4a-ge head into 4a-fe block...is this possible???

[tt89mw]

I have a 90 celica ST with a stock 4A-FE engine. and my cousin has 4a-ge parts that he is willing to sell to me.

i need to see if the silvertop 4A-GE head would fit on the FE block. i am not sure cuz the head has VVT and its got 20v, while my celica has 16v. so i know extra wiring would be necessary. but I need to see if this can happen...any advice?

[RobMilkshakes]

yes an no. yes the blocks are the same but IIRC some of it will not match up. this has been touched on a bunch over in the corolla section.

When it comes to wiring think of it like the wiring depends upon the head so yes you will need a wiring harness and ecu. honestly its easier to swap the whole engine before you'd put the head on your block. plus you wouldn't get less performance than a stock silvertop due to lower compression ratios in the 4af than the silvertop.

Although it sounds like a good idea, it would be much easier to swap the whole thing.

[4agetercel]

swap the whole engine..... you wont be able to run it off the 4afe ecu either

but to answer your question yes the head head itself will bolt up

[Tercel GTS]

Bolt up yes. Valve hit pistons that have wrong angles cut for the angle the new valves are sitting at, maybe. Doesn't the 4age come with a forged crank and 4afe cast? Should we get into rod specs too?
Swap the whole engine.