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Bosch Platinum Plus...?

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Old Aug 1, 2011 | 06:22 PM
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Default Bosch Platinum Plus...?
I've used these plugs in my small blocks and Harley and really like them. They last forever, burn cleaner than AC and don't seem to mind winter naps. Anybody know the correct Bosch number for a 68 427, perhaps one heat range higher than stock? (high miler) Can't find much on line that's good to find out. thanks.
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Old Aug 1, 2011 | 11:02 PM
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What plugs are you running now? 45s?
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Old Aug 2, 2011 | 10:15 AM
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Originally Posted by Mike Ward
What plugs are you running now? 45s?
No Mike, he's got AC 44s's and they're burning black with the older motor (read tired). I want to try the platinum wire electrode and one heat range higher to help it burn a little cleaner.
Robbie
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Old Aug 2, 2011 | 10:35 AM
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Maybe try p/n

4035 PLATINUM PLUS
7904 SUPER PLUS

Dunno if that's hotter than a 44 though.
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Old Aug 2, 2011 | 10:38 AM
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Originally Posted by Mike Ward
Maybe try p/n

4035 PLATINUM PLUS
7904 SUPER PLUS

Dunno if that's hotter than a 44 though.
thanks, I'll see if their books give heat ranges at a parts store.
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