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What modern spark plugs for 1973 454?



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Nicetie

Regional Rep

Tue 10 Jul 18 21:26

What modern spark plugs for 1973 454?


Evening all,
Need to replace my plugs on my 454 BB
What modern style plugs do people use?
Manual says AC Delco R43T
Thanks!
Ian


--------------------
Ian
'73 C3 454 Convertible in Black

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roscobbc

Committee Member

Tue 10 Jul 18 23:44

Re: What modern spark plugs for 1973 454?


Go on NGK's cross reference and you get this
AC Delco R43T = NGK BR6FS

This shows as resistor plug - medium hot - taper seat.


--------------------
CCCUK Chairman
'68 coupe - 4 speed - 3.08 - 489 cu in - 570 bhp @ 5850 rpm - 606 ft/lbs torque (821 Newton Metres) @ 3850 rpm
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Nicetie

Regional Rep

Thu 12 Jul 18 22:05


Cheers Ross!


--------------------
Ian
'73 C3 454 Convertible in Black

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roscobbc

Committee Member

Fri 13 Jul 18 00:43

Re: What modern spark plugs for 1973 454?


That's not implying that that is the right plug for your engine tight now Ian - simply an equivalent to the number you gave - but it is right in the 'middle' in terms of heat range.


--------------------
CCCUK Chairman
'68 coupe - 4 speed - 3.08 - 489 cu in - 570 bhp @ 5850 rpm - 606 ft/lbs torque (821 Newton Metres) @ 3850 rpm
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