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Spark Plugs #231834
01/23/12 02:56 PM
01/23/12 02:56 PM
Joined: May 2005
Posts: 901
seligman ,AZ
p.k. Offline OP

ChatMaster - 750
p.k.  Offline OP

ChatMaster - 750
Joined: May 2005
Posts: 901
seligman ,AZ
On my 66 corvette s.b.I believe it came with AC 44 spark plugs from the factory.
Now that they are not available any more does anyone(know)
the correct replacement ? AC-43,AC-45,AC-46 ? Let me know
what you think before I spend my money... patriot


p.k.
1939 4 DOOR MASTER DELUXE SPORT SEDAN
1956 BEL AIR 2 DOOR HARDTOP

I'VE spent most of my money on Booze,Women,and mechanical things. The rest I just Wasted........
Re: Spark Plugs [Re: p.k.] #231850
01/23/12 05:14 PM
01/23/12 05:14 PM
Joined: Nov 2001
Posts: 16,689
The Great State of TEXAS
Chipper Offline

Chipper  Offline


ChatMaster - 15,000
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Posts: 16,689
The Great State of TEXAS
The AC 43 is a colder plug, AC 45 a hotter plug (used on may Chevy V-8s). Of course AC 46 is even hotter.


How Sweet the roar of a Chevy four!
Re: Spark Plugs [Re: Chipper] #231853
01/23/12 05:41 PM
01/23/12 05:41 PM
Joined: May 2005
Posts: 901
seligman ,AZ
p.k. Offline OP

ChatMaster - 750
p.k.  Offline OP

ChatMaster - 750
Joined: May 2005
Posts: 901
seligman ,AZ
Witch would be the correct replacement plug ?


p.k.
1939 4 DOOR MASTER DELUXE SPORT SEDAN
1956 BEL AIR 2 DOOR HARDTOP

I'VE spent most of my money on Booze,Women,and mechanical things. The rest I just Wasted........
Re: Spark Plugs [Re: p.k.] #231859
01/23/12 05:51 PM
01/23/12 05:51 PM
Joined: Nov 2001
Posts: 16,689
The Great State of TEXAS
Chipper Offline

Chipper  Offline


ChatMaster - 15,000
Joined: Nov 2001
Posts: 16,689
The Great State of TEXAS
You will need to decide which is best. If the engine starts fine and the current plugs have a light tan color then one step up or down should be okay. If there is any evidence of dark buildup on the electrodes a hotter plug would be better.


How Sweet the roar of a Chevy four!
Re: Spark Plugs [Re: Chipper] #231870
01/23/12 06:48 PM
01/23/12 06:48 PM
Joined: May 2005
Posts: 901
seligman ,AZ
p.k. Offline OP

ChatMaster - 750
p.k.  Offline OP

ChatMaster - 750
Joined: May 2005
Posts: 901
seligman ,AZ
Thanks Chipper.... beermugs


p.k.
1939 4 DOOR MASTER DELUXE SPORT SEDAN
1956 BEL AIR 2 DOOR HARDTOP

I'VE spent most of my money on Booze,Women,and mechanical things. The rest I just Wasted........
Re: Spark Plugs [Re: p.k.] #231873
01/23/12 07:08 PM
01/23/12 07:08 PM
Joined: Apr 2002
Posts: 598
California
P.U. Guy Offline

Oil Can Mechanic
P.U. Guy  Offline

Oil Can Mechanic
Joined: Apr 2002
Posts: 598
California


I try to be the person my dog thought I was.
Re: Spark Plugs [Re: P.U. Guy] #231879
01/23/12 07:51 PM
01/23/12 07:51 PM
Joined: Jan 2002
Posts: 25,124
West Allis,Wi.
Chev Nut Offline

Chev Nut  Offline


ChatMaster - 25,000
Joined: Jan 2002
Posts: 25,124
West Allis,Wi.
There is no"correct" spark plug for any car. The factory used an "in-between" heat range plug. The correct heat range would depend on youtr driving.....and the factory plug satisfied the majority of drivers. I would go with the 45 unless you do a lot of (80 MPH) high speed driving.
I would also suggest the R or resistor plug for a Corvette. Will prevent ignition noise in the radio. I use R45 plugs in all my cars including the 6 volt ones and have no problems.


Chevgene
Re: Spark Plugs [Re: Chev Nut] #231969
01/24/12 02:05 PM
01/24/12 02:05 PM
Joined: May 2005
Posts: 901
seligman ,AZ
p.k. Offline OP

ChatMaster - 750
p.k.  Offline OP

ChatMaster - 750
Joined: May 2005
Posts: 901
seligman ,AZ
After spending a day on the computer and searching many corvette part sites and auto parts stores napa,autozone and O'reillys.It seams that the AC R43 is like Gean said,it's a plug for open driving (witch is what I do ). The AC R45 is more for city stop and go type of driving. I have decided to go with the AC R43 for my type of driving, My closes big town being 80 miles each way. After a 1000 miles or so I'll pull a plug or two and see what's goin on. THANKS FOR YOUR THOUGHS...
patriot driving


p.k.
1939 4 DOOR MASTER DELUXE SPORT SEDAN
1956 BEL AIR 2 DOOR HARDTOP

I'VE spent most of my money on Booze,Women,and mechanical things. The rest I just Wasted........

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