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Author Topic:   Cleveland stroker stuff
Mpcoluv
Gearhead

Posts: 945
From: Charlotte NC usa
Registered: Apr 2001

posted 04-10-2003 02:04 PM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
While being depressed over my 372C problems, I have come up with a easy 351C stroker...
Castillo's crankshaft will offset grind a new crank (including 351C core) for around $300.
KB-silvolite makes a 1.44 (vs. stock 1.6xx) comp height flat top cleveland piston (for use in a 372 Clevor). Have the crank ground to 3.64 stroke, and use GM Performance parts 5.94" rod. Then you have a 372 that can be rebuilt from any pep boys. The Hypers pistons and the rods would probably not be adequate for more than 500hp.
My current stroker uses custom Lunati pistons and mopar 6.123" rods narrowed to .890 ford width. The 340 mopar rod bearings are narrowed to a custom dimension on a lathe. I am now told however that the Mopar 3.9 Dakota V6 based on the LA engines uses a narrower rod bearing because of the split throws....
Anybody got a bearing catalog?

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Mpcoluv
Gearhead

Posts: 945
From: Charlotte NC usa
Registered: Apr 2001

posted 04-11-2003 03:43 PM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
My stroker was done the "Old school" way....
Using an offset ground "C" crank with the stroke being 3.64. The rod journals are Mopar diameter (2.125) but standard Ford width.
The bearings that got fragged in the cam destruction were narrowed on a lathe to the "Ford" width. It turns out that there is an "off the shelf" bearing that will work.
A Mopar "LA" based 3.9 V6 rod bearing is the same width as a cleveland rod bearing. So on my "test" rod it looks like I won't have to narrow any bearings.
With any luck the second build of this motor will be easier.
I might be able to break it in on an engine Dyno also......

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