I called Eurotoys to order the upper and lower pulley package. Unfortunately the lower pulleys are out of stock for 2-3 weeks. I did some further research this morning and read that "the 4.2 engines already have a larger lower pulley...so the upper pulley is the only option before big time twin screw upgrade from Avos."

I couldn't find a single instance of anyone upgrading the lower on a 4.2.

Has anyone tried the Eurotoys lower pulley on a 4.2? What were the results? For $1000, I'd hope to see a noticeable improvement. Before I drop the loot, which I'm prepared to do immediately, I was hoping for some feedback from you guys. Thanks.

 

This is the lower pulley I was going to purchase.

http://www.eurotoysltd.com/catalog/p...oducts_id=1466

It says, "This supercharger pulley kit will give you a MAJOR power improvement of 50-60HP when coupled with 1 of our upper pulleys." but says nothing about the psi or performance of the lower by itself.

I've been searching on and off all day and still can't find a testimonial for this crank pulley on a 4.2...