Putting 350 5.7 Vortec (96-00) in a 94 2dr Yukon - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 09-24-2003, 09:02 PM
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Putting 350 5.7 Vortec (96-00) in a 94 2dr Yukon

I'm wanting to replace my 350 TBI w/ a 350 Vortec like the ones in 96-00 models. I can buy a gmgoodwrench 350 Vortec replacement for 96-00 tahoes/yukons/suburbans etc for around 2200$. I would still need to get the fuel injection system, air intake, etc etc... what else is needed? I know I will need to get a custom chip burned. Does anyone know shops in Houston who do custom work like this? I'd want to put a new roller cam in too. I'm wanting a 350 5.7 v8 Vortec with a Roller cam and all the EFI from a 96-00 truck ie. port injection. Can it be done? How much $$ am I looking at? Anyone done it here?
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post #2 of (permalink) Old 09-27-2003, 05:31 PM
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Re: Putting 350 5.7 Vortec (96-00) in a 94 2dr Yukon

An afforable idea is to upgrade your current 94 Yukon engine to Vortec heads. The Vortec heads flow much better, and produce more horsepower than the 94 Yukon TBI heads. The 94 Yukon TBI will flow only 505 CFM, so using a 600 CFM TBI is also a good idea when using the Vortec heads on a 94 Yukon engine. Edelbrock and GM now offer a TBI intake manifold for the Vortec heads.

I must admit, a complete Vortec engine swap would be very cool. If I were to swap out an engine for a 94 Yukon, I'd start with the 350 short block assembly from a 90 - 94 Police Caprice. The 90 - 94 Police Caprice 350 will have a one piece rear main seal, four bolt main block, and a roller camshaft / lifer. Then I'd add the Vortec heads. The 90 - 94 Police 350 uses a different camshaft, so I'd also use the Police camshaft, which if I'm remembering correctly is a Sealed Power part# CS808. The Police TBI used high flow injectors, so I'd use them in the 600 CFM TBI. I'd then get a custom PROM chip. My idea might not be as cool as a Vortec engine swap, but I'd have money left over and still equal or exceed the Vortec engine performance.

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post #3 of (permalink) Old 09-28-2003, 12:32 PM
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Re: Putting 350 5.7 Vortec (96-00) in a 94 2dr Yuk

I'd also consider doing a drivetrain transplant from a newer truck. I forget what willy's paid for the Vortec 454 and 3/4 ton tranny combo, but the tranny in your truck, just like mine, isn't known for being a great one. Just an idea to get you thinking......
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