Thread: 350 gen I vs vortec rebuild

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Not much is interchangeable, oil pump, main bearings, rod bearings, pistons and rods.

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So are you saying the only things that ARE interchangeable are the oil pump, rod and main bearings, pistons and rings? Everything else will have to be vortec specific? What about the rods themselves, and I have a brand new timing chain and windage tray sitting on the shelf. I am going to be putting on an intake and carburetor and this is going to be swapping out a v6 in a 1994 single cab c1500. I want to beef up a 350 and figured this would be a good candidate because it was a roller engine. I have several older 350 but they would have to be machined and I was hoping to save that money to put else where. I'm not looking for high horsepower but want to concentrate on getting as much torque as my dollars will allow. Any suggestions?

Originally Posted by mplumb59

So are you saying the only things that ARE interchangeable are the oil pump, rod and main bearings, pistons and rings? Everything else will have to be vortec specific? What about the rods themselves.

Rods and pistons will interchange. Heads were designed for flat-top pistons.

Originally Posted by mplumb59

Any suggestions?

Yes, rather than setting yourself up for some pretty stiff Federal fines for defeating factory emissions control systems, rebuild the V6, sell the truck and purchase an older platform that will be emissions exempt so you can use a carburetor on the L31.

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Duplicate post. Please remove.

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No emissions concerns for me here in Louisiana and if this state ever moves in that direction this truck will likely be an antique. I really like this body style for the project I'm building and don't want to go with anything different. I have thought about an ls swap too but I'm not real big on computers. My issues are what should I build, the vortec, a 60's or 70's 350 or do the ls1.

Originally Posted by mplumb59

No emissions concerns for me here in Louisiana and if this state ever moves in that direction this truck will likely be an antique. I really like this body style for the project I'm building and don't want to go with anything different. I have thought about an ls swap too but I'm not real big on computers. My issues are what should I build, the vortec, a 60's or 70's 350 or do the ls1.

You failed to read my reply. I said FEDERAL, not State. I don't do anything that is against the law and I strongly recommend that you don't either. The first emissions controls showed up on the 1967 model year, so choose any truck built before then and have at it.

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