big block chevy correct spark plugs

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09-22-2014, 05:29 PM

bigjohn1966

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big block chevy correct spark plugs

hi what recommendations would you use on a 92 gen 5 bbc engine with b m 420 blower on it

09-22-2014, 06:16 PM

MILD THUNDER

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What heads?? Stock GM rectangle ports? If so, MR41T, or NGK 5673-8.

09-23-2014, 02:14 PM

Griff

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Quote:

Originally Posted by mild thunder

what heads?? Stock gm rectangle ports? If so, mr41t, or ngk 5673-8.

09-23-2014, 03:49 PM

bigjohn1966

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Quote:

Originally Posted by MILD THUNDER

What heads?? Stock GM rectangle ports? If so, MR41T, or NGK 5673-8.

No it has them oval peanut heads on it

09-23-2014, 05:41 PM

30ftpanther

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I have been running the MR43T for years in two 330hp peanut headed 454s with 177 blowers making 500hp.

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