You would have some missing headbolts.
There was a guy on another board claiming to have 3.4 heads on a 3.0 and after going out to the shop and looking I thought to myself BS. After staring at this crap and thinking maybe there was a year change I called in the Toyota gurus.
Tim at DOA racing said noway because of headbolts and valve timing, John at LCE said the samething, and Ted at enginebldr sent me a very colorfull and detailed email confirming what the other guys had said.
>>>*I spend a lot of time trying to figure out how to get something that doesn't belong into a place it won't go.
I remember being about 8 years old and the engine in my Dad's 1940 Chevy went "Clunk!" and quit. Dad called it his "Crummy", it was the ranch work rig, he had floated it down the river from Toledo on a log raft. Back then there was no road to our ranch which is a place called Boone Island, so just about everything came down the river, even a TD-14 bulldozer and a 1948 Farmall "M" tractor which we still have on the ranch.
Which reminds me, I need to go down to the barn and start that up.
So Dad took the boat to Town, two of my brothers and me went with him. He found and bought an engine, it was a Chrysler flathead. He paid $40 for the engine and transmission. The four of us rassled the thing onto a float and back home we went, towing it behind us with the old boat. We beached the raft and then had to drag the engine up the bank, I had mud up to my..well, you know..
Dad made some mounting brackets and stuffed the engine into the old Chevy, welded one end of the driveshaft to the other end, fired it up and back to work he went. I remember that well, I was the one that got to cut the shafts off with a hacksaw. (My other two brothers were bigger than me back then, and my little brother was too young and good at hiding when there was work to be done..*still does, in fact.)
Later on after I sorta wrecked the crummy by running it into the rear end of Dad's winch truck he pulled the old flathead out and stuck it in his 26' boat.
*Ever see a boat with a 3 speed transmission? (She trolled good...*LOL**).
The point is like my Dad said. "If ya got a cutting torch and a file you can put anything into anything..."
*Well...probably we aren't going to put 5V heads on a 3V block, though....
Now the Camry heads?...*Course, if we wanted to do that, why not just go get a Camry engine?
It's amazing how much more power we can get out of four little valves as opposed to just two bigger ones. Things like airflow, fuel distribution, etc, all count up.
10-20 ponies doesn't sound like a lot of gain, but when we realize that is all net to the driving wheels...it a LOT!...*EB
