Sparkplug Selection
Thread Starter
Heel & Toe
Joined: Feb 2005
Posts: 18
Likes: 0
From: Shreveport La.
Sparkplug Selection
I need help figureing out what spark plug to run in my '68 Vette. It is a 327/350 HP bored .30 over with cam, roller rockers, head work, alloy pistons, balanced, headers, high rise intake, etc. It presently has ACDelco R45S plugs.
Can someone give me some guidlines as to picking a sparkplug? Also is it worth the money to go with platinum or iridium plugs.
Any help will be appreciated.
Can someone give me some guidlines as to picking a sparkplug? Also is it worth the money to go with platinum or iridium plugs.
Any help will be appreciated.
CF Community Team
Joined: Oct 2004
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From: Cape Cod, Mass.
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My 65 L79 350 horse has a .30 overbore. I run Bosch platinum #4236 in them gapped at .035. It runs great on them. They are a 5 heat range. I have run every plug in it over the years from Champion to AC Delco 45's. This is the best plug for this car in my opinion. Yours should be the same.
Le Mans Master
Joined: Jan 2007
Posts: 5,485
Likes: 7
From: Peekskill NY
My 65 L79 350 horse has a .30 overbore. I run Bosch platinum #4236 in them gapped at .035. It runs great on them. They are a 5 heat range. I have run every plug in it over the years from Champion to AC Delco 45's. This is the best plug for this car in my opinion. Yours should be the same.
Glenn
