[Mach1Foreman]

i know another t3650-t56 question. i currently have the 3650 with a center force dual friction clutch, firewall adjuster, and quadrant. its impossible to go into 2nd 3rd and 4th over 4000 rpms and every now and then i cant even get it into 1st. if i got with the t56 i would need the cross member, bell housing and drive shaft to make it fit, whats the price deference between the two just parts to install it? would i be better off just rebuilding the 3650? im so out of it with this tranny problem and help would be great

[Mach Boy]

What kind of power are you making and what gears do you have in the back?

[sikedsyko]

Ok, I'm in the same boat you are. Although I'm bonestock and I don't know what mods you have. That said, I REALLY looked into the t-56 swap, and it just honestly started getting into big dollars to swap one in. To buy one new was gonna run me over $4000. If you look hard (try looking on svtperformance.com) you can find used ones out of Cobras for $1200-2000+the others odds and ends you'll need.

While the stock Termi t56 is uses a 10spline input, most aftermarket ones use a 26 spline. So you'll need a new clutch if you want to go aftermarket.

Anyways. I ended up just deciding to have my 3650 rebuilt which shouldn't run me over $1500 included having a new clutch installed.

[Mach1Foreman]

Im making 320hp and I currently have stock 3.55 but am going with 4.10s (your idea) once I have the tranny rebuild or replaced

[Mach1Foreman]

I've also went through 4 tb and 1 clutch. I have the bad center force clutch that has weights. The new cf clutch has no weights I never had a grabbing problem. What's the best tb and clutch out there that won't screw up? I'm also gona cyro the inputshaft

[Mach Boy]

Consider this. If you're planning on making more than 350rwhp with your car at some point with 4.10s (and your Mach is your primary car), then 1st gear will almost become useless with the 3650. The T56 has a long 1st gear and I love that it is actually useful in my car. That and 5th gear is great in those 40-55mph zones. And do the 26 spline upgrade if possible.

If your Mach is a race car or money is an issue then I'd just replace it with another 5 speed.

[ReverendDexter]

Going to a lower gear in the diff is gonna make life easier on your tranny, assuming you drive in about the same way you did before.

[Mach1Foreman]

I have a fiero as a daily
I use the mach on the weekends, cruses, track. but will be using it for 2 weeks when I'm done building the 350 for the fiero.
What diff ratio is good for the 3650 and the HP I'm making, plus Im getting Dr soon....
What's the best clutch and tb I should get?
Should I go aluminium flywheel and driveshaft?
Sorry for so many questions. The car has almost 100k if that helps, now it just sits and hoping to make it my pleasure car only

[WickedSnake00]

T56 swaps are expensive. Just picked a complete one up for $2100, thats with the 26 spline upgrade, crossmember, harness, driveshaft, shifter, aluminum flywheel, and Spec stage 3 clutch. Not cheap.

You can get much cheaper out there. I think I saw a few people offering up theirs for around $1500. Of course right after I buy mine.

If you're not making big power you don't need it. Your power also determines what other mods are prudent.

And keep in mind the different ratio sets of the T3650, the one you have now is specific for the Mach 1's 3.55:1 gears, and that there's a slew of different T56 ratios out there. Make sure to crunch some numbers before you do anything too drastic.

[ReverendDexter]

Originally Posted by Mach1Foreman I have a fiero as a daily

Rockin'. I like Fieros... at least after they got the suspension they were supposed to have. It's a right shame GM killed that car.

Originally Posted by Mach1Foreman I use the mach on the weekends, cruses, track. but will be using it for 2 weeks when I'm done building the 350 for the fiero.

A'ight.

Originally Posted by Mach1Foreman What diff ratio is good for the 3650 and the HP I'm making, plus Im getting Dr soon....

