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| Recommended spark plugs for late model head https://slantsix.org/forum/viewtopic.php?t=52935 |
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| Author: | hideogumperjr [ Fri Aug 02, 2013 9:12 pm ] |
| Post subject: | Recommended spark plugs for late model head |
Hey follks, I know I have seen it here but cant seem to locate the thread for recommended spark plug for the late model heads, I have a head off of an 83 van. Thanks. John |
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| Author: | DusterIdiot [ Fri Aug 02, 2013 9:16 pm ] |
| Post subject: | Only one... |
You only have one plug available: NGK UR-5 If you need hotter UR-4, colder for UR-6. I found on my hipo engine builds that UR-5 was too cold, and UR-4 was too hot and ended up with AC Delco R-45TS gapped at .040 as being 'just right' for some reason. We do not have a readily available extended tip plug like the drool tube heads guys have, so you are stuck with the above options. Good Luck, -D.Idiot |
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| Author: | hideogumperjr [ Fri Aug 02, 2013 9:26 pm ] |
| Post subject: | |
Thanks DI. John |
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