Originally posted by rockcrawl: That's not Joe's webpage, it's mine.
Rockcrawl...i thought it was yours...we spoke a while back. do you know who has done a engine swap with a th425 or TH325 mounting the engine so it faces towards the back? I know it exists somewhere but i have to find out how it was done. I don't think you can just turn the final dive 180 degrees...it ain't that easy....any help from you or anyone else would be greatly appreciated........thanks.
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04:35 PM
rockcrawl Member
Posts: 2528 From: Lehigh Valley, PA Registered: Jul 2000
I've never seen it done, only heard of it. When I was doing mine several years ago I had a few questions I needed answered. I got the name and # of the guy that was doing the swaps for D&R Replicars and gave him a call. I told him what I was doing and the first thing he asked me is which way I was doing it. He said it is better to do them backwards. He said all he does is rotate the final drive upside down. I didn't get any other details besides that, at least none that I remember. I would have reversed mine, but I was too far into the project to make changes. The contact info I have for the guy is no good anymore. Why don't you think the final drive can be rotated? I just remembered that Held makes a cradle for the 425, here's a quote from their site "This cradle is designed to fit the GM 425 longitudinal transaxle mated to the SB Chevrolet. In this installation the transaxle chain drive is ahead of the engine against the firewall and the engine accessories face the rear for easy access. Weight distribution is important and in this configuration all the weight is ahead of the rear axle. The TH425 is a bullet proof transaxle capable of dealing with plenty of torque. Parts to perform this conversion are available on request." They should be able to answer questions too.
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06:12 PM
qwikgta Member
Posts: 4671 From: Virginia Beach, VA Registered: Jan 2001
Are these TH425 and Th325-4l transmissions rare in any way? How much can one expect to pay for one. My twin turbo LS1 project has found new life (outside an fbody )
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10:37 AM
Will Member
Posts: 14290 From: Where you least expect me Registered: Jun 2000
Originally posted by TONY_C: OK, does anyone know whose car this is? I really want to talk with him about this swap. from my limited knowledge of Caddy 500 ci motors it appears that the front of the engine is facing the back of the car which means the final drive gearset has been reversed. any help locating this guy would be greatly appreciated...
[This message has been edited by TONY_C (edited 09-07-2001).]
No, the Caddy has a front distributor. That engine is mounted with the front forward.
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10:02 PM
Will Member
Posts: 14290 From: Where you least expect me Registered: Jun 2000
Originally posted by JayUSA77: well i found the solution for the 5 speed if i still can afford it. it will cost around 3500 for the transaxle and its for EFI i have a hyperlink if you want it. It can hold 800 hp and is a 5 speed. KInda expensive though. i dont know what to do. MONEY is now a issue due to that high price. J
More info please. How the heck does a trans care wether it's used with EFI or carb?
Forget about using a 3000GT transaxle. The VR4's have transmission reliability problems stock, and the FWD versions can't be any tougher.
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10:04 PM
Will Member
Posts: 14290 From: Where you least expect me Registered: Jun 2000
Originally posted by ray b: old 66 corvair 4 speed was a rockcrusher guts trans 66 only year that it was used but was easy to adpt to a V-8 but thats the only GM unit that would work ecpt autos like the early eldo unit but how much power will the stock 125 take?? maybe cheaper to just blow 125's every so offten.
I thought that all Corvair transaxles used Saginaw guts, not rock crusher parts.
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10:05 PM
Sep 10th, 2001
TONY_C Member
Posts: 2747 From: North Bellmore, NY 11710 Registered: May 2001
Originally posted by Turbo88: Are these TH425 and Th325-4l transmissions rare in any way? How much can one expect to pay for one. My twin turbo LS1 project has found new life (outside an fbody )
Turbo88, you are in luck...I bought my TH425 from a guy in Oklahoma, he shipped it to me, it was a pretty reasonable price. Contact Ken at East-West Auto Parts, he can hook u up with a tranny.
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