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sdrockslangers

07-20-2013 07:34 PM

What plug to run on a Gen 4 BBC 177 motor.

I built 2 Gen 4 BBC motors with 177 blower. 3" pulley on the top and 6" on the bottom. What plug is every one running in their motors. I just want to make sure I am in the right range.

Thanks Steve

proboat-wes

07-20-2013 09:18 PM

ac-mr41t or equal,ran them for years

badluck

07-21-2013 12:38 AM

I would run NGK R5673-8. I have been using them in blown engines for years.

ezstriper

07-23-2013 04:26 PM

non resister plugs can wreak havoc on computers/MSD boxes....

MILD THUNDER

07-23-2013 05:08 PM

Quote:

Originally Posted by badluck (Post 3962097)

I would run NGK R5673-8. I have been using them in blown engines for years.

Same here.

Griff

07-24-2013 01:20 AM

Quote:

Originally Posted by proboat-wes (Post 3962059)

ac-mr41t or equal,ran them for years

Yep, same plug as the Merc 525SC.

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