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Not sure if there is any difference in diameter or strength from the factory but length was the same. I swapped from a 727 to a 833 and used the same drive shaft.
If you have a two piece shaft with a rubber isolator you should change it out for either transmission.
I love big blocks and wouldn't hesitate to make the upgrade. Not knowing your skill set, budget and amount of free time, I suggested building on what you already have. If you absolutely, positivly have to have a big block here's what you need to get you started.
When looking for an engine to...
Dieseldazzle,
I'm looking for the link and having a time finding it. I've done it to 2 of my big block cars and it made difference on both. I think i used a 3/8" pipe tap and an oil passage plug. You can drill the center of oil plug with a 1/8" drill bit. This just limits how much water gets...
A flex fan will move more air than a stock one.
Not sure if i picked up this tip here or from For c Bodies. Under your thermostat in the cast water pump housing is a 1/2" hole. I drilled and tapped mine and installed an oil passage plug (Allen head pipe plug from a big block)with a 1/8" hole...
You can drive yourself nuts with what ifs. If you follow the list I laid out for you, it won't disappoint. If you go for a hot cam better still. Be careful
Going with too much cam on a 383 it will loose bottom end then you'll have to go with super low gears and a loose converter. Not fun if you...
If you do change the cam. You need to make sure your valve springs are compadable with your new cam. Be sure to use ZDDP zinc additive in your oil for cam break in.
Street Demon 750------$320
Weiand dual plane intake----$225
3.55 gear---- $200
Gear install kit----$100
Valley pan with heat crossover blocked( comes with intake gaskets) at summit $28
Electric fan ( reduces drag on engine) not needed but every little bit helps ---- $125
10-3/4" factory high...
One more thing. Don't overlook the street demon 750 carb. I have one on a 440 and it does everything well. At $320 for an electrician choke model it's hard to beat.
Someone suggested 3.73-3.91-4.10 gears. These are a huge jump from your 3.23's. If you're going to have to do any hyway driving stick with the 3.55's
If you use an edelbrock 750 carb I suggest you change the accelerated squirter nozzle to a "24" and set the actuator rod to the closest hole to...