Originally Posted by
EagleMark
1. The heads have the conventional 12 bolt intake manifold attaching design used from 1955 through late 1980?
2. 326 lb-ft of torque @ 3750 RPM
3. Duration @ .050" (222°Int/222° Exh)
4. That engine sucks compared to next one up with more HP and lower tourqe RPM.
As a rule of thumb EFI cams can be tuned with Flat Tappet Duration @ .050" (214°Int/224° Exh) little less on engines smaller then 350ci and a little more on engines more then 350ci
Yes bigger cams can be tuned it just a lot more work.
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