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01-05-2009, 03:08 PM
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#1 |
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Registered User
Join Date: Mar 2007
Location: republic, mo
Posts: 38
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spark plug for 72 w/hei
what plug would you guys use for a 72 chevy w/350 and accel hei. the motor is pretty much stock w/edelbrock carb and intake and the new hei. i will be using ac delco plugs.
Last edited by m.lander; 01-05-2009 at 03:12 PM. |
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01-05-2009, 03:21 PM
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#2 |
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ASE master tech/machinist
Join Date: May 2008
Location: Blue Mound Texas
Posts: 303
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Re: spark plug for 72 w/hei
R45TS for tapered seat heads, (5/8 socket sized) or R45 for the washer seat plugs (13/16 socket size). Set timing to about 6-8 degrees after TDC with advance un hooked and it will run like a singer sewing machine.
__________________
 "I sit here and I pray in my broken down Chevrolet....."
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01-05-2009, 04:59 PM
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#3 | |
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Registered User
 Join Date: Jan 2001
Location: Sabinal, Texas
Posts: 1,706
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Re: spark plug for 72 w/hei
Quote:
Last edited by 69sixpackbee; 01-05-2009 at 04:59 PM. |
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01-05-2009, 05:22 PM
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#4 | |
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Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: spark plug for 72 w/hei
Quote:
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01-05-2009, 06:00 PM
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#5 |
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Firefighter
Join Date: Feb 2001
Location: Yellville, Ar, USA
Posts: 1,943
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Re: spark plug for 72 w/hei
I have always run AC Delco R44T's, and never had a problem!!!!
__________________
'72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA 
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01-06-2009, 10:17 AM
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#6 |
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Restoration Virgin!
Join Date: Jan 2008
Location: Huntersville, NC
Posts: 8,298
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Re: spark plug for 72 w/hei
just a thought....if you have aftermarket headers you may want to think about accel shorty spark plugs for clearance!!!
__________________
Geoff with a G 1968 Chevy C10 SWB The Mistress 1972 Custom Deluxe C20 Suburban A Suburban Named Isabella 1966 Ford Mustang Mama's High School Graduation Present |
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01-06-2009, 12:00 PM
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#7 |
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Registered User
Join Date: Jan 2001
Location: Sabinal, Texas
Posts: 1,706
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Re: spark plug for 72 w/hei
I use R45TS gapped at .045" , timing at 12-before in my 402 with HEI and Heddman Elite headers. I don't have any clearance issues and it runs like a top.
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01-06-2009, 01:31 PM
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#8 |
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Old Skool Club
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: spark plug for 72 w/hei
AC RapidFire....no issues
__________________
Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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01-06-2009, 01:54 PM
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#9 |
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Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,134
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Re: spark plug for 72 w/hei
I just converted over from points and have R45ts .050 gap. @15* Idles very smooth. R44ts @.045fouled, R45ts' @ .050 are doing better.
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01-06-2009, 04:06 PM
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#10 | |
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ASE master tech/machinist
Join Date: May 2008
Location: Blue Mound Texas
Posts: 303
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Re: spark plug for 72 w/hei
Quote:
__________________
"I sit here and I pray in my broken down Chevrolet....."
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