if its kind of a thump in first only, check your drive line. the guibo, rear trans mount, carrier bearing and support, u joints and such can do this.
my 74 used to have 4 thumps in first, sometimes 1 or 2 in second if I pushed really hard.
cliff
my 74 used to have 4 thumps in first, sometimes 1 or 2 in second if I pushed really hard.
cliff