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Greg Ondayko
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PostPosted: Mon Dec 20, 2010 7:06 pm 
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Location: IRWIN PA
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with a bore between 89,5mm to 91,5 depending on the year.
The rods were between 189/192mm center to center distance, CR was set at
Wow, thanks Martin!!


So 7.44" / 7.55" rods with 3.523" to 3.602" Pistons.


Some long Rods there with Soem massive overbores too.. I have never seen anyone go beyond .180" overbore. ( I believe Bren's Old motor that Now resides in Lou's Slant kota is around ~.180" Overbore.


Anything special done to the Cylinder Block to take such a large piston on the 91.5mm bores?


Greg

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Greg Ondayko
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PostPosted: Mon Dec 20, 2010 7:15 pm 
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Uhmmm...
A .030 over bore (3.430) with a 198 crank throw (3.640) gets you 201 CID.
Basically a .030 over 198... and that explains the RPMs
DD
So the 198 Has a shorter stroke that Allows it to rev higher?


Thanks,

Greg

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Polara1974
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PostPosted: Tue Dec 21, 2010 4:31 am 
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Anything special done to the Cylinder Block to take such a large piston on the 91.5mm bores?Greg
The "906" casting Blocks have stronger mains and thicker cilinder walls and also with the core shift moved to the "good" side!

This block was modified by the Bellavigna Brothers in the mid to late '70 along with Chrysler to produce them for the ACTC cars, but they have to put them on the regular production cars to homologate it. You can find this block in 1979-1980 Dodge Coronado and 1979-1983 Dodge 100 Trucks. I have mine!!!!!!!!!!!!!! :D

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Doc
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PostPosted: Tue Dec 21, 2010 9:21 am 
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...So the 198 has a shorter stroke that allows it to rev higher?
Yes... a 198 has a 3.64 stroke. (just over 3 5/8 )
DD
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Greg Ondayko
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PostPosted: Tue Dec 21, 2010 9:39 am 
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Thanks to all!


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