Toyota manual - Advance Adapters

CONVERSION APPLICATION SUMMARY
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1986-95 TOYOTA 4WD (I.F.S.) - CHEVY V6 & V8/BUICK V6 using the stock 5-speed:
On Toyota conversions that are equipped with the I.F.S. suspension, you will have considerably more conversion expenses than
the earlier model solid front axle vehicles. The following information covers Chevy V6, Buick V6, and Chevy V8 conversions retaining
the stock Toyota 5-speed transmission.
A. Clutch Assembly: When using the new bellhousing, We recommend a 10-1/2" clutch
assembly. The Chevy flywheel is a 153 teeth, and the Buick flywheel 160 teeth. The
recommended clutch assembly would consist of a high diaphragm Centerforce pressure
plate, P/N CF360056, and a custom made 10-1/2" clutch disc, Part No.
716105, that has a 1-1/8"-21 spline shaft size. The release bearing is the short
Chevy design, Part No. N1430.
B. Motor Mounts: Due to the I.F.S. front axle and the torsion arms located on
the inside of each frame rail, we were obligated to manufacture an engine mount
that would directly bolt onto the original Toyota frame perch. We offer motor
mounts that have been multi-drilled for various installations on I.F.S. vehicles.
The mounts must be used in conjunction with the original Chevy block rubbers. The
rubbers are not included with the our motor mount kit. You can order these GM rubbers
under our P/N 4980, (GM Part No. 3990914 or Napa No. 6021106).
C. Engine Location: Since these vehicles are equipped with an independent front suspension (I.F.S.), the engine location
cannot be varied. Things to still take into consideration are height of engine, distributor, and radiator clearance. Slight firewall
modifications may be required.
Using the stock 5 speed with
bellhousing P/N 712561
D. Suspension & Body Lift: When doing engine conversions on vehicles equipped
with the I.F.S. suspension, your vehicle must be equipped with a 3" minimum suspension lift.
We highly encourage all installations to use a suspension lift. The modifications that are
required when not using a suspension lift are considered
major. The design of the I.F.S. front axle does not permit
clearances around the 4.3 V6 or V8 oil pans. For customers
wanting to keep their truck at the stock height, special
modified oil pans for V6 & V8 installations are available. A
minimum of a 2” body lift is required to provide the necessary
engine & transmission tunnel clearances.
E. Driveshafts: On V6 & V8 engine conversions retaining the stock transmissions, the driveshafts modifications may still be
required depending your specific application and engine location.
1986-95 TOYOTA 4WD (I.F.S.) - FORD 289/302 V8:
Ford V8 installations into Toyota trucks are becoming more and more popular. The Ford engine is narrower than the Chevy V8; and
this provides a better exhaust system clearance on engine conversions.
A. Suspension & Body Lift: Unlike the Chevy engines, where a suspension
lift is mandatory in order to eliminate oil pan modifications, a Ford installation only
requires minor modifications. A suspension lift is not required, but a minimum 2”
body lift is still recommended.
B. Oil Pan: On Ford engine applications, we do not offer a modified oil pan, but
the Mustang dual-sump pan will fit well with only minor modifications. You will need
to provide a cutout in the front portion of the rear sump. With this modified oil pan,
the installation will not require a suspension lift.
C. Exhaust: The exhaust system can either be early Maverick style manifolds or
our SlickFit headers.
D. Transmission Crossmember: The length of our transfer case adapters are designed so that the engine can be positioned
without relocating the transfer case. For example, a C4 assembled to the adapter housing will be relatively the same overall length
as the stock 5 speed transmission that you are replacing.