Upgrading to HEI - Firing Order

Reply Subscribe

Thread Tools

Search this Thread

Jul 3, 2011 | 06:25 PM

cruisin68

Thread Starter

Intermediate

Joined: Apr 2008

Posts: 28

Likes: 0

Upgrading to HEI - Firing Order

Ok. I'm just finished a build on my 68 327 and have added an HEI wirh tach drive. Looking at my Haynes manual there are two sets of firing orders....one for a v8 with points style distributor and one for the HEI distributor years.

My Question: Should i be concerned with the HEI firing order just because I upgraded to HEI or do I stick with the original firing order from my old points distributor?

Just need to add gas after this and see if she starts....

As a side note I am providing 12V to new distributor from the fuse box ING..any problems with that? Tracing the resistance wire for the old coil is like looking at needle in a hay stack.

Thanks

Jul 3, 2011 | 06:37 PM

...Roger...

Race Director

Joined: May 2006

Posts: 16,528

Likes: 53

From: Dayton, Ohio

1 8 4 3 6 5 7 2

Jul 3, 2011 | 06:40 PM

scottyp99

Le Mans Master

Joined: Mar 2008

Posts: 5,948

Likes: 72

From: Oxford MA-----You just lost the game!!!!

Not really sure what you're talking about. Small block chevy firing order is 18436572.

Scott

Jul 3, 2011 | 06:44 PM

cruisin68

Thread Starter

Intermediate

Joined: Apr 2008

Posts: 28

Likes: 0

Quote:

Originally Posted by scottyp99

Not really sure what you're talking about. Small block chevy firing order is 18436572.

Scott

That's what I thought. Must be a misprint on this edition the other listed with HEI reverses the 7 an d 6 cylinders.

Odd.

Thanks for keeping my sanity

Jul 3, 2011 | 07:10 PM

scottyp99

Le Mans Master

Joined: Mar 2008

Posts: 5,948

Likes: 72

From: Oxford MA-----You just lost the game!!!!

Quote:

Originally Posted by cruisin68

That's what I thought. Must be a misprint on this edition the other listed with HEI reverses the 7 an d 6 cylinders.

Odd.

Thanks for keeping my sanity

The LS engines have a different firing order, maybe some info got mixed up somewhere. Odd, indeed.

Scott

Jul 3, 2011 | 07:22 PM

Gordonm

Race Director

Joined: Dec 1999

Posts: 19,610

Likes: 778

From: Forked River NJ

SB firing order is 18436572
LS firing order is 18436752

Jul 4, 2011 | 09:04 AM

pawpaws toy

Burning Brakes

Joined: Jun 2011

Posts: 817

Likes: 11

From: lewisburg wv

The firing order doesn't change. But on the HEI cap #1 cyl starts 1 position off from the points cap. The chilton manual shows this a little better. Happy 4-th!!!