View Full Version : Probably a dumb question

04-25-2007, 01:49 AM
this might sound dumb but

for a 4A-FE couldnt you just swap the head for a G style head... turbo it and end up with a 4A-GTE?

i dont see why not but if it were possible it would probably be done already so im just curious to see why it doesnt work.

04-25-2007, 01:59 AM
you need to electronics from the G head. So you might as well swap in a 4age/wiring/ecu. THen boost it and you have a 4agte. YOu cant just swap heads and not ecu.

04-25-2007, 02:38 AM
You COULD swap heads and go standalone, which would kill two birds with one stone eh?

04-25-2007, 09:13 AM
It has been done.

Celicas are more common with a 5SFE stock, thus more Celica guys go with a 3SGTE or hybrid.

Corolla guys only got A series motors, they have been doing wacky shit with them for years.

04-25-2007, 02:32 PM
Not really any good gains from just swapping to a 4age or 4age head if you are going to turbo it. Turbo the FE, much easier and the FE cam setup will do well with FI, power will trail off in the top end a little more, but not a big deal as if you were looking for big power you'd need cams anyhow.

04-25-2007, 09:14 PM
4afe internals won't take the abuse the ge stuff will.
cranks are different, on early 4age the rods were the sameas a 4afe, but pistons and crank, flywheel are different.
better to get a 4ag## to start with.