Join Date: Nov 2003
Location: Eastern Suburbs Melbourne
Re: I need help picking out parts for a 408C
Just finished investigating the 408C kits and eventually went for the 383 being the safer option. THere was to many variables in building a 408 stroker in a standard block. I know...as stated by XD408, it can be very successfully done but forking out all that money to have something that may work was to much of a risk in the end. The 4.000 crank and the necessary 6.200 conrod just leaves no material for the piston to be successful if you have the conventioanl std 9.200" deck height block. As falcon coupe says, the Dart block with the 9.500" D height is a simple fix.......expensive fix at about AU$3600. On the 408 combo a dish piston should be required to give about 11-12cc required but a dish piston is impossbile at the 1.000" pin height that would be needed to fit. The counter weight can be machined down on those cranks (3.750" stroke crank Eagle for the 383 and 4.00 for the 408 ) allowing to run a 6.0" rod and making th piston to fit but the balancing can get all out of wack and very expensive to get fixed. with the set up I am using on the 383, flat tops can be used using a 64cc chamber from a 3V alloy head giving 11-1 comp and this.....hopefull equates to oodles of torque and HP....especially for the street.
BUT....this is my findings only and please if...as XD408 can testify.....it all works for you, go ahead....
'73 Landau/ ZJ Fairlane/ AU ghia/ BA XR6