whats diffrent between 87 and 89?

IJ.

Grumpy Old Man
Mar 30, 2005
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I come from a land down under
I've ran both in 7M's with standalone ECU's so have a raised RPM limit and the 7M crank is happier at all RPM's from idle through to 7700.

Main reason I wanted one is for the bearing longevity at higher rpm's.
 

boost fiend

Banned
Jul 24, 2005
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Rockford, Il
ok, i get it now. figures toyota would mess with ones mind like that.

so, would it be cost effective and/or worth having the 6m crank balanced?
i get cheap maching done through the shop. it was just a thought.

other than the crank and body, the wiring harness is diffrent. are there diffrences in the afm? any and all sensors?

i plan to leave it mainly stock(prob only gonna change some of the ic pipes and take the cats out.). i need ideas.