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What kind of spark plugs do I use when I have a HEI distributor in a 4 bolt 360 block from scoggin-dickey. The auto part gave me 8 plugs '26'. Is that correct? I have a '66 chevelle with a porwerglide.

 

[stevenb8]

I usually use r45 or r44 ts's from ac delco

 

[tom3]

Depends on the heads. Old heads with washer seal plugs might be AC R44 gap at 045 for the HEI.

 

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This is a 1969-85 replacement 350 GOODWRENCH ENGINE, Factory HP rated at 250hp 4 bolt block - NEW engine. Doesn't this give you a clue if it's an old heads w/washer seal plugs? Right now it's burning rich. Thanks to all for your help.

<BLOCKQUOTE>quote:</font><HR>Originally posted by tom3:
Depends on the heads. Old heads with washer seal plugs might be AC R44 gap at 045 for the HEI.<HR></BLOCKQUOTE>