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Poor man's lenco? (TH400 with clutch)

65K views 187 replies 90 participants last post by  Shovelhead78  
#1 ·
#3 ·
interesting! I kno they used to use something similar to this on the circle track's, but didn't think it would hold up in a drag application.
 
#6 ·
Dude has been trying to sell that for 6 months. Was on the classifieds and on racingjunk. I can't wrap my head around it especially for what he's asking
Chris
 
#8 ·
Dude has been trying to sell that for 6 months. Was on the classifieds and on racingjunk. I can't wrap my head around it especially for what he's asking
Chris
 
#11 ·
Youngins........

It was very common. More so with a 727 than a Turbo 400.

The Clutchflite was an automatic transmission developed by B&M in the 60s specifically for drag racing, usually in a Mopar with a Hemi. In the case of the Mopar version, it was a 727 Torqueflite that had the bellhousing sawed off. In place of a torque converter, the Clutchflite utilized a heavy flywheel and a clutch setup. There was a spider assembly to drive the transmission pump. The idea was that you could leave as hard as a stick car, while having the consistency and speed of an automatic. It was used in the 60s because torque converter technology was still pretty primitive, and it was thought that the Clutchflite would be a good compromise of hard launches, quick shifts (that most drivers couldn't make), and not have the lack of efficiency of a torque converter (Drive-Through) at the top end.
The Clutchflite proved to be both unreliable and a safety issue.
The first NHRA Pro Stock car to try a Clutchflite was the Motown Missile.
 
#21 ·
My uncle ran a Vitar clutch turbo behind a 434 sbc for years in his monza, never had a bit of trouble out of it. It's still in the car today and the present owner has not had any issues out of it either. My uncle had it rebuilt 3 times in 15 years of running it, and the guy that has it now has rebuilt it once in the 10 years he's had it.
 
#34 ·
Yep..seen one once..behind a blown alcohol BBC in a altered when I worked for a transmission shop. Pretty cool.
 
#35 ·
I know a man down in these parts that used one on the street for many yrs but that was 30 yrs ago...cracked many a ass w/it and a nasty smallblock....
Had a bad fast prostock car also,raced it in the TEXAS PROSTOCK ASSOC. before the inception of promod
 
#43 ·
Man I wish I still had those pictures of every clutch or clutch flight that blew up and "U'ed" the dash to the rear view mirror.Nothing left of the trans tunnel,just shrapnel and a huge hole.
 
#45 · (Edited)
Late 60s and most of the 70s that was the shit!! But when it broke that shit flew everywhere!! I was covered in tranny fluid more than once in the drivers seat!! LOL
 
#46 ·
Bob Axtell from Warsaw, NY used one for many years in his corvette. Mike Duffy from Ossian, NY ran one in his austin for awhile. They work, but they're heavy.
 
#48 ·
What railbird and Gary Anderson said.

Very old technology...I had a friend that ran on he hind his 351C in the early 80's and that was an old swap meet find back then. I think it was a Winter's but could have been a Fairbanks.