engine swap

[peabody_80]

Hello: Harvey form Dallas, Tx., i have a 1994 1/2 ton pu, GMC with a 5.7 liter engine, i want to swap it out with a 2000 chevy 5.3 liter engine& tranny,1/2 ton also, i have the complete truck with engine and wiring harness, how much trouble, with this swap be.

[r.barn]

Its not hard so much as tedious with all the little details.
TONS of people do it all the time though.

http://www.ls1truck.com/forums/lsx-truck-conversions/

[tbplus10]

I'd have to ask why you want this swap?
For the trouble it'll take you wont be making a big difference in horsepower or mileage.
If its because the old engine package is high mileage you might want to look at City Motors in Dallas for a remanufactured engine/trans, unless your getting the new eng/trans real cheap they may have a better deal for you on remanufactured.

[r.barn]

I'd have to ask why you want this swap?
For the trouble it'll take you wont be making a big difference in horsepower or mileage.
If its because the old engine package is high mileage you might want to look at City Motors in Dallas for a remanufactured engine/trans, unless your getting the new eng/trans real cheap they may have a better deal for you on remanufactured.

The Gen-III motors are about 1,000,000 % better engine than the old Small Block Chevy.

[tbplus10]

I've already run into issues with Gen III motors and I cant say I share your opinion. Besides theres still many more parts available for hot rodding small blocks than there are Gen III's.
And again the expense of a replacement Gen III is still high so you have to get a good price to make the swap worth while.

[Z-71]

Sounds like a good swap to meI have always been a fan of the old GM 327,350,383...but now that I have a 323 5.3liter I will never ever go back