Which one is #1 on an HEI - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71swb4x4 · 08-15-2004, 11:32 AM

I have finally started putting my TPI on my truck. Which one on the HEI is #1? I included a picture, along with the one that I think is #1. I would rather find out I am wrong now than when I try to start my truck so hlep me out

71swb4x4 · 08-15-2004, 11:35 AM

Do you go clockwise or counterclockwise?

gonebad2 · 08-15-2004, 12:13 PM

The one you circled is ok to use as number one. Your firing order on the distributor goes clockwise.

71swb4x4 · 08-15-2004, 12:51 PM

Thank You!!
What a question from someone doing a TPI swap huh, I was pretty sure that was the way it went but its been a long time since I have pulled my plug wires.

junkyardjohn · 08-15-2004, 05:22 PM

I USUALLY USE THE TERMINAL CIRCLED, OR THE ONE DIRECTLY TO THE RIGHT OF IT. IT REALLY DOESN'T MATTER WITCH TERMINAL YOU START WITH, OR CALL #1 AS LONG AS YOU INSTALL ALL THE OTHER WIRES IN THE CORESPONDING FIRING ORDER, & THE TERMINAL YOU ARE CALLING #1 IS POINTING AT THE # 1 CYL WHEN IT IS AT T.D.C. (THE DIST. DOESN'T KNOW THE DIFFERENCE)

JOHN

**passthebuck** · 08-15-2004, 05:30 PM

junkyardjohn is right, any terminal is # 1 as long as you put the wires in the correct firing order. I have been through this before too.

robertwb · 08-15-2004, 05:45 PM

TPI will fit with a large cap HEI?

neonlarry · 08-15-2004, 05:48 PM

Quote:

TPI will fit with a large cap HEI?

Yes, they did not go to small cap until 1988.

Tx Firefighter · 08-15-2004, 10:25 PM

Like was said, number one is where you make it. But, technically GM did it where you have the circled terminal. Factory HEI's had a ring around the plug wires that was labeled as to which cylinder went where.

Insert Tx Firefighter (TM) picture of said ring....

Blue Beard · 08-16-2004, 08:19 AM

Now you've all put a question in my mind....

Seems like some of the diagrams I've seen had the #1 on the front right side of the cap.

Either that or I had too much too drink when looking at it.

GMC AMI · 08-17-2004, 08:18 AM

Engine has to be top dead center on # 1 then the rotor has to be on the terminal you pick as the # 1 to start firing order.

08-15-2004, 11:35 AM	#2
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Do you go clockwise or counterclockwise? __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

08-15-2004, 12:13 PM	#3
gonebad2 Merciless Butcher Join Date: Oct 2003 Location: CC Nevada Posts: 1,447	The one you circled is ok to use as number one. Your firing order on the distributor goes clockwise. __________________ Your Bought And Sold....I Got Your Soul!

08-15-2004, 12:51 PM	#4
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Thank You!! What a question from someone doing a TPI swap huh, I was pretty sure that was the way it went but its been a long time since I have pulled my plug wires. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

08-15-2004, 05:22 PM	#5
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,425	I USUALLY USE THE TERMINAL CIRCLED, OR THE ONE DIRECTLY TO THE RIGHT OF IT. IT REALLY DOESN'T MATTER WITCH TERMINAL YOU START WITH, OR CALL #1 AS LONG AS YOU INSTALL ALL THE OTHER WIRES IN THE CORESPONDING FIRING ORDER, & THE TERMINAL YOU ARE CALLING #1 IS POINTING AT THE # 1 CYL WHEN IT IS AT T.D.C. (THE DIST. DOESN'T KNOW THE DIFFERENCE) JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

08-15-2004, 05:30 PM	#6
passthebuck Sisyphus was my mentor! Join Date: Sep 2002 Location: Carleton Place, Ontario CANADA Posts: 984	junkyardjohn is right, any terminal is # 1 as long as you put the wires in the correct firing order. I have been through this before too. __________________ passthebuck #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car

08-15-2004, 11:32 AM	#1
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Which one is #1 on an HEI I have finally started putting my TPI on my truck. Which one on the HEI is #1? I included a picture, along with the one that I think is #1. I would rather find out I am wrong now than when I try to start my truck so hlep me out Attached Images __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

08-15-2004, 05:45 PM	#7
robertwb Registered User Join Date: May 2003 Location: brooksville-fla Posts: 77	TPI will fit with a large cap HEI? __________________ 1972 LWB 4x4 1970 LWB 2wd 1971 chevelle 1972 datsun PL-521/nissan

08-15-2004, 10:25 PM	#9
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Like was said, number one is where you make it. But, technically GM did it where you have the circled terminal. Factory HEI's had a ring around the plug wires that was labeled as to which cylinder went where. Insert Tx Firefighter (TM) picture of said ring.... Attached Images __________________ I'm on the Instagram- @Gearhead_Kevin

08-16-2004, 08:19 AM	#10
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,831	Now you've all put a question in my mind.... Seems like some of the diagrams I've seen had the #1 on the front right side of the cap. Either that or I had too much too drink when looking at it. __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

08-17-2004, 08:18 AM	#11
GMC AMI Registered User Join Date: Apr 2004 Location: The Other Maine! Posts: 2,236	Engine has to be top dead center on # 1 then the rotor has to be on the terminal you pick as the # 1 to start firing order. __________________ 1968 Chevy 4x4 307 4 speed



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