adsm08
Senior Master Grease Monkey
Supporting Member
Article Contributor
Ford Technician
TRS 20th Anniversary
- Joined
- Sep 20, 2009
- Messages
- 34,623
- City
- Dillsburg PA
- Vehicle Year
- 1987
- Engine
- 4.0 V6
- Transmission
- Manual
- Tire Size
- 31X10.50X15
The 89TM heads? are they off of a spacific year 2.9l? I have a Couple of sets of heads at this point and I know a few are aftermarket replacemnts but im sure that they are not the World Class heads. I may just throw it together with what i got and see how long it lasts. The 1k miles a year it might see and at low boost may not even be enough to hurt anything.
The 89TM heads are the 89+ MY castings. They "fixed" the head cracking issue.