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ZF 8HP-70 eight speed auto transmissions

S

SoloWookiee

New member
Joined
Oct 16, 2025
Has anyone tried fitting an 8HP in a 245? TurboLamik has a phenomenal TCU that gives you insane control. Just wondering if anyone has tried this for their brick.
 
SoloWookiee said:
Has anyone tried fitting an 8HP in a 245? TurboLamik has a phenomenal TCU that gives you insane control. Just wondering if anyone has tried this for their brick.
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Brick? Yes. 240, don't know. Randy Pobst's Flying Moose 740/760 Turbo race car is running an 8HP transmission now.
 
8 Speed Why,
the engine will spend more time shifting to do what?
I'll put it against my Power Glide any day.
 
283SD said:
8 Speed Why,
the engine will spend more time shifting to do what?
I'll put it against my Power Glide any day.
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Google “zf 8hp turbolamic tcu” watch the videos, it’ll make sense. Incredible power and torque handling ability with the capability to have a fully automatic, simulated clutch manual, sequential, and paddle shifting transmission with launch control. It turns a race car into a street car simply by changing configuration on the fly. And they’re cheap, well the trans is, the tcu costs a decent penny.
 
SoloWookiee said:
Has anyone tried fitting an 8HP in a 245? TurboLamik has a phenomenal TCU that gives you insane control. Just wondering if anyone has tried this for their brick.
Click to expand...
I have a 8hp70 in my 245 and am installing one in my drag car as well. Maxxecu is by far the most cost effective way to go about controlling the engine and transmission. On my diesel wagon I have a 8hp mini and and in my drag car I have a Maxxecu race.
 
cosbySweater said:
I have a 8hp70 in my 245 and am installing one in my drag car as well. Maxxecu is by far the most cost effective way to go about controlling the engine and transmission. On my diesel wagon I have a 8hp mini and and in my drag car I have a Maxxecu race.
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Sweet. You'll have to post some videos of it in operation sometime soon. This is what I would go to for any 2/7/9 transmission swap. The 10R80 is known for some issues, that said, I love the one in my Mustang GT. 10 gears that will shift at full throttle keeping the engine right in its peak power range is something to experience. All the die hard manual transmission fans I race with are starting to get it. They can't compete with the DCT/automatic transmissions manufacturers are coming up with these days.
 
2manyturbos said:
Because it keeps the engine right in the maximum power curve. Sorry, 2 gears ain't gonna cut it. Even if it does in your imagination, reality takes over in the real world.
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I like the 9 speed in my FWD Cadillac. It really likes snapping thru the gears in part throttle/high boost.
 
Yeah this topic isn’t new…there are a handful of cars on here with an 8HP

Bloody244

Thread '8hp70 in a 240?'

so my aw71 will die when i install the twin sequential turbo 19t setup.
so i found an adapter that goes from a redblock to the 8hp70 n57.
but i dont know what i have to do to get the driveshaft to bolt on.

if the 8hp70 is shorter than the aw71 can i just get an adapter from the trans to driveshaft?

how long is the aw71?

the 8hp70 is 668mm long

whats a good tcu?

H

Thread 'Genuinely terrible idea: 8 speed transmission'

I have a 94 volvo 940. According to the Vin it has a b230fd and the M90 transmission. It may have been auto swapped, because it's definitely not manual.

YV1JS83

Is anyone aware of a small newer transmission that is a common swap in for this engine? I have moderate cad skills so I could have an adapter machined. My main concern is a wider gear ratio, lower rpm at higher gears, etc.

I just rented a jeep wrangler Rubicon for work and having 8 speeds was actually really nice.


HiSPL said:
Just curious. Is there a MaxxECU that will run the trans and the motor? Or is it a 2 ECU situation?
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MaxxECU includes native automatic (including DSG & 8HP) transmission support as part of all their ECUs, even the Mini.

The Mini, Street, and Sport models require some configuration of inputs and outputs. The Race, Gen2 Race, and Pro all are compatible without any extra steps.
 
283SD said:
Top Fuel Dragster still use them.
Like I said
You want to prove me wrong?
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It would be so easy to prove you wrong. Bring a small displacement, low torque, heavy car with a 2 speed transmission to any event whatsoever and watch what happens when it goes up against anything with 3 or more gears. It is a silly argument. Sure, 2,000-3,500 hp in a 2,000 pound car and it won't need more than 2 gears to run a quarter mile. That same transmission in a heavy vehicle trying to move major weight is a POS. I had a 1963 Chevrolet Carryall with a 300 hp 327 and Powerglide in it. It was terrible for towing. A 1.76:1 low gear doesn't work worth crap to get 10,000 lb moving on any sort of gradient. I'm betting you never drove a Toyota Corona with a 2 speed Toyoglide? What a terribly sluggish performing car.
 
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This has peaked my interest. What does a good used ZF8HP cost and where does one find the bell housing and cross member adapters for a B230?
 
283SD said:
Top Fuel Dragster still use them.
Like I said
You want to prove me wrong?
Click to expand...
I like drag racing but a top fuel dragster is about as much of a one trick pony as it gets.

8hp's are being used in a lot of different motorsports including drag racing. They should also be used in competitive lifting.
 
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