WHAT DOES TOYOTA 4AGE BLACKTOP ENGINE FOR SALE MEAN?

I actually did not Consider they did Considerably within the bigport and smallport? I'd a S/T 20v as soon as that hated lifestyle when it was disconnected..The five valve head is Toyota's reward into the 4AG once the 4AGZE went away. With the extra valve and unbiased throttle bodies- the 4AG 20 valve is a novel head structure. This head regretably