Jump to content

Tekkie24

Difference in 06 5.3 VIN Z and 04 5.3 VIN Z

Recommended Posts

I have a 06 5.3 vin Z with 240k+ miles and have found a few 04 VIN Z engines with low miles. What are the differences in those year of engines? I also have found a few 04 engines that are not the flex fuel 5.3. Will these work in my truck as well? 

Share this post


Link to post
Share on other sites

Flex fuel required changes to the fuel system to support alcohol. So fuel tank, lines etc where I upgrade to remove rubber etc.

Nearly all engines will support e10,e15. However, if you are trying to run E85, you need an engine raged for such. The engine will support higher compression to needed for the lower btu fuel.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×

Important Information

By using this site, you agree to our Terms of Use.