Dumbest question of all time! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

78chev · 06-25-2007, 12:26 AM

My 78c10 350 runs great but as I was working on lining up my body panels w/my hood off I noticed that the plug wires going to my distributer were a jumbled mess.
I think they may be miss timed (I've seen a small block run on 2 cylinders)
I checked my Chiltons manual for a firing order & concluded that if I don't know which cylinder represents which # a firing order does me no good.
Can somebody just tell me which cylinder is which?
A diagram would be a big help.
Thanks.

MylilBowTie · 06-25-2007, 12:40 AM

Driver side of the block front to back is 1357 and passenger side is 2468.

bobbo · 06-25-2007, 06:51 AM

8-----7
6-----5
4-----3
2-----1
Front

Does that help?

babyJay · 06-25-2007, 11:58 AM

#1 on the cap is the second post clockwise toward the front of the engine from where the wires attach.

kevinr1970 · 06-25-2007, 12:54 PM

What did you say...

But seriously, to maybe add stupidity to this thread, does it matter which one you plug the #1 plug wire to as long as they are in the proper firing order?

Quote:

Originally Posted by babyJay

#1 on the cap is the second post clockwise from where the wires attach.

babyJay · 06-25-2007, 12:58 PM

HA HA

You quoted me just before I removed that pic........and the only thing it affects is the clearance for the vacuum advance for adjusting the timing...don't want it to hit the firewall or intake.

MylilBowTie · 06-25-2007, 02:25 PM

The firing order on the cap can start anywhere. Get #1 on TDC on compression stroke. Pull the distributor cap off and look at where the rotor is pointing. That will show where the firing order will start. It starts clockwise around the distributor cap.

jchav62 · 06-25-2007, 06:03 PM

On an HEI distributor, #1 is usually pointing around 4 or 5 o'clock, then it goes around clockwise 1-8-4-3-6-5-7-2.

06-25-2007, 12:40 AM	#2
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Re: Dumbest question of all time! Driver side of the block front to back is 1357 and passenger side is 2468. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

06-25-2007, 06:51 AM	#3
bobbo Droppin' It Like It's Hot! Join Date: Jun 2007 Location: Battlefield, Missouri Posts: 2,934	Re: Dumbest question of all time! 8-----7 6-----5 4-----3 2-----1 Front Does that help? __________________ Robert Life Member RIP CAROL JANICE HARTMAN. BELOVED MOTHER. 01/04/53 - 03/05/09 1969 1500 Norwood, MO 2007 Big Sandy, TN 2008 Had nothing to do with the forklift! Kirkwood, MO (Midwest Meet 2009) Midwest All Truck Nationals, KCMO - 2008 - 2009 - 2010 - 2012 - 2014 SUPPORT THE SITE HERE!

06-25-2007, 11:58 AM	#4
babyJay Arrived on a Pale Horse Join Date: Mar 2007 Location: SnagTown Indiana Posts: 2,524	Re: Dumbest question of all time! #1 on the cap is the second post clockwise toward the front of the engine from where the wires attach. __________________ Jason 87 V30 350TBI/400 White w/Boss V-plow 89 R3500 CC SRW Last edited by babyJay; 06-25-2007 at 12:54 PM.

06-25-2007, 12:58 PM	#6
babyJay Arrived on a Pale Horse Join Date: Mar 2007 Location: SnagTown Indiana Posts: 2,524	Re: Dumbest question of all time! HA HA You quoted me just before I removed that pic........and the only thing it affects is the clearance for the vacuum advance for adjusting the timing...don't want it to hit the firewall or intake. __________________ Jason 87 V30 350TBI/400 White w/Boss V-plow 89 R3500 CC SRW Last edited by babyJay; 06-25-2007 at 01:53 PM.

06-25-2007, 02:25 PM	#7
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Re: Dumbest question of all time! The firing order on the cap can start anywhere. Get #1 on TDC on compression stroke. Pull the distributor cap off and look at where the rotor is pointing. That will show where the firing order will start. It starts clockwise around the distributor cap. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

06-25-2007, 12:26 AM	#1
78chev Registered User Join Date: Feb 2007 Location: redondo beach california Posts: 84	Dumbest question of all time! My 78c10 350 runs great but as I was working on lining up my body panels w/my hood off I noticed that the plug wires going to my distributer were a jumbled mess. I think they may be miss timed (I've seen a small block run on 2 cylinders) I checked my Chiltons manual for a firing order & concluded that if I don't know which cylinder represents which # a firing order does me no good. Can somebody just tell me which cylinder is which? A diagram would be a big help. Thanks.

06-25-2007, 06:03 PM	#8
jchav62 1962 C-10 Join Date: Apr 2005 Location: Las Vegas, New Mexico Posts: 4,978	Re: Dumbest question of all time! On an HEI distributor, #1 is usually pointing around 4 or 5 o'clock, then it goes around clockwise 1-8-4-3-6-5-7-2. __________________ Joseph Chavez "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4



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