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The "Car" C-6's had 3-pinion, aluminum housing planetaries, and were not capable of that kind of abuse for long. The TRUCK C-6,s (I had this on my 1966 428 CJ powered Galaxie 500 XL) had 4-pinion, steel housings, and COULD take the abuse.
There is a company in Canada called "Lentec" that produced a modified Ford AOD transmission by marrying it with parts from the Ford 4R70W unit, some years ago. This resulted in a transmission capable of taking 55% more horsepower and torque than the TH400. I saw one in a 6-7 second Chevy using an adapter plate. This car had 1100ish horsepower! It had been eating 400's until the switch to the "Ravineaux" designed Ford unit.
What's so great about sliced bread?That's certainly what they claim, and 99% of the time they're referring to the transmissions in the late 2000 model trucks. I used to parrot the same thing until I got one. Changed my mind rather quickly.
Even the "Allisons" in the GM diesels aren't as good as they once were. Yet folks still claim they're the best thing since sliced bread.
Even the HEB bread not as good as it used to be.What's so great about sliced bread?
They also had stronger ribbed cases to.The Lincolns supposedly had the heavy duty ribbed case C-6's if they had a 460.
lentechautomatics.com
And bring back HeeHaw!
It's still on TV out here,i forget what channel it's on,but i have seen it recently,like with-in the last week or so,lolHee Haw : Free Download, Borrow, and Streaming : Internet Archive
Best Of Hee Haw Regulars Vol.1archive.org
I suggest the MPEG4 download option unless you have a preference for another.
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I replaced and built a TH400 for a friend's '68 Camaro which he had removed the 396 and put in a 454 LS 6 with aluminum heads. He found out the hard way why one retains the rubber trans mount even though they have put solid steel mounts on the engine.... it split the case!They also had stronger ribbed cases to.The Lincolns supposedly had the heavy duty ribbed case C-6's if they had a 460.
Lentech is still around,but Len has retired as far as i know and Chris owns the company now.Their Strip AOD is rated to 1500 hp,but they don't reconmend using it in a street car that see's more street then strip action. My brother ran one of Lens street AODs years ago in his blown 5.0,and he couldn't blow it up.
The Turbo 400 of today is not the same Turbo 400 of days of old .The majority of T-400's in use in drag applications are utilizing the Reid case and are capable of holding well in excess of 2000 rwhp
Products - Lentech
Transmissions Pricing Transmission Controllers Pricing Valve Bodies Pricing Converters View Converter build sheet Pricing Testing Information about our For information about one of our products please contact us
Our fellow members likely don't know what "HEB" is!
Those big ribs were only on the 385 series big block cases, and the "M" series 335 400 cubic inch engines. The 2 uppermost bolts were higher up and 8 inches apart. The case for all other applications had much closer together upper bolts at about 4 inches, The ribs were smaller too.They also had stronger ribbed cases to.The Lincolns supposedly had the heavy duty ribbed case C-6's if they had a 460.
Lentech is still around,but Len has retired as far as i know and Chris owns the company now.Their Strip AOD is rated to 1500 hp,but they don't reconmend using it in a street car that see's more street then strip action. My brother ran one of Lens street AODs years ago in his blown 5.0,and he couldn't blow it up.
The Turbo 400 of today is not the same Turbo 400 of days of old .The majority of T-400's in use in drag applications are utilizing the Reid case and are capable of holding well in excess of 2000 rwhp
Products - Lentech
Transmissions Pricing Transmission Controllers Pricing Valve Bodies Pricing Converters View Converter build sheet Pricing Testing Information about our For information about one of our products please contact us
They were also behind some of the FE C-6's to.My Dads old 75 F150 was an oddball truck,that after he dug into with the ford rep from down east was supposedly a truck built for a magazine test.How it ended up on a dealers lot in western Canada,the rep couldn't explain it.The truck had the heavy duty 391 block/Holley 4 barrel and a dual point distributor.We found out about the block when Dad had to replace the timing chain,as the run of the mill 390 timing chain was differant and didn't fit the engine in the truck, he had to buy the timing chain for the heavy duty 391 used in the 3 ton and heavier trucks,it also had the heavy duty ribbed transmission case,and it had the ultra rare nodular iron center section in the rear diff.
The 2 inch embossed "N" in the differential case was the dead giveaway that there was more nickel in the cast iron, thus, it was severe duty. My Galaxie 500 had the 3:70 posi unit with 31 spline axles and the "N" on the housing. I sadly and short sightedly traded the car in on an Escort when gas prices nearly doubled in 1982. There was a HEMI Fury sitting on the parking lot at that dealer, that a guy had traded in for the same reason. I'll bet he kicked himself many times for getting rid of THAT car.
It had the big "N" cast into the center section,when Dad was parting out the truck,i stole the center section,and it went in my hot little 77 regular cab shortbox,lol.
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