yeah doyon they're a lot cheaper than that, for what you would need, trans, bellhousing, driveshaft, and possibly crossmember(not sure if they're different or not) i would expect to pay around 2500-3k for one out of a cobra. with that said the totally stock unit will handle that power range. only big thing you'd have to do for more horsepower than what you said would be a 26 spline input shaft. those are a little over $300 and with that you could handle 6-700whp.

 

I ordered a rebuild kit, with all the upgraded parts for the problem gears I've been having and found a highly reccomeded local shop that will do the labor and a bonus I know the owner and he will cut me a deal on labor l. Thanks for all the help ctgreddy I'm dying to be able to drive my car again it's like I'm having withdrawals

 

tko 500 and 600s don't like to go in gear at high RPMS just an FYI, and T56 are massive expensive. You can build a pretty strong 3650 and be done.

 

How is 3-4K massive expensive for a magnum conversion?.. And I would never trust a 3650 for high torque, even if it's built..

 

Because you can get a built 3650 for 2-2500, and it direct bolt up. You can also get a built t45 for around that as well. ALOT of high torque cars run built 3650s without issue. 4k for a magnum setup in my opinion is expensive. 1. If its a street car that sees occosional track use a built 3650 will hold up just fine. 2. If its a designated track car, well, sticks are usually out the window if you wanna compete youll be running a built c4, powerglide, th400, th350. And you can get a bullet proof auto setup for even less that 4k for that magnum setup. I'm curious to what parts in the 3650 you are afraind of that your not afraid of in the t56.

 

Just not worth it in my opinion.. It's not a sturdy transmission at all. If it's just street that's different, but for heavy use and hard shifting I wouldn't use one.. Everyone has there opinion though, I just lean to the safe side for everything.. I agree that an auto is much cheaper and easier to hold power..

 

Whats not sturdy about it? Will take a t45 as an example. All the parts in the transmission that have a tendency to fail, shift forks, synchros. Are all interchangeable with t56 shift forks and synchros. Input shafts can be upgraded from 10 spline to 26 spline. And the gear makeup and materials are the same between the transmissions. Yes in stock form a t56 is better, but built you can get a t45 that con run consistent 9 second quarter mile pases for half the cost of a t56 "magnum spec" trans. Hell I have a STOCK t45, and it has an easy 200 passes on it down the quarter mile, more than half supercharger with over 400 horsepower. Not a dime of a problem. The trans we just finished for our friends 12:1 compression nitrous b head 4v was a t45 with t56 forks and blocks and don't expect that to let loose any time soon. Magnum spec t56 just aren't worth the money IMO. Can run a bullet proof t45 from t45 source FACEPLATED for less money.

 

Not arguing with you man.. To each their own.. I recommend a T56.. you recommend a 3650.. It's just preference.. I've used them, they're easy, they're smooth, just what I would go with over a built 45 or 3650

 

I understand but in this scenario, a roughly 300 horsepower street car, putting a transmission in that would cost half the price of what the cars worth is just a little out of hand. Not to mention an extra labor charges/parts to make it work if he has to take it to a shop just isn't even remotley worth it for the OPs case.

 

Definitely see your point there.. the T56 was someone else asking though, that had a 450RWHP car and plans to go further with it... As for OP I would just recommend an OEM swap...