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4t65e trans question by adm927
Started on: 07-18-2018 12:40 AM
Replies: 10 (210 views)
Last post by: TXGOOD on 07-22-2018 10:25 PM
adm927
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Report this Post07-18-2018 12:40 AM Click Here to See the Profile for adm927Click Here to Email adm927Send a Private Message to adm927Edit/Delete MessageReply w/QuoteDirect Link to This Post
Is there a 4t65e regular trans and hd trans? Or are they all hd? If not how do you know the difference? Which cars came with what?
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Dennis LaGrua
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Report this Post07-18-2018 09:52 AM Click Here to See the Profile for Dennis LaGruaClick Here to Email Dennis LaGruaSend a Private Message to Dennis LaGruaEdit/Delete MessageReply w/QuoteDirect Link to This Post
The 4T65eHD transmission has a stronger differential. You can tell the difference by the longer tail shaft housing that holds the heavy duty differential.

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adm927
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Report this Post07-18-2018 10:04 AM Click Here to See the Profile for adm927Click Here to Email adm927Send a Private Message to adm927Edit/Delete MessageReply w/QuoteDirect Link to This Post
What did they come in?
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TXGOOD
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Report this Post07-18-2018 10:27 AM Click Here to See the Profile for TXGOODClick Here to visit TXGOOD's HomePageSend a Private Message to TXGOODEdit/Delete MessageReply w/QuoteDirect Link to This Post
I don`t know about where you are but I found in my area it was a lot easier to find a non-hd transmission in a salvage yard than the HD.
I just used my differential off of the old tranny I had but if you don`t have access to one ZZP sells the differential and cover.
I think all of the supercharged cars came with them.

[This message has been edited by TXGOOD (edited 07-18-2018).]

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olejoedad
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Report this Post07-18-2018 10:31 AM Click Here to See the Profile for olejoedadClick Here to Email olejoedadSend a Private Message to olejoedadEdit/Delete MessageReply w/QuoteDirect Link to This Post
The HD was used with the supercharged engines.
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darbysan
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Report this Post07-18-2018 10:46 AM Click Here to See the Profile for darbysanClick Here to Email darbysanSend a Private Message to darbysanEdit/Delete MessageReply w/QuoteDirect Link to This Post
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adm927
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Report this Post07-18-2018 11:15 AM Click Here to See the Profile for adm927Click Here to Email adm927Send a Private Message to adm927Edit/Delete MessageReply w/QuoteDirect Link to This Post
Thanks for the info so my 98 Riveira has one in it.
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CJB118
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Report this Post07-18-2018 11:59 AM Click Here to See the Profile for CJB118Send a Private Message to CJB118Edit/Delete MessageReply w/QuoteDirect Link to This Post
A vehicle that originally had the HD version will show code MN7 on the RPO label.
.
More info
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vette7584
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Report this Post07-18-2018 05:12 PM Click Here to See the Profile for vette7584Click Here to Email vette7584Send a Private Message to vette7584Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by TXGOOD:

I don`t know about where you are but I found in my area it was a lot easier to find a non-hd transmission in a salvage yard than the HD.
I just used my differential off of the old tranny I had but if you don`t have access to one ZZP sells the differential and cover.
I think all of the supercharged cars came with them.

is there any other differences between the two outside of the differentials? is the gearing different? will a non hd tranny hold up with a differential swap? non hd's are very easy to find around me as well, some with very low miles, i have 2 hd tranny's that slip or wont go forward, if it is as easy as a diff swap, i may pick up a few

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RCR
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Report this Post07-22-2018 08:40 PM Click Here to See the Profile for RCRClick Here to Email RCRSend a Private Message to RCREdit/Delete MessageReply w/QuoteDirect Link to This Post
Someone correct me since it's been a while, but doesn't the HD have a 4-bolt bracket on the backside of the trans. Non-HD is 3-bolt...

Bob
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TXGOOD
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Report this Post07-22-2018 10:25 PM Click Here to See the Profile for TXGOODClick Here to visit TXGOOD's HomePageSend a Private Message to TXGOODEdit/Delete MessageReply w/QuoteDirect Link to This Post
I`m pretty sure you have to use the HD differential cover with the HD diffential and I think that side axle as well.
I`m not sure about the gearing.
The tranny I got to replace mine had a little lower gearing so it had a little better out of the hole acceleration.
From what I understand between the differential and the sprockets for the drive chains there are a number of different
gearing ratios.
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