2892093 transmission is a well-built unit, on street tires you should have no problems. The problem occurs when you have slicks (sticky tires) and you launch the car hard and the tires don't spin, that's when parts in the transmission start to break!!
Transmission 2892094 for a 1969 Hemi 426
Hemi Transmission has 21/2 in wide kick down band, 5.1 kick down lever and 5 clutch front drum, 4 pinions front, rear, and takes a 19 spline converter.
Tony 69. You should use a fusible link that it 4 time smaller than your AWG wire size. Us an AWG 16 fusible link to protect AWG 12 wire. You want the fusible link to blow first, so you don't fry your wire and anything else.
He might get away with just a metering rods change, too. He should have the Edelbrock chart that helps with installing the correct metering rods for different situations. An air fuel ratio gauge is a great tool, it allows you to see when it goes lean or rich.
On street tires and an auto transmission, you will have no problems. They start to break when you have a manual transmission and the tires have good grip (slicks). Had a 741 - 3.91 gears in a 70 Challenger 440 and a 727 on BFG...
My 1970 Sport Satellite with bucket seats had little round black spacers installed from the factory to raise the seat height. I removed them to lower the seat for more headroom. I'm sure they used them for bench seats too. Check and see if your car has them? I just checked my 1970 Coronet, it...