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| 8 & 10 cyl Bristol cars Type 407 onwards - restoration, repair, maintenance etc |
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19-06-21, 07:22 AM
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Kevin the 400 motors do have different heads and you are right this motor with aluminium head different pistons and cam are very popular with the Hot Rod Boys. The biggest difference between the series one and two 383 motor is they are much higher in compression ( approx 10.2 to 1 ) as against the late 383 motors and the 400 which were about 8.3 to 1 . This leads to about 80 more rated horsepower.
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