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Old 02-10-2018, 01:40 PM   #26
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Join Date: Oct 2016
Location: Dallas Texas
Posts: 1,273
Re: Best fuel efficiency

Every time I get in the wife's commuter ( 2013 honda CRV ( 4 cylinder engine/ 4 speed OD tranny/ front wheel drive ), I think with amazement how it would probably outrun my first car: 68 chevy step 350/350 and get better gas mileage while doing it.

The thing is geared for quick speed off the line and low RPM cruising at freeway speeds. Plus it gets 25-27 MPG.

It's just the perfect little go-getter that is designed specifically to do just that.

What would happen if I did a driveline swap from the CRV into a 67-72 short-fleet? I suspect the tranny wouldn't last very long, but...

Both vehicles weigh about the same 3500 for the honda and 3800-4200 for the truck, so we're close there.

Brick vs. wedge:
The CRV is a nice wedge shape
The Truck is a brick

Front vs. Rear drive
That would take somoe doing, maybe mount the motor normal ( not sideways ) and adapt a 200r somehow? Swap in the entire front CRV clip?

My guess is that a swap like this, would not yield the same 25-27 MPG out of the truck. The extra weight combined with the added wind resistance at speed and other detriments like rolling resistance and mechanical power loss through the tranny and diff would kill the highway mileage, probably down below 20.

67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi
07 335 sport turbo 6sp
94 Trans Am GT LT1 6sp posi -- sold after 22yrs
99 540 sport V8 6sp -- sold
73 240z L24 4sp -- given to friend
68 C10 step 350/350 3.73 open -- sold
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