View Full Version : Who knows their FE blocks and their manual trannys???

06-15-2005, 04:18 PM
I may have an opportunity to purchase a 390 from a 66 Tbird, which had 9.5:1 compression that year and advertised 315 HP and 427 ft lbs of torque.

Anywho, I feel like this ma be a good upgrade to the old 73 F100 240 inline six that is in there now.

The problem is, I have a 3 speed on the tree, and want to keep it. I can't find much info on what model of tranny is used with the 73F100 240 inline engine, as opposed to the FE blocks.

I am curious if the flywheel may be the same, and if all I might have to change is the bellhousing?

Anyone know about these FEs and their old trannies?

06-15-2005, 11:01 PM
I am fairly shure you will need a different flywheel. I KNOW you will need a different bellhousing. There should be loads of these available out there, you just gotta find 'em.

06-15-2005, 11:04 PM
you have PM

06-15-2005, 11:16 PM
You'll have to change the flywheel, bellhousing, tranni, motor mounts, radiator, all the accessories, and stab it in at least 5 times to locate the new mountings. Probably have to re-do the driveshaft(s), too. 4WD, or not? If so, then you got 2 driveshafts to consider. It's gonna be a job, experience speaking, but that years a good one and worth the effort...

06-15-2005, 11:22 PM
Thanks, I was just told that my current tranny has a different length in the 6 and 8 cylinder versions. Another guy just told me they were the same???

If I could keep my 3 speed and do it I would go ahead with it, then maybe later swap to a C6...

It doesn't look good right now....