390/ T-5 Combo?
Thread Starter
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Senior User
Joined: Jul 2009
Posts: 141
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From: Bangor, WA
390/ T-5 Combo?
Will this work? I don't know a whole bunch about engines as of yet, but
I've heard of people mounting small block trannys to big blocks before. I've
also heard that if your not careful with it you'll burn the clutch/tranny out
in no time at all. I really, really, REALLY want a five/six speed but don't
want to spend the 3 grand for a T56. I did some hunting and saw that
Speedway motors has a Big block FE to T5 Steel Bellhousing (I've included
the link below).
Ford FE 352-390-427-428 Steel Bellhousing - T5 & TKO
Will this work if I leave the T5 stock or will I have to rebuild it with HiPerf
parts? It will be going behind a rebuilt performance 390 in a '73 F100 with
a 9" posi rear end. I will be abusing it because I haven't driven a
standard in a few years, I'm 20 and therefore, I like to go fast.
Yut, Yut, Oorah, Semper Fi, Devil Dawg.
I've heard of people mounting small block trannys to big blocks before. I've
also heard that if your not careful with it you'll burn the clutch/tranny out
in no time at all. I really, really, REALLY want a five/six speed but don't
want to spend the 3 grand for a T56. I did some hunting and saw that
Speedway motors has a Big block FE to T5 Steel Bellhousing (I've included
the link below).
Ford FE 352-390-427-428 Steel Bellhousing - T5 & TKO
Will this work if I leave the T5 stock or will I have to rebuild it with HiPerf
parts? It will be going behind a rebuilt performance 390 in a '73 F100 with
a 9" posi rear end. I will be abusing it because I haven't driven a
standard in a few years, I'm 20 and therefore, I like to go fast.
Yut, Yut, Oorah, Semper Fi, Devil Dawg.
Needsmorecoffee.
Joined: Oct 2004
Posts: 3,624
Likes: 2
From: CT
The main drawback with the stock T5's are the torque ratings. 85-89 was 265 ft lbs. 90-93 was 300 ft lbs. Z spec in the Cobra T5's were a bit better at 330 ft lbs and up to 450 hp. FE's have torque ratings from 352 ft lbs in the 352 to 401-427+ ft lbs in the 390's stock. The torque of the FE will shred the stock T5 in short time. You can get a World Class T5 or Tremec 500-600 series. So yes you'd need a built up trans to handle your needs.
B2 Motorsports, LLC
Forte's Parts Connection (508) 875-0016 - TREMEC DEALER, FACTORY FIVE COBRA PARTS, FORD RACING PARTS, FFR MKI and MKII, MUSTANG PARTS, TRANSMISSIONS, T-56, T-5, TKO, TR-3550
Brent @B2 or Mike at Fortes can hook you up with everything at a decent price.
B2 Motorsports, LLC
Forte's Parts Connection (508) 875-0016 - TREMEC DEALER, FACTORY FIVE COBRA PARTS, FORD RACING PARTS, FFR MKI and MKII, MUSTANG PARTS, TRANSMISSIONS, T-56, T-5, TKO, TR-3550
Brent @B2 or Mike at Fortes can hook you up with everything at a decent price.
Thread Starter
|
Senior User
Joined: Jul 2009
Posts: 141
Likes: 0
From: Bangor, WA
The main drawback with the stock T5's are the torque ratings. 85-89 was 265 ft lbs. 90-93 was 300 ft lbs. Z spec in the Cobra T5's were a bit better at 330 ft lbs and up to 450 hp. FE's have torque ratings from 352 ft lbs in the 352 to 401-427+ ft lbs in the 390's stock. The torque of the FE will shred the stock T5 in short time. You can get a World Class T5 or Tremec 500-600 series. So yes you'd need a built up trans to handle your needs.
B2 Motorsports, LLC
Forte's Parts Connection (508) 875-0016 - TREMEC DEALER, FACTORY FIVE COBRA PARTS, FORD RACING PARTS, FFR MKI and MKII, MUSTANG PARTS, TRANSMISSIONS, T-56, T-5, TKO, TR-3550
Brent @B2 or Mike at Fortes can hook you up with everything at a decent price.
B2 Motorsports, LLC
Forte's Parts Connection (508) 875-0016 - TREMEC DEALER, FACTORY FIVE COBRA PARTS, FORD RACING PARTS, FFR MKI and MKII, MUSTANG PARTS, TRANSMISSIONS, T-56, T-5, TKO, TR-3550
Brent @B2 or Mike at Fortes can hook you up with everything at a decent price.
Posting Guru
Joined: Feb 2009
Posts: 2,002
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From: victoria
have you looked at the gearvendors overdrive ?? it bolts on the back of the 4 speedand give you the overdrive for 2 grand ..or less if you can find a used on ,they have a good reputation I am putting one behind my C6 in my ranchero this winter..you end up with overdrive and all stock driveline with no issues
Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
The T5 will live behind a healthy motor provided that the driver doesn't beat on the tranny. 3rd gear is the weakest and a heavier vehicle will of course be harder on transmissions. There are plenty of Mustangs out there ~3500lbs making 500hp that are still using the T5. There are also ones out there that grenade a T5 with not much more than factory HP. It all depends on the driver.
