4L80E In TF Truck - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mdstitt · 04-12-2012, 12:21 PM

I am wondering if a 4L80E behind a LS engine will fit under the floor or if a tunnel needs to be fabricated. I have a Direct Sheetmetal set-back firewall installed and the front suspension is No-Limit Wide Ride, so I have a little more room but I'm still not sure if it will fit.

Pictures would be great! Thanks.

hotrod1 · 04-15-2012, 02:21 PM

Go take a look at my build 56 pro touring (I think). We are putting a 4l80e behind a ls. Fits ok. We are going to set the engine back 3 inches and will need to drop the engine 3/4 inches (for handling purposes). Does not look like we will have to refab the tunnel.

What are you doing for engine mounts? Do you have a build on this site?

**mr48chev** · 04-15-2012, 03:00 PM

I think it's like running a Turbo 400 in that it depends on exactly how high and where you set the engine in.

solidaxel · 04-15-2012, 09:14 PM

Are you running that much H.P. that you need a 4L80E?
Those 80's and a bunch larger than the 60's.

mdstitt · 04-16-2012, 12:45 PM

My thought was that a 4L80 would work pretty much in it's stock form with maybe just a shift kit for the fun factor. I am figuring on roughly 450 hp to start and possibly adding a turbo later or a stroked LS3. Once more power is added, i will have to build the trans a little more.

A 60E would probably need to be built right from the get-go.

mdstitt · 04-16-2012, 12:48 PM

[/QUOTE]What are you doing for engine mounts? Do you have a build on this site?[/QUOTE]

I will be using custom engine mounts that I may fabricate myself or the tubular ones from progressive automotive.

I do not have a build on this site.

hotrod1 · 04-16-2012, 12:49 PM

You are right. The 60 needs to be built and you always are a little sketchy about it lasting. It weighs about 60-80 lbs less but I heard that they are OK up to 450.

The 80 is bullet proof as it is. Build it a little bit and it will handle what ever you throw at it, with in reason. I dont ever want to worry about it again. That is why I went with a 80 and a for 9 from curry. Drop the hammer.....every time.

mdstitt · 04-16-2012, 12:59 PM

Quote:

Originally Posted by hotrod1

Go take a look at my build 56 pro touring (I think). We are putting a 4l80e behind a ls. Fits ok. We are going to set the engine back 3 inches and will need to drop the engine 3/4 inches (for handling purposes). Does not look like we will have to refab the tunnel.

What are you doing for engine mounts? Do you have a build on this site?

Also, I checked out your build. Awesome.

I am also using the No-Limit Wide Ride on mine. I have a Direct Sheetmetal set-back firewall/floor, so I have a little more room than the stock firewall/floor allows.

I like your engine mounts too. Thanks for the replies.

wyomech · 04-16-2012, 01:00 PM

I am running a 4l80e with a 6.0 ,but I have a chevelle front IFS so I think that it moves the engine lower than the stock location

hotrod1 · 04-16-2012, 01:45 PM

The engine mounts that I am using wont work anymore. When you move the engine back that far you dont have that cross member to go down to. I was thinking about attaching to the tube that comes from the cross member for the bottom a arm bolt and then supporting that to the frame. Just a thought.

04-12-2012, 12:21 PM	#1
mdstitt Registered User Join Date: Sep 2009 Location: Chicora, PA Posts: 26	4L80E In TF Truck I am wondering if a 4L80E behind a LS engine will fit under the floor or if a tunnel needs to be fabricated. I have a Direct Sheetmetal set-back firewall installed and the front suspension is No-Limit Wide Ride, so I have a little more room but I'm still not sure if it will fit. Pictures would be great! Thanks.

04-15-2012, 02:21 PM	#2
hotrod1 56 - autocross Join Date: Apr 2010 Location: Camarillo, Ca Posts: 1,121	Re: 4L80E In TF Truck Go take a look at my build 56 pro touring (I think). We are putting a 4l80e behind a ls. Fits ok. We are going to set the engine back 3 inches and will need to drop the engine 3/4 inches (for handling purposes). Does not look like we will have to refab the tunnel. What are you doing for engine mounts? Do you have a build on this site?

04-15-2012, 03:00 PM	#3
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,718	Re: 4L80E In TF Truck I think it's like running a Turbo 400 in that it depends on exactly how high and where you set the engine in.

04-15-2012, 09:14 PM	#4
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: 4L80E In TF Truck Are you running that much H.P. that you need a 4L80E? Those 80's and a bunch larger than the 60's. __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

04-16-2012, 12:45 PM	#5
mdstitt Registered User Join Date: Sep 2009 Location: Chicora, PA Posts: 26	Re: 4L80E In TF Truck My thought was that a 4L80 would work pretty much in it's stock form with maybe just a shift kit for the fun factor. I am figuring on roughly 450 hp to start and possibly adding a turbo later or a stroked LS3. Once more power is added, i will have to build the trans a little more. A 60E would probably need to be built right from the get-go.

04-16-2012, 12:48 PM	#6
mdstitt Registered User Join Date: Sep 2009 Location: Chicora, PA Posts: 26	Re: 4L80E In TF Truck [/QUOTE]What are you doing for engine mounts? Do you have a build on this site?[/QUOTE] I will be using custom engine mounts that I may fabricate myself or the tubular ones from progressive automotive. I do not have a build on this site. Last edited by mdstitt; 04-16-2012 at 12:48 PM. Reason: quoted wrong

04-16-2012, 12:49 PM	#7
hotrod1 56 - autocross Join Date: Apr 2010 Location: Camarillo, Ca Posts: 1,121	Re: 4L80E In TF Truck You are right. The 60 needs to be built and you always are a little sketchy about it lasting. It weighs about 60-80 lbs less but I heard that they are OK up to 450. The 80 is bullet proof as it is. Build it a little bit and it will handle what ever you throw at it, with in reason. I dont ever want to worry about it again. That is why I went with a 80 and a for 9 from curry. Drop the hammer.....every time.

04-16-2012, 01:00 PM	#9
wyomech Registered User Join Date: Oct 2009 Location: wheatland wyo Posts: 103	Re: 4L80E In TF Truck I am running a 4l80e with a 6.0 ,but I have a chevelle front IFS so I think that it moves the engine lower than the stock location

04-16-2012, 01:45 PM	#10
hotrod1 56 - autocross Join Date: Apr 2010 Location: Camarillo, Ca Posts: 1,121	Re: 4L80E In TF Truck The engine mounts that I am using wont work anymore. When you move the engine back that far you dont have that cross member to go down to. I was thinking about attaching to the tube that comes from the cross member for the bottom a arm bolt and then supporting that to the frame. Just a thought.



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