1970 Pontiac GTO
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Transmission: Tremek 5 Spd Manual
Exterior Color: Green Interior Color: Black/white |
Fuel Type: Gasoline
Engine: 400-cubic-inch V8 Mileage: 60,975 |
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This 1970 Pontiac GTO has undergone a comprehensive restoration, highlighted by a conversion from the factory TH400 automatic to a close-ratio Tremec TKX 5-speed manual. The swap includes a hydraulic clutch system with a pedal-mounted master cylinder, all sourced from our friends at @americanpowertrain. To complement the new transmission, we replaced the 3.21 rear gear with 4.11s from @motivegear, paired with a new Dura Grip LSD unit from @yukongearandaxle. A custom harness was built with the correct connectors for the reverse lamp and neutral safety switches. We also modified a factory 4-speed console, added a Lokar boot, and finished it off with a factory-style trim ring. The results are outstanding. The car not only drives better but is far more cruise-friendly. With the TH400 and 3.21 gears, it turned about 3,500 rpm at 65 mph. After the swap, the 400 now runs just over 2,400 rpm at 70 mph—all while delivering a noticeable increase in low-end torque. The ’70 GTO is finished, headed home, and ready to be enjoyed
ENGINE:
*Numbers matching 1970 400ci block 1970 RA3 heads. .030” over bore with teflon skirted
aluminum pistons.
* Butler spec billet hyd. Roller cam, 282/288 dur. 230/[email protected]” .510/.521 lift 112 deg LSA.
* Morel tie bar roller lifters
* PRW stainless 1.5 roller rockers. Poly locks.
* Butler chromoly pushrods.
* Butler performance high pressure oil pump.
* Billet double roller timing set.
* Milidon cadmium plated oil pan standard capacity.
* Edelbrock performer pontiac dual plane intake manifold.
* Pertronix flame thrower hei distributor conversion with composite drive gear.
* Doug's 1 3⁄4 ceramic coated long tube headers. 2.5 inch stainless cat back exhaust.
DRIVELINE:
*Tremec TKX 5 spd manual conversion.
* Lakewood sfi steel bellhousing.
* Malwood under dash clutch master cylinder. Remote reservoir and Hydromax internal slave.
* Spec stage 2 clutch. And sfi rated steel flywheel.
* custom shifter assembly installed into factory 4 spd floor console.
* custom 3” steel drive shaft with upgraded 1330 joints.
* Motive 4.10 ring and pinion with timken bearings.
* Yukon duratrac limited slip carrier.
SUSPENSION:
*Upgraded front and rear sway bars.
* BMR adjustable upper control arms.
INTERIOR:
*Power windows
*Power driver's seat
*Factory air conditioning
*Hidden audio bluetooth receiver and custom auto sound kick panel, dash and package
speakers.
*Numbers matching 1970 400ci block 1970 RA3 heads. .030” over bore with teflon skirted
aluminum pistons.
* Butler spec billet hyd. Roller cam, 282/288 dur. 230/[email protected]” .510/.521 lift 112 deg LSA.
* Morel tie bar roller lifters
* PRW stainless 1.5 roller rockers. Poly locks.
* Butler chromoly pushrods.
* Butler performance high pressure oil pump.
* Billet double roller timing set.
* Milidon cadmium plated oil pan standard capacity.
* Edelbrock performer pontiac dual plane intake manifold.
* Pertronix flame thrower hei distributor conversion with composite drive gear.
* Doug's 1 3⁄4 ceramic coated long tube headers. 2.5 inch stainless cat back exhaust.
DRIVELINE:
*Tremec TKX 5 spd manual conversion.
* Lakewood sfi steel bellhousing.
* Malwood under dash clutch master cylinder. Remote reservoir and Hydromax internal slave.
* Spec stage 2 clutch. And sfi rated steel flywheel.
* custom shifter assembly installed into factory 4 spd floor console.
* custom 3” steel drive shaft with upgraded 1330 joints.
* Motive 4.10 ring and pinion with timken bearings.
* Yukon duratrac limited slip carrier.
SUSPENSION:
*Upgraded front and rear sway bars.
* BMR adjustable upper control arms.
INTERIOR:
*Power windows
*Power driver's seat
*Factory air conditioning
*Hidden audio bluetooth receiver and custom auto sound kick panel, dash and package
speakers.
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