Joined: Mon Nov 13th, 2017
Reputation Points: 2361
Spark plugs on 5.0 super easy even with TMH headers, in fact the 5.0 spark plugs are WAY EASIER to access then the OHV or SOHC 4.0l
The TMH headers will fit both GT40 and GT40P heads.....I know because I have done it. You just need to use plug wires with 45 degree angle boots. They also fit aftermarket aluminum heads
the TMH headers fit the IFS trucks with no modifications and retain the stock 5.0L down pipes and CLEAR the 4x4
Conversion headers are typically built for a 5.0L into a TTB truck, completely different. TMH also builds a set of conversion headers (first set were used on my 88 BII in 2005) this model works in TTB trucks.
TMH headers are CA emissions certified, all 50 states will accept these as carb compliant with the certification right on the drivers header.
Robert went through heck to get the CA certification
TMH headers were about $700 to get a set to your door
They are made with Jet hot coating, this process alone is $200.......so the cheap knock offs will never be as good as TMH
TMH headers are very well built and work perfectly, you just need to use different gaskets and hardware rather then the stuff he ships out..
I know my crazy! Do you?
2007 Sport 4door 4x4 4.0L SOHC V6 Ranger