10/04/2026
’66 Pontiac GTO Butler 535 in New Zealand *details below*
Engine & Performance:
* Butler Performance 535ci
* 815 hp at 6500rpm
* 686 ft-Ibs at 5800rpm
* Runs on pump gas
* Handles like a Pro Touring car
* IAII (Indian Adventures 2) block
* Splayed/registered/billet 4-bolt main caps
* Eagle forged crank & H-beam rods
* Ross forged pistons
Cylinder Heads:
* Butler Performance custom grind
* Solid Roller .742 / .706 lift Duration السويدي 284/292.
* Edelbrock Performer RPM Wideport 87cc
* Heads CNC ported to 370cfm, 3-angle valve job
* Ferrea s/s Valves 2.25 intake and 1.74 exhaust
* Comp Cams springs, locks and titanium retainers
* T&D offset shaft roller rockers (1.65/1.66)
Drivetrain:
* Wheels by Custom RC components
* 17x4.5” fronts, Mickey Thompson Sr 26x6x17 tires
* 15x14” rear, Hoosier 31x16.5x15 Prostreet Radials
* Wilwood brake disks, front & rear callipers
* Wilwood main master cylinder
* TH400 transmission with carbon fibre shield, by Chuck Mann
* Manual valve body, race clutches, bands
Via: Darryl Ingham
🇺🇸 Musclecars Universe 🇳🇿
This is pure Pontiac power.
All the parts in this build are available on our site, or you can get the whole combo as a shortblock or longblock kit ready for assembly.
Questions or quote requests: [email protected]
More info about our products and the Butler Process: butlerperformance.com
