I'm wanting to know if anyone has had any problems with these headers or any other brands? Also, are the header bolt locations difficult to access if they need to be tightened.

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'98 Expy
5.4L 3.73
Gibson catback
IPD Rear swaybar
Bilstein Shocks
Hood Guard
Manik Grill and Rear Tail Guards
PIAA Foglights
Stull Billet Grill and Bumper Inserts

Coming Soon...

75mm Edelbrock TB
JBA Ceramic Coated Headers
Supercharger..I'm soo confused!!
Superchip w/above modifications applied

"Its Sooo Big...Shes Gotta to be Blown!"

 

i have headman headers on my 97 4.6L.next to the superchip i put in it was the best mod.i did.they are hard to put in about 6 to 8 hrs.after you do one set i think it would take 6 hrs. tops.the only problems i had was the bolts that hold the cats to the header would come loos after 2 to 3 weeks.so i got some new bolts and lock washers,use #8 grade bolts.the #8 grade can take more .the studs that hold the header to the exhaust manafold only needed to be tighting after a day or two of driving,never had to do it agine.the headers are a most if you are going to do a Kan,and exhaust.all together they work even better.