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Posted for Jack Cowell <jackcowell@optonline.net>:
You should talk to Bob Minnis who is an ex-TCM engineer, and a former IVP
driver who did much of the development on the TCM 550 series. If you'd like, I
can give him your email address so he can contact you. BTW, Bob has told me
that box stock TSIO 550's frequently dyno tested at above the 350 bhp they
claimed. Therefore, any "performance mods" that claimed 370 bhp were really
only giving the customer what he/she had straight from TCM.
Douglas Brunner wrote:
I just watched my engine get dyno tested. It is a normally aspirated IO-550N EXP with 10:1
compression and magnetos. It made 325 hp at 2700 RPM.
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