2007 head on an 2005

[Trailblazin Ahead]

Will a 2007 Chevy trailblazer head work on a 2005 Chevy trailblazer. I heard the 2007 is a better head and that it helps performance and etc for the 4200 motor. Any insight would help thanks

[Moots1288]

I believe it does, and it's 06+

[Trailblazin Ahead]

Does it better the performance, over the 2005 head I was gonna pick one up after I do my lift and armor. But wanted insight before I tell the owner of the junked 07 to pull the head for me

[Moots1288]

Yes, it will help with performance.

[v7guy]

The cam cover needs to change from the plastic one to the later metal one and the coils are different on the 06 and up, they're a fair bit smaller. Additionally the fuel injectors are shorter on the late motors, I don't recall off the top of my head if the longer ones pop in there anyways.

You'll get some better airflow from the head itself, but some of the power increase came from a bump in compression from an updated piston.

Also be aware that the coolant temp sensor moves from the water pump neck to the head by cylinder 6, you'll need to at least make sure it's plugged.

[Trailblazin Ahead]

OK thanks guys for all the helpful and useful answers. If and when I do it I'll have my local shop do it. I don't want to mess anything up but thank you again