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#1 |
Registered User
Join Date: Sep 2018
Location: idaho
Posts: 11
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ls3 swap 4l60e hits floor
ls3 4l60e swap, transmissor hits floor, engine has a 8 Degree rake
stock oil pan, suspension drop. trans dept motor mounts. any way to lower transmission from hitting floor ? Last edited by 67 stable; 10-22-2019 at 08:15 AM. Reason: adding |
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#2 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,118
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Re: ls3 swap 4l60e hits floor
Stock LS3 oil pan? Those usually wont work on a truck, so maybe the engine is too high?
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#3 |
Senior Member
![]() Join Date: Jan 2011
Location: Hayes Va
Posts: 4,569
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Re: ls3 swap 4l60e hits floor
Ok 8 degrees in reference to what and that trans should clear the floor. Pictures would be a big help.
Jimmy
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60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic |
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#4 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,616
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Re: ls3 swap 4l60e hits floor
(Hitting the floor).....do you mean floorboard of truck?
(8 degs rake)....is your frame level..0 degs.... and your driveline is 8 deg down in the rear ....is this what your sayin? If your already at 8 deg down in the rear that's to much ..should be around 3 deg downward angle...but it needs to match the differential upward angle...what is your diff angle when the truck is sitting on all 4s? You may need to do a trans tunnel or lower engine Like said some pics will help as well as what your putting it in..
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#5 |
Registered User
Join Date: Jun 2016
Location: Phoenix AZ
Posts: 429
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Re: ls3 swap 4l60e hits floor
Which perch/motor mount/ adapter setup you using? What’s this going in?
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#6 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: ls3 swap 4l60e hits floor
Knowing the year of truck would help with giving possible solutions.
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#7 |
Registered User
Join Date: Sep 2018
Location: idaho
Posts: 11
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Re: ls3 swap 4l60e hits floor
its a 67 c-10
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#8 |
Registered User
Join Date: Jun 2016
Location: American Canyon, CA
Posts: 253
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Re: ls3 swap 4l60e hits floor
I’ve got a 68 I LS swapped an LS3 and 4L80, running CPP engine mounts, DD sliders and stock trans mount I think I was roughly 4.5* down slope. 8 sounds high.
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#9 |
Registered User
Join Date: Sep 2018
Location: idaho
Posts: 11
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Re: ls3 swap 4l60e hits floor
can anyone recommend a oil pan swap ?
Okay i think i might have figured out the clearance problem. we used the rear ( six cylinder) engine mount holes, because of the oil pan clearance. we can movie the engine forward, that might level it out, but i don't see how it will lower the tranny. how do you upload pics ? |
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#10 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
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Re: ls3 swap 4l60e hits floor
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#11 |
Post Whore
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Location: Alabama
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Re: ls3 swap 4l60e hits floor
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#12 | |
Registered User
Join Date: Sep 2018
Location: idaho
Posts: 11
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Re: ls3 swap 4l60e hits floor
Quote:
using the trans depot engine mount and stock frame mount anyway to lower the engine with different mounts ? |
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#13 |
Registered User
Join Date: Jun 2016
Location: Phoenix AZ
Posts: 429
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I used the stock v8 perches in the v8 position with 1 inch set back plates and it doesn’t hit floor. Truck oil pan. I have a couple inches of clearance between tunnel and transmission. Angle is close but I have space to dial it in.
With a 1 inch setback the engine is in the same spot as a 350. I will be using another set of adapter plates so I can do a 2 inch setback to be able to use the original driveshaft. As it is, the yoke is not as far in as I’d like. Posted via Mobile Device |
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#14 |
Registered User
Join Date: Jun 2016
Location: Phoenix AZ
Posts: 429
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Re: ls3 swap 4l60e hits floor
This is in a 1971 c10 with a low hump.
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#15 |
Registered User
Join Date: Jun 2016
Location: Phoenix AZ
Posts: 429
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Re: ls3 swap 4l60e hits floor
Looks like these mounts make your engine sit too high. Same thing happened to me with the square body c20 mounts.
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