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Writer's pictureMr. Headley

VQ35de FWD vs RWD

Updated: Sep 19, 2019

Mounting Comparison

RWD:

Large bolt pattern, maybe 8"x5" (from memory, definitely not accurate)

Mount cast positioned towards the timing cover

FWD:

Small bolt pattern, maybe 4" square (from memory, definitely not accurate)

Mount cast positioned towards the end of the block

Accessory/Manifold comparison

RWD:

Exhaust manifolds/headers curve backwards, away from the motor mounts

Accessory mounting points are located vertically along the front edge of the block (these are for the AC compressor, IIRC)

FWD:

Exhaust manifolds/headers head straight down, motor mount is offset and doesn't get in the way

Accessory mounting points are located horizontally along the lower edge of the block To use a RWD block in a FWD chassis

Custom motor mounts that extended towards the trans to utilize the center crossmember. Would most likely be weaker than the stock FWD mounts (on the FWD block) unless you braced the hell out of them.

Custom headers made to stretch around the custom motor mounts made above - as you can see the RWD mounts are just plain in the way of any sort of manifold that comes straight down.

Custom mounting brackets for all of the accessories, or try to customize the RWD accessories/mounting rails to work

Benefits of using a RWD block in a FWD chassis (assuming it will ever be done, not likely)

Turbo manifolds could go directly over to the driver's side without the typical FWD mount interference

Engines may be easier to find

Possible ability to use the revup engine (with all associated electronics of course)



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