[Tigers] MK II 289 dyno tests

[Thomas Witt]

Alex,
  Do you have a  more definitive breakdown on the cast manifolds?  I'm 
curious if the differences were closer at lower RPM's.

  A number of years ago a Mopar magazine did test with a moderately built 
360.  At 5,000 stock 318 cast manifolds were within 10 HP of $800 TTI 
headers.  Mopar also had their version of cast "headers" from the 340 engine 
(about $300-$400 a set). They were only up 5 HP.

In this case the headers seem to really make a difference - at least at 
5,000 RPM.
Tom