01 Silverado LS1 / T56 conversion

[redaddiction]

Thas is awesome so can you give us a few more details on the changes you had to make for the t56 ? I am interested in doing this to my truck but move from my 4l60e

[6gear]

Since my truck was already a 5 speed I didn't have to do anything other than get a shorter driveshaft and go to 4.56 gears because of the difference in transmission gearing.

[fbs2s]

So the stock crossmember worked with the t56? everything just bolt up?

[6gear]

Originally posted by fbs2s@Aug 12 2004, 07:42 PM
So the stock crossmember worked with the t56? everything just bolt up?

Yes

[fbs2s]

I'm seriously thinking about pulling y 4.8 speed and replacing with a LS1 or a 6.0 / t56 what other parts did you need other then motor, transmission?

[6gear]

I used my 4.8 intake, wiring harness, headers, oil pan and pickup, coils and valve covers and front accessories so you pretty much only need a long block and transmission.

[litllered 4.8]

Don't make to much fun and I know it's a stupid question but the WS6 is the 5.3L out of a Z28 correct. What kind of horsepower did that bump you up to? Also you guys are the first ones that I've seen to have the 5spds did you have any troubles out of your tranny? At wot I miss third gear just about every time cause of the lack of fluid replacement by the clutch slave cylinder(I guess that's right)

[RedHeartbeat]

I believe the WS6 is a handling package for the firebird/transam. The LS6 is a performance version of the LS1 found only in Corvettes, also a 5.7L engine. The LS6 intake was installed on the 2002 LS1 engines and added about 15hp. The 5.3L engine is a sister engine of the 4.8L and 6.0L truck engines. All engines mentioned are Generation 3 engines and share common parts with slight variations. The LS1/LS6 engines were placed in camaro, firebird and GTO vehicles. The 4.8/5.3/6.0 are truck based engines. The 5.7L LS1/LS6 engines have an aluminum block and save about 70 lbs of weight over the truck's cast iron blocks. The aluminum blocks cannot be re-bored more that about .005". Later model cast iron truck blocks can handle minor oversized bores. Good thing about a LS1/LS6 block is that a replacement block isn't much more expensive than having an iron block remachined correctly, assuming align honing/cleaning/boring and honing with torque plates/new freeze plugs/cam bearings.

[litllered 4.8]

So what motor is he talking about when he says an LS1 cause 4.8,5.3,and 6.0 are all LS1 motors correct?

[Defunct SO]

No, Ls1's are in regular Vettes, '98 and up Z-28's, SS's, TA's, Formula's, GTO's.
LS6 in Zo6 Vettes.
LQ9 is the 6.0 in trucks.
I think the 5.3 is LQ4 but not sure.
They are all Gen III v-8s though