if off rding the 6 is better in my mind (& this is 1 of the best) as tq comes on early (low rev grunt) & therefore avoids spinnin tires in the loose. Measure every thing as U disassemble. This way U can tell machinist what to do & order - if U want him to). If U dont guid them they take control over the decisions. I might ask fora 3< valve job'n hardened seats (esp exh.) as no more lead in fuel & the modern way. Also cam grinds have come a long way. Pick a modern w/use of vehicle in mind. U can build the motor around that - 80% of the RPMs and octane selected. Every automotive Q is answrd by "What is the application of this vehicle?" even more important in a multipurpose (rd & off rd, unless it will be dedicated to one) rig like ur own. Congrats on the decision to rebuild. May B a vid on this (for U 2C any anomalies w/the ol AMC in ur garage). Lots of research comes 1st (plez) a plan U carry out to the end (no changes mid stream) have a 'system' that is 'congruen't, nota hack job. Dont forget: degree in any/every cam ever installed. I like these guys:
