I have a 67 f85 Oldsmobile with 84 chevy 350 motor in it with the stock Oldsmobile ST300 2 speed and want more gears. What would I have to do to put a turbo 350 tranny in it or something standard


Asked by Nov 20, 2014 at 11:39 PM about the 1967 Oldsmobile 442

Question type: Car Customization

2 Answers

James Kitlas

By 2 spd I assume it's automatic. To put 350 turbhydro auto in first check the auto trans fluids lines to the bottom of the radiator & & make sure the the trans fluid capicity is the same. (I'm sure the bigger trans takes more fluid circulated up front too) hopefully the hydraulic fluid line are the same? The longer trans (350) might need a shorter driveshaft, follow. Me, it makes sence. A few ways is. 1. Find a stock one for your car with the longer trans. 2. Go to a driveline shop & have one made they will tell you how to measure yoke or U-joint to U-joint for the driveshaft length. 3. You or someone cut & shorten your old (longer) driveshaft & weld it up. Don't forget a driveline shop to have the shaft re-balanced.

James Kitlas

I had a turbo hydro 400 in a 1990 / 1995 NASCAR clone C-10 full size short bed pu. I lowered the truck 4" front lower spindles & 6" rear with axial flip & C notch in the frame. Airbags were added on last & 225xR17 ft, & 275xR17 rear. Nitto 50 series tires. The 2000 rpm small 9" dia. stall convertor made it more streetable & a must need performance B&M valve body ($19 to $29 bucks cheap) more "chirping bang shifts" & reversed shift pattern from PRD12 to PR123D pulling straight back during acceleration.

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