Pulling trans from DF/S 91 Olds Delta 88 Help
 

Its almost ready to come out. I just need to loosen it from frame mounts but it looks like the frame running front to back drivers side is going to prevent the trans from being lowered out the bottom. It runs right along the edge of the pan. Is there a trick to getting the clearance to lower it out the bottom or do I need to bring the entire motor and trans out the top.

John Riley Jr
301 DF/S

Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

Support the engine from the top, there are hangers available to do that. Remove the entire cradle. Remove the transmission.

Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

I used to use those hangers with the Caddy but eventually found they weren't really needed. Support the engine with a jack, (not really needed) make sure you have pulled the axes and the trans will slide out. We used to change converters in 45 min. Jim

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Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

Some of those cradles would split from corner to opposite corner..Not sure on that one.
You can use a hoist to support the engine too.
In any case, while it's apart, I'd make sure you have the clearance for the next time.

Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

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Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

Hydramatic Motorsports supplied the original transmission for that car way back in the 90's. The gear sets from a THM 125 do not interchange with a 4T60. There were some high ratio sprockets made for the 4T60, these were made by Hydramatic Motorsports, and later were production, available for the Volvo version of the 4T60.

Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

Unless the frame has been modified it unbolts at the Rt. frt. You remove the bolts at the rt. frt. and the frame mount at the LF and LR and that half comes out. You have to break the ball joints to remove the axles easily. You can leave the L ball joint attached and swing the frame out, flat rate time saver. I use a support that goes from fender to fender and holds the motor up. You can make a support and use a long J bolt so you can hook the motor and raise or lower it, helps aligning everything.

Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

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Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

A 4T40 might work well, I believe there is a case that will bolt up. Adapters are not legal in stock, unless approved by NHRA. Joel on Joy did the trans for Bill Owens Grand Am, so he has some knowledge of the 4T40. If you still have the original trans in the Olds, it actually has a higher numerical ratio trans, than what the 4T40 has, and uses a similar converter. I don't see much upside in changing the car to install a 4T40.

Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

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Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

Unless you have something trick, the 4T60, and the 125 have a 3.33 diff ratio, and the 4T40 has a 3.27 ratio. The best sprockets were 32 drive and 38 driven for all three units. What ratio do you think you have for the 125?

Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

I will PM you.

Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

My friend, I told you months ago I would help you with this project.
I also asked you to not put it out there "live", and I told you why.

Russ, He's all yours now, buddy..

Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

This problem of gear ratio is why there are not more front wheel drive cars running out there. There just is not enough gear ratio in these transmissions, so as a Band-Aid they try and make up for it with short tires. So now you have a problem with consistent traction !

Re: Pulling trans from DF/S 91 Olds Delta 88 Help
 

your mailbox is full !