I think that the transvair conversion is the best way to go with air cooled westy's. It uses the corvair engine and transmission instead of the van engine and tranny. The engine has a stock horse power of 110 and fits in the bay window vans like it was made for the van. The kit uses a corvair tranny because a corvair engine runs counter clockwise and the vw runs clockwise. The tranny is considerably stronger and holds up to big v-8 conversions in the corvair. Corvair used three tranny's dureing its life, a three speed manual,a four speed manual, and a two speed auto that all performed well in the corvair cars and vans. The transvair kit is available for the 2spd auto or the 3spd manual (the 4spd is two long) at Clarks corvair with a variety of other stock and performance parts for the corvair. corvair underground is another supplier of corvair parts. Don't get me wrong i love the vw engine but it is just to small for a van and I'm not about to find a place for a radiator on an air cooled van.
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