Proper spark plugs for 1978 Johnson V6 235hp

[gmacp58]

I am looking for the best spark plugs for my motor. The manual says to use UL77V, are there better spark plugs available for my motor? Thanks in advance for your time!

 

[kbait]

235 hp
1985-1978		ql16v

 

[Joe Reeves]

UL77V is a cold running surface gap plug... I advise to avoid them.

Best and recommended plug for that engine is the Champion QL77JC4 plug, gaped at either .030 (long life) or .040 (super hot spark).