1994 Silverado 4.3 V6 to LSX swap complete

[1991SSP]

Thanks, I just gotta do something with that upper radiator hose, that coupler looks like crap to me

[dimebagged]

Did your factory Y pipe bolt right up to the new exhaust manifolds? If not what did you have to do? Thx

[1991SSP]

No, I just bolted up short pieces of the stock pipe coming off each manidfold, they saved them for me here at a local yard so that I'd have enough to bolt in my 02 sensors, The drivers side was right against the frame, the exhaust shop took the stock piece of pipe off the manifold and made a cut on the backside of the pipe, reinstalled it back on the manifold and used a bar to bend it away from the frame, then took it back off and patched the opening with some scrap exhaust, he was actually pretty creative and it looked good when he was done with it, from there it's a true dual setup with X pipe section and bassani mufflers and bassani tips

[TRPLXL2]

Very clean install looks good, I know that once the swaps all finished it's a big relief. Enjoy your new ride..

[1991SSP]

thanks for the compliment, it's a blast to drive!! I have yet to check on the highway mpg but for now the mileage that it's getting running around town is alot better than the crap box 4.3 got

[Paulster2]

thanks for the compliment, it's a blast to drive!! I have yet to check on the highway mpg but for now the mileage that it's getting running around town is alot better than the crap box 4.3 got

Isn't that amazing? How a V8 can get better gas mileage than a V6 (or I6 for that matter) is beyond me. Technology is a great thing!

[AirSchatz]

Sweet conversion bro! thanks for sharing!

[gagliano7]

Thanks, I just gotta do something with that upper radiator hose, that coupler looks like crap to me

I am sure you know but that nipple on the radiator is threaded on the inside.

[1991SSP]

I am sure you know but that nipple on the radiator is threaded on the inside.

I noticed some are threaded and some are not, just my luck that mine is not threaded

[404LS]

Nice swap - I'm thinking about doing the same with a 96 4.3... how long did it take you once you had the majority of your parts and what was your biggest challenge that you didn't expect?