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OHV Challenger Block 103CC using Roger
Butzen conversion plans, from that I have developed casting of the
blower and the heads, valve covers. the cam is 280 Duration and .105
lift ,lob split 114 deg. .the crank is a one piece 4340 , I machined it
to a 90 deg. index and I'm using mike Neal's hall effect system , and
firing it using a crank trigger . plug wire are made by mike too. oil
pump is a gear drive and I use the stock challenger water pump to
keep the engines cool. the blower puts out 6 PSI boost and makes the
engine rev very quick . I run them on 114 octane racing gas with lead.
took me 13 months to build 3 engines with the help of my good friend
Dwight Giles & body..
Click here for a short
video of the engine running.
More details about the engine and a video of it running can be found at
Copyright 2003, Florida Association of Model Engineers
and engine builder as noted above,
All rights reserved.