Hey Guys,

I just received my 4lb pulley, AF1 filter, 4bank chip, line valve mod and plugs. My truck will arrive on tuesday.

A friend of mine and myself are going to do the mods except the plugs, which I will have a mechanic install.

My question is: How long can I drive the truck after installing the mods before I have the olugs put in?

 

You should be OK for a while

Which plugs did you get??

 

Denso IT20's. I was a bit worried that it might cause damage on the stock plugs.The ford dealer is packed with work and they want US$220 to change them. I spoke to a reputable mechanic and her said it would take about an hour and his cost is $60.

 

Don's Bolt is there something wrong with IT20's on a 4 lber?

 

A lot of guys use them, so I would say you would be fine with them. I have never used them myself, so can't give you any first had knowledge about them.

 

only an hour to install? 60 bucks? i would have gladly paid that....every shop around me wanted 240 so i just ended up doin it myself

 

I've had the IT 20's on for about a year with plenty of trips down the 1320 with no problems.
I'm switching to Autolite AR94's just to give them a try. A lot cheaper than the Denso's.

 

A lot cheaper than the Denso's Yep the Denso's cost $80 for the 8.

 

I ran the factory stock plugs with a 6lb lower and Predator and JLP Cold Air Kit for 6 months, no problem.

Put cold plugs in, and couldn't get away with any more timing than I could with the stock "hot" plugs.

 

Did you change the gap?

 

.035

 

What do you guys suggest I gap my IT20' at with the 4 lb lower? .50?

 

.032-.035

 

This is Tampablack99's chart i don't know if he ever finished it but this gives you an idea!! I'm running the IT22 with a 4lb lower and apten port. leaves me room to upgrade

 

My tuner suggested .50 and you guys say .36-.38 so I guess I might be safest with .40?