John's car is/was a 318 Poly motor, not a 'wedge' (right?) I can/will check my FSM, because I seem to recall that it (or mebbe the TSB's?) discussed the short/long reach plug issue--I think, over the past 20 years, I've used both shortie & longie plugs--I still want to "hear" about the theoretical advantages of one style, over the 'other' one. When in doubt; whip it out--the manuals, of course!! Neil |