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mp67riv

65 Sportwagon Specs

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Can anyone provide insight on the correct rear axle gear ratio for a 65 Sportwagon with the Wildcat 355 set up (4 barrel carb), as well as the potential tow capacity for these vehicles? I'm looking at the possibility of using one for a tow vehicle - pulling an open car transport trailer (aluminum). Thanks!

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Also interested in finding out potential modifications/enhancements that would make it a stronger tow vehicle... Thanks!

 

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Mine is a Wildcat 355, factory A/C; it's got an apparently original 3.08 posi.  But it's obviously an option, can't speak to the one-legger that might pertain.  Ratios are listed in the service manual.

Edited by SBRMD (see edit history)

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The wagon I'm looking at has a 3.55 posi that was recently rebuilt. Not yet sure how the difference between 3.08 and 3.55 will impact highway cruising, but it should give a lift to acceleration. I believe he has a shift kit on the two speed tranny.

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I had a 3.55 posi behind my 300 V8 with a 4 barrel (355 Wildcat).  It was a great cruiser and had a nice grunt off the line.  It was in a 1965 Skylark, not a Sportwagon.  People often overlook the performance gain a change in gear ratio can bring.  My mileage stayed pretty close to the original.

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Thanks much...that is good to know. I was concerned whether the engine would be working too hard when cruising at 65-70 mph.

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