Continuing the Saga...
Well... the Toyota 3F is certainly bigger than the 350, but doesn't come out nearly as clean. The 3F engine/ECU harness does contain some wiring that must be cut out and reinstalled to keep the instrument cluster talking to the tranny and transfer. Luckily, the engine ECU for the GM can be wired to fire the same warning lights as the 3F ECU.
The two white, rectangular plugs (IH1 and IH2) and about ten of the associated wires must
be uncombed from the 3F engine's ECU harness. They carry the instrument panel light
tallies, Neutral safety switch and the Ignition start and run connections. The white
connectors live behind the glove box and can connect to the GM harness at that point. The
grey connectors on the right tie into the four harnesses running down the tunnel to the
transmission and transfer case. Also, there is a White with Black stripe ground wire
running out of the largest grey connector to the engine harness. This wire is
grounded in the 3F engine harness (you'll have to cut it out to free it from the 3F
harness) and you will need to ground it to the body or motor to keep the transmission
indicator lamps operating correctly.
The Mark's kit has had a few snags to overcome,
but nothing major. The inconsistencies are apparently due to Australian and USA
differences in GM (or Holden) products. The bolts supplied for bolting the Toyota flex
plate to the crank extension were the wrong pitch... We substituted bolts from a 22R.
Also, the dowels supplied for the crank extension are far too large for some reason.
Again, the 22R parts bin provided dowels of the proper size. Others who are using
this same kit have reported that the supplied bolts were correct, so my problem may have
just been an oversight.
One more note... The Mark's kit engine mount arms
are not for current model small block motor mounts. You will need the engine mounts used
on small blocks in Corvettes from 1963 to 1982. The Sealed Power part number is 270-2285
and the GM equivalent is part number 625-8154. Your local 'Vette performance shop may be
your best source for finding these mounts in stock.
