LS 4 oil pan that works on the 4t80 trans built by moroso designed by ls4 king, what do you guys think?

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//www.fiero.nl/forum/F...000123-38.html#p1488

This pan lets us use the 4t80 trans

I am sure it will work... that is how the LS4 prototypes were setup.

With needing a new pan and an aftermarket starter itis probably a $400 to $500 solution

I haven't looked at the 4T80 close enough to see if the stock LS4 starter would fit in the stock LS4 location.

Aftermarket starter , Not cheap but the trans are.

Sourcing a cheap starter should've also been the goal.

[This message has been edited by sourmash (edited 01-20-2020).]

I'm thinking the 4t80 trans is a good alternative for the LS4 swap. The price to build a 4t65 to hold the LS4 would cost alot more than this pan starter combo .

Right, but it isn't a one or the other thing. Just build it for a cheap starter since you're building it anyway. And as someone else commented regarding the drain plug location...wth?

quote Originally posted by madbrad01: I'm thinking the 4t80 trans is a good alternative for the LS4 swap. The price to build a 4t65 to hold the LS4 would cost alot more than this pan starter combo .

LS4 powertrains came from the factory attached to a 4T65eHD transmission. That is how GM designed it .

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
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I don't think the 4t65e trans is a strong enough for the ls4 , This pan will let us use the 4t80, what do you think of the added weight is going to do to the car?

The 4t65-HD with an LS4 had 303 hp in factory fresh condition and it's known for failing under warranty. One of my 3800sc cars, a Riviera series1.5 charger(?) had a warranty replacement trans which was failing again by the drive chain slipping if you give it any throttle at all. The car had zero mods.

4T60 / 4T60E holds up to a lot of torque.

GM used them behind the 4.9's with few issues.

Joe, that is one of the prototype oil pans from the development of the LS4. So at one point GM considered the starter below the oil pan for the LS4, but opted to move it to the transmission prior to production.

Guru, you are correct.
We also used a prototype trans to block bracket, billet aluminium with a GM P/N.

Would the oil pan allow using other manual transmissions such as the Fiero Getrag?

Yes... but you will likely break it (transmission) quick.

quote Originally posted by olejoedad: Used this pan (GM casting) on an LS1/4T65EHD

I know this is an older thread so forgive me. Can I use this oil pan with an lq9 to do my fiero swap with a 4t80e. I know it's not cheap and starter isn't as well-but I have a new gm lq9 set up with a new carb and trans controller too.I also know you can make some decent power with the ls4 but the 5.3 compared to the 6.0 is night and day difference-and if i'm gonna go through the trouble to do swap I want to run my lq9 with a 4t80e. I'm getting older lol I have huge feet and need and want an automatic !
If this style pan will work what axles do i need to use and where can I get that style pan and starter.. is it available through MOROSO now ?
Thanks gang..and Merry Christmas Everyone !

The GM pan pictured was the prototype pan used during the development of the LS4. It was never put into production and only a handful were ever made. If you can find one, it will work.

The moroso version is only available through LS4king and you will need to contact him through facebook.
https://www.lsxmag.com/news...a-unique-ls-oil-pan/