rusty2198

Ok I searched can't find the answer but will a lt1 trans work behind a Ls motor? I can get a 5.3 complete and was wondering if I can bolt this to my trans in my car. I have a rebuilt 4l60e with a vigilante 3500 stall. I was wanting to take this 5.3 bore it out and install factory ls1 pistons in it I checked part # on the crank and it is the same # as the 5.7l I read in other post that bored .030 makes a 5.3 a5.7

performabuilt

iTrader: (25)

Cant answer the bore question but I can answer the trans, Yes it will you will need a converter pilot spacer but other than that you should be good to go

camaroz28lt1at

iTrader: (16)

So a LT1 stall and tranny will work behind a LS motor with just a spacer? What if you have a LS bellhousing? What about the electronics, plug and play?

rusty2198

yea what camaroz28lt1at asked. I assumed that the electronics are the same but not real sure also If I get the ***** to do this swap I will be running a 99 wiring harness.

performabuilt

iTrader: (25)

96 up electronics are the same. You cannot use and LSx bell on a lt-1 trans.

9000th01ss

iTrader: (10)

So the OP wants to bolt a 5.3 to an LT1 4L60E?
Should bolt right up.

No ones bolting an LT1 trans to an LS1 in this thread.

bww3588

iTrader: (49)

yes they are...

performabuilt

iTrader: (25)

A 5.3 may not be and ls1 but is lsx based

9000th01ss

iTrader: (10)

I guess I was thinking of the early LS based 6.0 that used a 4L80E and converter that could bolt right to a Gen1, or in my case a Mark IV big block.

tptransmission

That almost sounds like an apology, I am sure glad I have never misread a thread. This crowd is brutal.

performabuilt

iTrader: (25)

Oh trust me They can be lol

tptransmission

Part of the business and good for entertainment if anything else.

95formulalt1

iTrader: (13)

it will not work!! i have a lt1 tranny and ls1 motor in my 95 ta. my car drives like ****! im looking for a ls1 tranny now. u can drive it but there is no power. shifts at 2k and wont down shift at WOT.

tptransmission

That is not related to the lt1/ Ls1 transmission they are not that much different. There is another problem such as throttle position, vehicle speed, power to the transmission ETC....

9000th01ss

iTrader: (10)

So my work truck has a 5.3 liter LS1?
I guess I can rev at people and just tell them it's got an LS1, cool. The vette engine.

rusty2198

My trans did the same thing when my TPS shorted may not be your prob but worth looking into. Sucks ***** hitting second at 2k. Also my lock up didn't work.


Hey BTW nice T/A

tptransmission

And most would believe you. A small block is still a small block no matter how you package it. Corvette engine just sounds impressive to some.

bww3588

iTrader: (49)

please tell me your joking.....

the LS1 and LM5/LM7 have the same block, just different bore, and material. if it will work on the LS1, it will work on the 5.3. simple as that.

9000th01ss

iTrader: (10)

Well since you can't detect the obvious, yes I am.

Lighten up tough guy it's the internet, we don't want to lose more money by being a smartass to someone now do we?

98childsta

iTrader: (5)

He did say please in the very beginning.