Timing gear orientation

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Apr 2, 2011 | 07:07 PM

kevin316

Thread Starter

Elder User

Joined: Feb 2011

Posts: 633

Likes: 1

From: Grande Prairie, Alberta

Timing gear orientation

I had to pull the timing gears off to fix a mistake my son made when rebuilding his 460 in school. When I reinstalled it I made sure #1 was tdc. The mark on the crank gear was at 12 o'clock and I set the mark on the cam gear to 6 o'clock. (I have no information for the cam).

I got everything buttoned up but I can't get it to fire. I checked the timing with a light and it is firing on TDC. I pulled #1 plug and I have spark but, when I put my finger over the plug hole I get spark then my thumb is pushed off by compression.

My question would be, shouldn't I be getting spark just as I am getting compression? Should my timing marks have been at 12 o'clock on both gears?

I would guess yes but it is quite a bit of work to change it so I want to be sure before I go and change it.

Edit:
Sorry wrong thread. Should be in the Big Block thread. I have posted it there as well so if a mod could delete this please

Apr 2, 2011 | 09:08 PM

Conanski

FTE Legend

Joined: Jun 2006

Posts: 31,930

Likes: 1,499

From: Ottawa, Ontario

Timing marks should be facing one another so it sounds like you got that part right, but the motor will need some timing advance to start and run normally so leave the distributor loose enough to turn and crank it around (counter clockwirse) until the engine attempts to start.. that's when you know you are getting close. Once you get it to run then worry about setting the timing correctly.

Apr 2, 2011 | 10:52 PM