What is the difference between a 88-92 460EFI and later model 460EFI? Thanks.

 

Just did a swap from a 95 F450 into a 92 F250. Minor differences. Kept most of the 450 parts because research said the stock injectors, valves and throttle body were slightly larger. Overall slight stock horsepower difference, I think 10hp, nothing major. 450 engine also had a stock oil cooler that ties directly into the water cooling system. Thought that was a darn fine idea even though it's kind of clumsy looking, so I kept it. I'm pretty sure that was it for differences.

 

Thanks, I've dug through everything I could find.... not a lot of information to be found. I kinda remember the later models had slightly larger intake valves but wasn't sure about anything else.

I've bought a '89 F250 with a very tired 460, also have a complete '94 460 engine.... sounds like the '94 would be a better place to start.

 

The heads changed in 93 with the F3TZ heads, There is apparently an intake change as there are 3 different ones listed E8TZ, F2TZ and F3TZ. The exhaust manifolds changed with the heads. The oil cooler you describe is a known leak point and was used starting in 90 on the 460s, prior to that they used an air to oil cooler in front of the AC condensor.

 

Thanks for the reply, some great information. I found a place in Indy called CFM that is suppose to do great port and polish work, been searching through old posts...... think I want a set of L&L headers also, seems to be the most recommended header.