what spark plugs?
Melting Slicks
Joined: Jul 1999
Posts: 3,201
Likes: 0
From: Clifton Park NY
Re: what spark plugs? (daily_driver)
Hey daily-driver,
What is the number of the plugs you're running? I wanted to try the Bosch Platinum, but don't know which ones to use. I need a plug slightly hotter than the ones originally used on the '74. (I'm using AC R45T; factory recommends AC R44T.)
-Pedro
What is the number of the plugs you're running? I wanted to try the Bosch Platinum, but don't know which ones to use. I need a plug slightly hotter than the ones originally used on the '74. (I'm using AC R45T; factory recommends AC R44T.)
-Pedro
Melting Slicks
Joined: Apr 2001
Posts: 2,280
Likes: 0
From: colorado springs CO
Re: what spark plugs? (Pedro'74)
Hey daily-driver,
What is the number of the plugs you're running? I wanted to try the Bosch Platinum, but don't know which ones to use. I need a plug slightly hotter than the ones originally used on the '74. (I'm using AC R45T; factory recommends AC R44T.)
-Pedro
What is the number of the plugs you're running? I wanted to try the Bosch Platinum, but don't know which ones to use. I need a plug slightly hotter than the ones originally used on the '74. (I'm using AC R45T; factory recommends AC R44T.)
-Pedro
Melting Slicks
Joined: Jul 1999
Posts: 3,201
Likes: 0
From: Clifton Park NY
Re: what spark plugs? (daily_driver)
im using # 4208
-Pedro
(Dammit, 2000 posts, and they didn't gimme my 5 green stars. Am I stuck with these girlie pink stars forever? :jester )
[Modified by Pedro'74, 6:59 PM 10/17/2001]
Melting Slicks
Joined: Apr 2001
Posts: 2,280
Likes: 0
From: colorado springs CO
Re: what spark plugs? (Pedro'74)
hmm man i have no clue????
thats the # on the box..
i think its an "application" #...
the spark plug has different numbers on it
hr9bpx r6 971
there must be a website somewhere ehh??
thats the # on the box..
i think its an "application" #...
the spark plug has different numbers on it
hr9bpx r6 971
there must be a website somewhere ehh??
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Melting Slicks
Joined: Apr 2001
Posts: 2,280
Likes: 0
From: colorado springs CO
Re: what spark plugs? (daily_driver)
heres the application chart from their websiteHere are the Bosch Spark Plugs for your 1976 CHEVROLET CORVETTE V8-5.7 liter engine:
Spark Plug Brand Part Number
Platinum+4
Platinum 4208
Super 7586
Spark Plug Brand Part Number
Platinum+4
Platinum 4208
Super 7586
Melting Slicks
Joined: Jul 1999
Posts: 3,201
Likes: 0
From: Clifton Park NY
Re: what spark plugs? (daily_driver)
I checked their website: it's one of those Autozone kinda programs; you put the year, make, model, it returns the recommended plug. If I remember correctly, for the '74 they recommend the 4206, and for anything later than '76, they recommend the 4208.
Thanks!
-Pedro
Thanks!
-Pedro
Melting Slicks
Joined: Jul 1999
Posts: 3,201
Likes: 0
From: Clifton Park NY
Re: what spark plugs? (Pedro'74)
Thanks, daily! The post '75 Corvettes all use a "5" heat range plug, which is what I'm using now. And I have a Pertronix module and a high energy coil. So I guess I'm better off with the plugs you're using than with the ones recommended for the '74. I'll give it a try.
Thanks again!
-Pedro
Thanks again!
-Pedro