Well, that's not an easy question to answer. You can calculate your ideal gear ratio for 1/4 mile; that's the gear ratio that will have you going through the traps at redline. You can do the same for a specific road course, as it's the gear that will have you at the top of the fastest straightaway at redline (each track will have a slightly different optimal gear) For anything else, it's personal preference. I'd recommend 4.10s for that 4v though, 4.30s if all you're doing is drag racing.

Originally Posted by Mach1Foreman What's the best clutch and tb I should get?

The best clutch is the one that's rated LEAST but still in excess of how much torque you make at the crank. Overspec'ing a clutch is one of the worst things you can do... the clutch SHOULD be the first thing that goes, it's like a fuse for your drivetrain. Beyond that I recommend staying with a spung-hub setup. For brands, ask 3 different guys and you'll get four different answers.

I'm assuming you meant TOB, not TB (throw-out bearing, not throttle body), in which case I'd stick with the Ford Racing one.

Originally Posted by Mach1Foreman Should I go aluminium flywheel and driveshaft?

Driveshaft, sure. Flywheel, it depends. A lighter flywheel is one of the best mods you can make for a racecar, but this is still street-driven. The trade-off is quicker revving but it becomes easier to stall out; without that flywheel mass, it'll feel like you've lost torque down around idle - you haven't, you've just lost that inertia that made it feel like it had more torque than you actually do down there.

Originally Posted by Mach1Foreman Sorry for so many questions. The car has almost 100k if that helps, now it just sits and hoping to make it my pleasure car only

Well, drive it! A beat-to-crap car that's on the road is 10,000x better than that flawless one that just sits in a garage being rubbed by a diaper.

[Mach1Foreman]

How much power is needed to have a t56 swap or will it be fine in a mildly modded mach?

[WickedSnake00]

Originally Posted by Mach1Foreman How much power is needed to have a t56 swap or will it be fine in a mildly modded mach?

Well let's put it this way, my SAE brothers over at Ford decided to put the T56 in the 390hp (actually closer to 420hp, ratings were sandbagged) 03/04 Cobra, and kept the T3650 in the 03/04 Mach 1, which was closer to 320hp. Unless you've got a power adder, you probably don't need it. Even if you were close to that threshold, it would be a hell of a lot cheaper and easier to upgrade your existing transmission.

If I'm not mistaken stal94gt is putting down around 630rwhp in his KB'd Cobra with a 26 spline T56. Unless you're up there, I'd advise saving the cash, possibly putting it towards a trans upgrade or more go fast parts.

[Mach1Foreman]

Now that my car sits i am going to eventually build the engine, cams, forge internals, nos etc. I may as well have a t56 in it. Is it going to be sluggish, am I making that low of HP that its useless? Plus I heard the 3650 will always have a shifting problem due to the shaft not lining up...true?

[ReverendDexter]

Why would the T56 make it sluggish?

[wildcardfox]

I love my t56.... I don't even need 6th- correction: I can't go into 6th unless I'm going 95 mph. It's an awesome trans.

[Mach1Foreman]

Ummm....
Is the t56 to big of a trans to be in a 300 HP car?

[Mach1Foreman]

Plus I hate my 5th gear

[WickedSnake00]

Originally Posted by Mach1Foreman Ummm.... Is the t56 to big of a trans to be in a 300 HP car?

Strength-wise it's more than you need, but the effect on slowing you down is marginal.

It's not so much a matter of slowing you down as a cost factor. If you're not making big power you don't need the strength, and the money can be spent elsewhere.

[Tommy Z]

Originally Posted by WickedSnake00 Strength-wise it's more than you need, but the effect on slowing you down is marginal. It's not so much a matter of slowing you down as a cost factor. If you're not making big power you don't need the strength, and the money can be spent elsewhere.

This is the only thing that's kept me from pulling the trigger on a T56. I can afford it, but I'm also trying this new called 'saving money'- parents say I'm pretty garbage at it.

[stangs4life]

id buy a used t56 if I were you. They are way stronger and better built transmissions