Re: For Sale: 1968 Dodge Polara show winner, must see photos / rare classic

Steve added these comments in the current discussion du jour ...

>> In the early 1960s, Chrysler had several special programs to
>> add oomph to the little engines of the day, e.g., in 1961,
>> there was a set of parts comprising what was known as
>> Hyper-Pak for the 170 CID Slant Six that had a small Carter
>> AFB on it, very long intake runners to simulate the effect of
>> a Long Ram engine, and later that year, they added Hyper-Pak
>> to the 225. When the latter was coupled with the aluminum
>> block engine - very short lived because it weeped oil through
>> the ****ous block metal, it was a pretty  potent engine
>> compared to a Corvair or Falcon. 
> 
> Never heard anything about the AlSl6 weeping oil. I know 80s
> Cadillac blocks did that (heck, some Northstars still do!),
> but the AlSl6 block was die-cast, not sand cast, and therefore
> pretty solid not to mention ahead of its time. Way expensive
> to build, though, and I always understood that was what ended
> its production run. 

Well, they did, albeit not majorly since not all that much oil 
flows through/past the block proper. The aluminum Slant Sixes 
also had structural problems, leading to catastrophic engine 
failure, were expensive to manufacture, and the weight savings 
did not justify the warrenty and manufacturing costs, hence they 
quietly faded into history.
 
> People are still having fun with those engines, though. Doug
> Dutra is building a modified aluminum 225 right now and
> do***enting it on slant6.org. 
> 
Thanks for the heads up. The WPC Museum has a really nice one on 
permanent display in Boss Chrysler's Garage, i.e., the basement.

You are correct on all counts for the reasons you cite for the 
demise of this engine, I just added some lesser known issues.

-- 
HP, aka Jerry