318 to 225 swap?

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Steve Hartman - 05 Mar 2008 04:22 GMT

I have a 77 M-886 ambulance built on the W-200. My 318 is kind of ragged
and I have access to a 225. The 225 is out of an 80 car, single barrel.
So, I'm wondering about bell housings from slant 6 to the 727 as well as
torque converters.
True, won't have as much power; but I don't haul much and top recommended
speed for this vehicle is 55 MPH anyway. The front runs 4.10's and the rear
at 4.11's and I've got a special gizmo in my transfer case that cuts the
front wheels out.
So wha's up wi' dat?

Montana thanks you.

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PeterD - 05 Mar 2008 13:54 GMT

>I have a 77 M-886 ambulance built on the W-200. My 318 is kind of ragged
>and I have access to a 225. The 225 is out of an 80 car, single barrel.
[quoted text clipped - 7 lines]
>
>Montana thanks you.

Personally I'd look for another 318... I always had a fond spot in my
heart for the 225 S6, but there are a lot of reasons that I'd never
consider that kind of swap myself.

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Budd Cochran - 05 Mar 2008 19:53 GMT

The bolt patterns are different and the bellhousings are cast as part of the
case, but you might be able to use your 318 trans as a core for a rebuilt
slant six trans.

That's a lot of weight for the 225 to haul around and I don't think you'll
get better mileage. My '80 D-150 (225, NP-435, 3.55 Sure-grip) doesn't do as
good on gas as my '79 D-150 (318, 727, 3.55) because I have to use more
throttle to accelerate and to maintain speed.

Budd

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