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 Write-Up: 4T80e Transmission Install

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dreww
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PostSubject: Write-Up: 4T80e Transmission Install   Wed Nov 04, 2009 9:38 pm

Im going to document my 4t80e transmission swap/install. I will post some pics up. Im doing this because the only other install like this has instructions that aren't very specific, or at least not documented as much.

So far, the 4t60 is out, so most pics will be from here on out. Pulling the trans is fairly straight forward. We had to drop the subframe completely though. Surprisingly, the 4t60 looks great, as do the axles.

Our first problem we ran into was that the stock flywheel is a 3 bolt pattern. The torque converter that came with the 4t80 is a 4 bolt pattern. From my research, it appears that the 4t65 has the same 3 bolt pattern. The Aurora flywheel wont bolt up to the Riv's crank...so we don't have a working flywheel. So we have to drill new holes into the stock flywheel. We are probably going to have a machine shop or a friends drill the new holes since they have to be perfect. The same flywheel should save us from getting another starter too.

BTW, this 4t80 is an beast.
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dreww
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Wed Nov 04, 2009 10:19 pm

(click images to enlarge)





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T Riley
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Wed Nov 04, 2009 10:26 pm

dreww wrote:
Im going to document my 4t80e transmission swap/install. I will post some pics up. Im doing this because the only other install like this has instructions that aren't very specific, or at least not documented as much.

So far, the 4t60 is out, so most pics will be from here on out. Pulling the trans is fairly straight forward. We had to drop the subframe completely though. Surprisingly, the 4t60 looks great, as do the axles.

Our first problem we ran into was that the stock flywheel is a 3 bolt pattern. The torque converter that came with the 4t80 is a 4 bolt pattern. From my research, it appears that the 4t65 has the same 3 bolt pattern. The Aurora flywheel wont bolt up to the Riv's crank...so we don't have a working flywheel. So we have to drill new holes into the stock flywheel. We are probably going to have a machine shop or a friends drill the new holes since they have to be perfect. The same flywheel should save us from getting another starter too.

BTW, this 4t80 is an beast.

pm tubrbo400sbc... they run a 4t80 in their riv
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dreww
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Thu Nov 05, 2009 4:40 pm

yea but he's hardly ever posting now. cant be waiting weeks for a reply. he has a long post over at the dhp board with more helpful info. im just documenting my install cause its different. it a 60e to 80e swap and were doing it from the bottom. his is a 65e swap from the top.
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Thu Nov 05, 2009 5:29 pm

dreww wrote:

BTW, this 4t80 is an beast.

shocked Holy cow! I guess! shocked
Hardly looks like it would fit.

Interesting. study
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:28 pm

well it fits! We got it "stabbed" into the motor today. It was a little bit of a bitch, and its one heavy heavy trans. We got the holes drilled for the flywheel (pics below).

We had to remove the rear knock sensor and put a plug in place (pics below), and have to move that knock sensor up into the side of block. Little drilling and some thread taps and its in. (pics below). Also cut a notch of the off so the trans would fit. (pics below).

We still gotta get some replacement trans mounts for front and back...and we need the brackets off 65e trans cause the 60's mount brackets are a no go on the 4t80.
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:43 pm

Nice.. quite the conversion sir! BTW no pics yet
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dreww
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:44 pm

flywheel holes drilled



notch we cut out of edge of block housing



cutting

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dreww
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:48 pm

slightly trimming counterweight so we could fit the torque converter bolts





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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:52 pm

Didn't you like all that coolant that came out with the knock sensor? lol
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AA
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:52 pm

Nice work! How much more weight would you say the 4T80e is compared to the 60e?

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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:52 pm

plug for stock knock sensor location....it was a water jacket so plug was required.


drilling out new hole for sensor relocation...hole was already in block, we just made it a little wider.



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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:55 pm

AA wrote:
Nice work! How much more weight would you say the 4T80e is compared to the 60e?

supposed to be 60lbs...but lifting either from a lying position is very uncomfortable at best. Lucky we were both bigger guys. A third set of hands would have been nice.
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:56 pm

That knock sensor is going into a coolant passage correct?
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:57 pm



Last edited by dreww on Fri Nov 06, 2009 8:01 pm; edited 1 time in total
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 7:58 pm

98riviera98 wrote:
That knock sensor is going into a coolant passage correct?

no...its not. Turbo had a long discussion over this topic either in this thread on this board or the post he had on the DHP board. Either way, the theory is that knock would travel even better/faster through iron (block) that water.
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 8:00 pm

dreww wrote:
98riviera98 wrote:
That knock sensor is going into a coolant passage correct?

no...its not. Turbo had a long discussion over this topic either in this thread on this board or the post he had on the DHP board. Either way, the theory is that knock would travel even better/faster through iron (block) that water.

sounds like you would get more false KR from that IMO.. thats just my theory though..
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dreww
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 8:02 pm

98riviera98 wrote:
dreww wrote:
98riviera98 wrote:
That knock sensor is going into a coolant passage correct?

no...its not. Turbo had a long discussion over this topic either in this thread on this board or the post he had on the DHP board. Either way, the theory is that knock would travel even better/faster through iron (block) that water.

sounds like you would get more false KR from that IMO.. thats just my theory though..

we'll know soon enough. study
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 8:05 pm

dreww wrote:
98riviera98 wrote:
dreww wrote:
98riviera98 wrote:
That knock sensor is going into a coolant passage correct?

no...its not. Turbo had a long discussion over this topic either in this thread on this board or the post he had on the DHP board. Either way, the theory is that knock would travel even better/faster through iron (block) that water.

sounds like you would get more false KR from that IMO.. thats just my theory though..

we'll know soon enough. study
GOOD i'm VERY impressed with this build sir cool
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dreww
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Fri Nov 06, 2009 8:11 pm

98riviera98 wrote:
dreww wrote:
98riviera98 wrote:
dreww wrote:
98riviera98 wrote:
That knock sensor is going into a coolant passage correct?

no...its not. Turbo had a long discussion over this topic either in this thread on this board or the post he had on the DHP board. Either way, the theory is that knock would travel even better/faster through iron (block) that water.

sounds like you would get more false KR from that IMO.. thats just my theory though..

we'll know soon enough. study
GOOD i'm VERY impressed with this build sir cool

thanks. yea, but my mechanic brought something to my attention today....once Im getting 100% of my power to the ground...Im gonna realize that its not enough and that means more modding. lmao
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Sun Nov 08, 2009 12:16 am

Update?
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dreww
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Sun Nov 08, 2009 3:15 pm

gonna be a while. im not off to work on it until next weekend. but might be going out of town so may not finish til following weekend.
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Sun Nov 08, 2009 5:36 pm

dreww wrote:

thanks. yea, but my mechanic brought something to my attention today....once Im getting 100% of my power to the ground...Im gonna realize that its not enough and that means more modding. lmao

So then..... a Northstar? cool
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Sun Nov 08, 2009 6:20 pm

hell with that...there is alot more potential in this motor. still got new heads and cam combo, stage 3 or 4. possibly nitrous too. muhahaha! or maybe one day, whipple????
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PostSubject: Re: Write-Up: 4T80e Transmission Install   Sun Nov 08, 2009 9:49 pm



I'll definatly be looking at this install info if/when my trans dies. either that or a full L32+4T65+PCM swap.

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