Strictly Attitude wrote:Bet you are excited to get it back in the car and cruise again
Its not so easy to install a Modern Trans Behind an early 1955-1963 Pontiac V8 287, 316, 370, & 389 Cubic inches.
They had different bellhousing bolt patterns than we are used to with 1965-81 Pontiac V8, Oldsmobile V8, & Buick V8-V6 & Chevrolet Gen 1 SBC & BBC.
I have to fabricate a transmission adapter plate. I wish to bolt the 1959 Pontiac 389 behind one of my Pontiac Turbo 400's.
The Motor Mount pads are in the right location for my 1963 Pontiac Grand Prix & use the same engine mounts.
I can buy an aftermarket early Pontiac block adapter plate to an Later 1965 & Up Turbo 400. Has universal BOP & Chevy Trans bolt patterns.
They cost $700.00 - $900.00.
Or I can find an early 1958 -1960 Pontiac Manual Transmission Bellhousing, that allows me to use a Muncie 4-speed transmission. Seen them on Ebay & guys sell them for $700-900 bucks.
I did get the Superhydromatic transmission bellhousing & Flexplate & Special 1959-1960 only starter motor so I can fire up this 389 engine when ready to. Test Stand test it out.
I found Blueprints to Fabricate the Trans Adapter plate. Written up by a Pontiac GM Engineer & signed off by him.
A Fellow Pontiac guy from Illinois left it for me on another Forum.
The Pontiac & Olds Superhydramatic is a very good automatic transmission from what I read. 4 - Forward Gears.
But has no torque converter, has 2 separate Fluid couplings internal / Dual Coupling - No fixed stator to make it a True Torque converter.
Guys claim they are the most Power Efficient GM Auto transmission till The GM 700R4 came out in 1982 & finally perfected in the 1987 Corvette.
I have a 1964 Pontiac Superhyromatic trans here, wrong bolt pattern for the 1959 389 Pontiac engine. Its a Rare Bird also because its an All Aluminum Case unit(1964 Only) where earlier Superhydramatics were All Cast iron case transmissions.
Oldsmobile used the same transmission behind their 394 ci V8 Big Block Cars, called Super Jet Away transmissions.
The early 3 - speed GM Transmissions were crappy for Drag Racing I have read. Only Manual trans offered in 1959 By Pontiac.
Borg Warner 4- speed manuals were delicate & known to fail drag racing hard in the Early C1 Corvettes.
It was until 1963 When the GM Muncie 4-speed was released.
The Drag Racer choice of manual transmissions back in the 1950's was an early 3- speed manual. The LaSalle transmission. Used 1937-1938.
Was found to Bullet Proof. Mickey Thompson pushed over 750 HP through them. GMC 6-71 Supercharged 1959 Pontiac 389's running on 30% -90% Nitromethane Fuel.
The 1st Modern transmission 100 % Bullet Proof with a full functional Torque Converter was the GM Turbo 400.
1st used by Cadillac in 1964 Only.
1965 Pontiac, Oldsmobile , & a few Chevrolet cars used the Turbo 400.
Still the #1 Transmission in Drag Racing today. Guys are pushing 4,000 HP through a Built Turbo on Drag Strips Nationwide today.
STREET OUTLAWS....ALL USE THE GM TURBO 400.