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I have finally installed a 42RH in place of my 727 and all seems well when driven in traffic at moderate throttle. Driving at about 50MPH I tried kickdown. It seemed to shift down but the engine revved very high without the anticipated surge forward - so much so that I was worried about the...

Just checking figures for 46RH overdrive. 2400 RPM steady level driving. Switch in overdrive - 1850 RPM. This comes out at about 0.77:1 but the overdrive ratio is given as 0.69:1. Switch in lockup and RPM drops to 1650. 2400 to 1650 is a ratio of 0.68:1. Does the stated ratio include the...

Upgrade from 727 to 42RH is nearly there. I have found out that the stall of the converter currently fitted to my 42RH is 2300. The car is geared for 130MPH at 5000 RPM, so 26MPH per 1000, 2000RPM at 52MPH. If overdrive comes in at 55MPH and lockup around 65MPH, then driving on main roads at...

I have finally found time to swap out my 727 trans behind a Poly 318 for a 42RH. I had hoped I could still use the original starter motor but it's way out. Please can someone suggest what will fit? As I'm buying new I would prefer to go for a mini starter if possible.

Please can someone help me identify which vehicle(s) the blue rubber mount on my 42RH comes from? It arrived on a second hand transmission that I have swapped with a 727 and it would be useful to know where to look if I need to replace it in the future.

I have read a few articles that suggest the overdrive on a 42RH can be rebuilt to be as strong as that on a 46RH. The larger part of this seems down to fitting more clutches and steels. It seems there are different thicknesses of these but also at least 3 different designs of direct clutch...

I have just bought Sonnax Manual Valve 22771-09 and pressure regulator valve 22771A-02K so that my A500 will fill in park. Anyone know what is involved in fitting these? Can it readily be done with the transmission in the car or do I need to wait for when I get it overhauled?

Does anyone know if there is an off the shelf Mopar speedometer cable extension for use when swapping out 727 for A500 or A518? I did see one with a speed sensor incorporated but they seem to have been discontinued.

Changing 904/727 to A500/A518 I'm investigating the subtleties of controlling overdrive and lockup when gently accelerating on the freeway. Both the PATC kit and the delay relays option drop overdrive and lockup together when the throttle is opened. I'm wondering if the TC lockup and OD are...

I'm replacing a Torqueflite 727 behind a 318 Poly with a 42RH. As far as I can see the earlier transmission uses 5/16" lines and the later 3/8". I'm not sure about transmission cooler capacity to dissipate heat but would be grateful if anyone has any info. I'm a bit puzzled by the seeming...

I could use some advice on what my best options are for upgrading a 42RH transmission. It's going to go behind a 318 Poly with Edelbrock four barrel producing about 250HP. I'm looking for smooth changes and reliability rather than raw power handling for burn-outs. There seem to be several...

I'm looking for a 42RH transmission - 3 wire, overdrive with locking converter- to upgrade a 727 on a 318 Poly. Would need to be shipped to the UK. Thank you for any help.