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View Full Version : Is the tranny the same in the 4.0 and the 4.6?



charliebrisbane
20th August 2015, 12:49 PM
Not talking about the bloke behind the wheel here guys.

I think the auto trans is different from memory. Thinking about buying a 4.0 and getting my hands on a 4.6 to drop in. Obviously if the auto is different then it would be an extra cost.

Too hard basket?????????

Eevo
20th August 2015, 12:59 PM
4HP22 vs 4HP24 i think

Disco Muppet
20th August 2015, 01:05 PM
On a p38a it should swap straight over, assuming its of similar vintage.
Eevo is right, 4.0 has the 22 and the 4.6 has the 24

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p38arover
20th August 2015, 01:10 PM
Also a different torque converter if I recall correctly.

Disco Muppet
20th August 2015, 01:53 PM
Yep.

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Scouse
20th August 2015, 03:11 PM
I think the auto trans is different from memory. Thinking about buying a 4.0 and getting my hands on a 4.6 to drop in. Obviously if the auto is different then it would be an extra cost.

If you're just doing an engine swap, the existing transmission will bolt up to the 4.6.


As long as you're not drag racing or towing half of Australia behind it, the 22 will be OK.

charliebrisbane
20th August 2015, 07:22 PM
And is it possible to just swap in 4.6 to a 4.0 car if an engine swap is needed particularly 99-01 models?

finallyrangie
20th August 2015, 07:28 PM
4hp24 is the stronger of the two, the 4hp22 will hold the 4.6 in normal driving but if you are looking for power upgrades or a tow vehicle the 4hp24 is stronger, the earlier models have a bigger torque converter (much bigger actually )

Might be worth getting a gearbox to go with the engine

charliebrisbane
20th August 2015, 08:04 PM
Thanks guys. thought they were different.

Pedro_The_Swift
21st August 2015, 06:56 AM
isnt the 24 longer?

Scouse
21st August 2015, 08:23 AM
isnt the 24 longer?Slightly but I've been told it doesn't make a difference when swapping between them.

Pedro_The_Swift
21st August 2015, 12:14 PM
15mm longer