I did a search and every post I saw regarding this topic had a lot of guessing, but no solid answers.

I was curious if anyone knew FOR SURE that a 4.7 block will mate up with the 4.3 or 4.0 heads. I was also curious if anyone knew FOR sure if the 4.7 truck block was iron instead of aluminum and what the bottom end was like i.e. how many bolt mains, etc.

Every post I have seen seems to say something like "I think you can use this block with this head" or "I think the truck blocks are iron", but I need some definitive answers here people!

Thanks

-Ethan

 

Hey ethan, Have you tried search on Lextreme's forum? The folks over there seem to know more about the V8.

 

Yeah, we focus on the flagship engine.

 

New platform for ya?

 

Depends on if anyone buys me car

-Ethan

 

BTW, I never even knew there was another forum.. I just joined.

 

I think the 1uz-fe has 8 pistons....and 6 or 8 rods, not sure on that though.

 

This is about as to the point as any other post I have seen regarding the v8

-Ethan

 

it might have 24valves too!!!
i'm not positive either

 

Looking at Toyota's website, it says the 4.7 Tundra now has distributorless ignition! Wouldn't mind finding out a bit more about that.



Cast iron block:
http://pressroom.toyota.com/mediakit.../tundra-s.html