- Local time
- 6:56 AM
- Joined
- Dec 31, 2020
- Messages
- 8,516
- Reaction score
- 20,121
- Location
- Ontario, Canada
I use Champion RJ12YC in my street 440's.
B/RB Plugs
- Thread starter Stumper
- Start date
Engine is a stock built 361/4 in a 62 Fury.
- Local time
- 6:56 AM
- Joined
- Dec 31, 2020
- Messages
- 8,516
- Reaction score
- 20,121
- Location
- Ontario, Canada
I would think the Champion RJ12YC should work O.K. there as well. Likely about same compression as a 440. Somewhere around 9.5 - 10.0.
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