4
From: Houston, Texas
Car: 88' IROCZ
Engine: 388 TPI Motown 350 Race block
Transmission: 700R4
Axle/Gears: 2.77
Re: 88 350 tpi timing

Diconnect the set timing connector start & ramp idle to 2-3K rpm if
it jumps around it may very well be a worn distributor, or the pick up coil a
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Vintageracer
Camaros for Sale
12
Jan 10, 2020 05:33 PM
wruiz
TPI
15
Aug 13, 2015 09:07 PM
st.evel07
Engine Swap
5
Aug 13, 2015 06:15 PM
gta power
Exhaust
1
Aug 13, 2015 06:15 AM
Sanjay
Engine/Drivetrain/Suspension Parts for Sale
1
Aug 12, 2015 03:41 PM




All times are GMT -5. The time now is 02:55 AM.