7afe--7age or 7agze

[perrone721]

Could anyone give me advice for putting a 4a head on a 7a block?
alright i have a 94 st.. that im looking to rebuild the motor and swap the head for either a 4age or a 4agze.

one thing i was wondering is what specific head to look for (out of what car).

also wondering a place to find an exhaust for a st
as well as a good tranny i could swap out as well

[perrone721]

Ive been doing some research, and i found i should use a 4age or 4agze head out of a 88 89 supercharged mr2..... is this true?
help please

i do plan on a supercharger, bigger injectors, rods, camshaft, bearing, rings, and borring out probably .5-1.5mm.
also heard that i need 4agze pistons.. is this true either?

[Donald]

For it to be worth the while, what you need is a Bigport 4A-GE head complete with the TVIS system and Smallport 4A-GE pistons. This is necessary to not drop the compression, and loose the benefit of the 7A stroke, and also to gain the breathing of the Bigport head.
The Bigport ECU is necessary to run the TVIS system.
You will also nees a Porsche 924 or 944 (not sure) timing belt and the timing gear off the 4A-GE crank shaft.
There are other bits and pieces you need that I am not sure of the details about. I think the water pump, and timing gear bottom cover.

I think all the details are in the Corolla Lounge and the 6th Gen Corolla forums. Do a search in those places.