Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Installed pontiac 350 timing gears wrong
View Single Post
  #2 (permalink)  
Old 07-17-2012, 02:40 AM
cobalt327's Avatar
cobalt327 cobalt327 is offline
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 60
Posts: 5,036
Wiki Edits: 1616

Thanks: 128
Thanked 598 Times in 547 Posts
Quote:
Originally Posted by starin View Post
Hi there all,

I really need some help please, i installed an edelbrock double roller timing chain set on my 1972 pontiac 350, its my first rebuild and i installed the cam gear with the dot at 6 oclock and the crank gear at 12 oclock like a chevy engine. I didnt realize that it should have been 12oclock on both. I ran the wires and stabbed the distributor with it on the number one cylinder and couldnt' figure out why the car was so low on power and would only idle decent when the timing was set at 18 degrees plus it got hot. Well with enough research i found out i put them in the wrong way.

I understand that i am now 180 out and should set my number # 1 cylinder in the traditional # 6 position. however what will my firing order be now? I need some help figuring this out so i can run my wires from the cap to the proper cylinders. Your help is greatly appreciated.

this is in a 1968 firebird with a pontiac 350 still using the original points distributor.

Thanks in advance!
If you installed the timing set as you normally would (crank at 12 o'clock cam at 6 o'clock), cylinder #6 will be at TDC firing. The distributor rotates CCW (opposite of a Chevy). The firing order is 1-8-4-3-6-5-7-2. #1 is driver side, front.

A diagram is here.

All you need to do is either the reset the distributor by turning the crank until the TDC lines are lined up, remove cap and distributor clamp, lift and turn the distributor shaft/rotor 180 degrees from where it is pointing. It will be pointing at either #1 or #6 with the TDC lines aligned. Which ever it is, point the rotor to the other cylinder's terminal).

Or swap the wires, making:
Position 6 on the cap = #1
#5 = #8
#7 = #4
#2 = #3
#1 = #6
#8 = #5
#4 = #7
#3 = #2

Last edited by cobalt327; 07-17-2012 at 02:51 AM.
Reply With Quote