[PERUCH]

Chas,
Heads are gt40 early type (C6FE)1.88/1.625 flowed at 219@.550,195@.550,
exshaust stepped 1.5,1.5/8,1.3/4,23in long,
long rod engine (5.506),10.9 CR,
4.020 bore,287stroke,
Custom flat tappet cam:
.601 IN,.595 EX valve lift,duration @.050:265/260,107lobe separation.
Made 463 HP/375 lb torque with stock 1.6 cast iron rockers (FIA rules)!!!!
Regards,
Bernie