I suspect that those tempests were influential in the development of the gto a year later.
I think i remember that GM decided to quit supporting factory racing sometime in 63. By 1964, all the factory supported pontiacs and chevys were gone, nascar and nhra. Thats why the rest of the decade was ford vs mopar.
Yeah my stepdad Bob race a 64 GTO in H/SA IIRC late Dec. 1963
he got his from Meridian Pontiac in Concord Ca., he knew someone deal
(as he'd call it) raced it too, until late 1968-ish
later other GTO's & Firebirds, mostly out west all up & down Calif.
(he knew Mickey Thompson, another Pontiac guy, thru his buddy Wes)
it was all backdoor stuff, back door engineering stuff
Pontiac
was a real player, so was Chevy
(even Old's to a lesser extent, Buick was too, not as much Drag Racing)
just
not openly supported by the factory
they had factory-sponsored guys, thru the back door channels
engineers & parts help etc., just all hush-hush
not much in the body in white deals like they did prior
I know most here probably know this too...
John Delorean was one that "allegedly" promoted it
he wanted the 64 GTO/Tempest platform performance options
light 2 dr midsize car with big engines
(what became, the term quoted by some journalist 'the Muscle car formula')
& Pontiac heads/beancounters
'fought him' the whole way
you could get it (perfomance stuff) in a special order package org.
like the Bobcat, special dealerships
(sort of like the COPO program from GM/Chevy later)
until they saw the 64 GTO was selling
to the youth crowd 'like hotcakes'
they started to even promote it
'the "
tiger" under the hood performance aspects' in 1965
later even the 400cid Ram Air III or IV
400 Firebird or Trans Am, the 455cid SD, 'the Judge', etc. etc. etc.
I was just a lil' dude, when it was happening
I didn't start even going to the track with Bob until 1966-67
I was 7-8, when he 1st started taking me...
I loved it...
I was addicted to Fuel Altereds, Gassers & AFX Cars