Indexing Spark plugs

[Bob Dunahugh]

Yes. It's a detail. But I do it in all engines. I'll buy 12 to make a set. Then keep the extras for the next install. Makes for a smother. More efficient combustion chamber flame front. It's another small part. Of the reason that you can wipe the inside of my 403 tail pipe with a tissue. And the tissue will remain white.
Bob Dunahugh
78 403 Royale
4 Real COPO Yenkos

 

[jim kanomata1]

Bob,
JUDSON back in the 90's solid a and I ue to do that.

On Wed, Dec 11, 2019 at 6:26 PM Bob Dunahugh via Gmclist <

> Yes. It's a detail. But I do it in all engines. I'll buy 12 to make a
> set. Then keep the extras for the next install. Makes for a smother. More
> efficient combustion chamber flame front. It's another small part. Of the
> reason that you can wipe the inside of my 403 tail pipe with a tissue. And
> the tissue will remain white.
> Bob Dunahugh
> 78 403 Royale
> 4 Real COPO Yenkos
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmcrvparts.com
1-800-752-7502

 

[chris tyler]

Defintely a requirement when running domed pistons. Never seen any difference with flat tops.
But it certainly cant hurt!
--
76 Glenbrook