Well when I changed out my plugs today I should have had all bosch +4 in their. Well, turn out the two easiest to get to were ac delco and the resr of them were bosch. So when I had this shop change out my plugs back in september, somebody must have decided let's steal two of his plugs. So I was pissed, luckily the shop is out of buisness now or I would be raising hell. Then the two ac delco plugs that were in the car were gapped like at .080!!! The plus is my car runs better than ever and I must have had like 10-15hp loss from those ****ty as pices of sh**. The car runs much smoother, idles better, and believe it or not has more power.

 

That is some crappy service. That is also why only my little brother and I work on our Fbodies. We know after the job that it is done correctly and no shortcuts.

 

Well the good olus to this is that my current mechanic is now my really cool with me and they do good work. I see them at the dragstrips and around and they even hook me up a little.

 

They probably forgot to change them the first time. those are probably your stock plugs, that explains the huge gap.

 

Whatever the case may be still still is bs and I could have been running better all this time . It made a huge difference, like day and night.

 

That's probally why they're out of business! A good set of matched & properly gapped plugs will make a world of difference! I have 2 guys that I trust to work on my car & that's it! It's so hard to find a good & honest mechanic....sometimes it's worth it to pay a little more.

 

They probably never replaced the original AC/Delco plugs.... you get a gap of 0.075-0.080" when one of the platinum pucks fall off... not unusual for the AC/Delcos.....