Considering an Auto trans swap. Opinions?
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St. Jude Donor '06
Considering an Auto trans swap. Opinions?
Hey all, While browsing through my summit catalog yesterday I noticed that TCI Offers a 700R4 trans for somewhat short change. I love my 6 spd but would really rather have an auto, For one the wife wants to drive the car once in awhile and the fact that I can only drive for so long before the clutching starts to affect my back (herniated disc)
My first question is how big of a project am I looking at here? The 77 was originally an auto car which was changed to a ZF6 and LT1. Obviously I would need to relocate the crossmember again , but would I also need to get a new driveshaft? Now alot of this would be farmed out as I do not have access to a lift and I am not yanking the entire motor and trans just to do the swap.
Also what is my ZF6 and clutch assembly etc worth on the market right now? It's in great shape (except for the bubba'd shifter) leaks no fluids and shifts fine. The price I can get for the used trans and clutch assembly will dictate my desire to get into this deeper.
Thanks for any opinions folks!!
My first question is how big of a project am I looking at here? The 77 was originally an auto car which was changed to a ZF6 and LT1. Obviously I would need to relocate the crossmember again , but would I also need to get a new driveshaft? Now alot of this would be farmed out as I do not have access to a lift and I am not yanking the entire motor and trans just to do the swap.
Also what is my ZF6 and clutch assembly etc worth on the market right now? It's in great shape (except for the bubba'd shifter) leaks no fluids and shifts fine. The price I can get for the used trans and clutch assembly will dictate my desire to get into this deeper.
Thanks for any opinions folks!!
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Re: Considering an Auto trans swap. Opinions? (Madmikeee)
I am also considering an auto trans swap. Have a PG in my 66 and considering the 700R4. Everything is very positive. Check out their website. http://www.700R4.com . Bill
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Re: Considering an Auto trans swap. Opinions? (Madmikeee)
If you have the LT1 computer you should be able to run a newer trans (4L60E or something like that) which is basically the elec version of the 700r4 but a little beefier.
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St. Jude Donor '06
Re: Considering an Auto trans swap. Opinions? (Fevre)
If you have the LT1 computer you should be able to run a newer trans (4L60E or something like that) which is basically the elec version of the 700r4 but a little beefier.
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Re: Considering an Auto trans swap. Opinions? (toadster)
I am also considering an auto trans swap. Have a PG in my 66 and considering the 700R4. Everything is very positive. Check out their website. http://www.700R4.com . Bill
Thanks for the link!!
That's a better deal than TCI's!! and it does look pretty straight forward except for the computer and TPS
#8
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Re: Considering an Auto trans swap. Opinions? (Fevre)
I've heard that you can use a stand-alone computer for a 4L60E conversion from a diesel pickup. I would look at street and performance catalog too. But the later 700R4/4L60 are pretty strong and would not require as much wiring.
#9
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Re: Considering an Auto trans swap. Opinions? (Madmikeee)
I would consider the 200-4R, also. It fits right where a TH400 would go.
I think you need the TH350 driveshaft - but no cutting to size like the 700-R4.
Here is someone in Ebay that thinks the ZF-6 package is worth $1999,
another at $2200 - but you can get the whole 89 vette for $2500. :
http://search.ebay.com/zf-6_W0QQsoke...QQsatitleZzf-6
I think you need the TH350 driveshaft - but no cutting to size like the 700-R4.
Here is someone in Ebay that thinks the ZF-6 package is worth $1999,
another at $2200 - but you can get the whole 89 vette for $2500. :
http://search.ebay.com/zf-6_W0QQsoke...QQsatitleZzf-6
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Re: Considering an Auto trans swap. Opinions? (NHvette)
I would consider the 200-4R, also. It fits right where a TH400 would go.
I think you need the TH350 driveshaft - but no cutting to size like the 700-R4.
Here is someone in Ebay that thinks the ZF-6 package is worth $1999,
another at $2200 - but you can get the whole 89 vette for $2500. :
http://search.ebay.com/zf-6_W0QQsoke...QQsatitleZzf-6
I think you need the TH350 driveshaft - but no cutting to size like the 700-R4.
Here is someone in Ebay that thinks the ZF-6 package is worth $1999,
another at $2200 - but you can get the whole 89 vette for $2500. :
http://search.ebay.com/zf-6_W0QQsoke...QQsatitleZzf-6
And hell those are some grat prices for the ZF6!! Too bad even I think they are unrealistic LOL I was thinking maybe around 1300 for the whole setup would be a fair price.
The thing is how much it would cost to have the work done, unless someone wants to make some money, beer and food off me and help me do the conversion LOL
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Re: Considering an Auto trans swap. Opinions? (Madmikeee)
Well if you could just get an EZ TV Cable from Bowtie and skip the computer. Thats what most people have and it works very well.
Also do some research on the trans crossmembers. Simply redrilling a TH400 is possible, but some people have had problems. They tend to position the tail a little higher which changes driveline geometry and can cause your fan to bottom out in the shroud. I have a BTO crossmember which is really sweet because it allows for more exhaust clearance & height.
As for BTO tranny's, most people had good luck but a few (including me) have experienced problems. Just shop around...
Also do some research on the trans crossmembers. Simply redrilling a TH400 is possible, but some people have had problems. They tend to position the tail a little higher which changes driveline geometry and can cause your fan to bottom out in the shroud. I have a BTO crossmember which is really sweet because it allows for more exhaust clearance & height.
As for BTO tranny's, most people had good luck but a few (including me) have experienced problems. Just shop around...