305 to 350
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Junior Member
Joined: Jun 2010
Posts: 2
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From: denver colorado
Car: 84 camaro z28
Engine: 305 H.O
Transmission: ?
Axle/Gears: ?
305 to 350
i have a 1984 camaro z28 with a 305. im wondering do i absolutely have to get a 350 with all the smog and emission things on it like my 305 or can i change it to just a straight 350 and just change a few things? dont know much about cars haha
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Welcome aboard thirdgen.org.
The simple answer is you can put everything attached to your 305 onto a 350.
The details aren't quite so simple, as there were little things that changed over the years. I can't say I've ever seen a "straight" 350, and I took my first driver's test in one of the first model year cars the 350 was offered.
Do you have a 350 candidate identified? If so, if you provide the details (engine year, model vehicle it came from, etc.), we can provide you more details on what may need to change (may not be anything).
The simple answer is you can put everything attached to your 305 onto a 350.
The details aren't quite so simple, as there were little things that changed over the years. I can't say I've ever seen a "straight" 350, and I took my first driver's test in one of the first model year cars the 350 was offered.
Do you have a 350 candidate identified? If so, if you provide the details (engine year, model vehicle it came from, etc.), we can provide you more details on what may need to change (may not be anything).
Thread Starter
Junior Member
Joined: Jun 2010
Posts: 2
Likes: 0
From: denver colorado
Car: 84 camaro z28
Engine: 305 H.O
Transmission: ?
Axle/Gears: ?
Re: 305 to 350
i dont really have any specific engine in mind but what i meant by straight 350 is like without the smog pump and all the hoses goin everywhere like i have on my 305 now. like i said i dont know much about cars so it might be a lil bit diffucult for me to explain what i mean haha. but the best way i could describe it would be like when you open the hood of lets say a 69 camaro with a 350 in it you see an engine with a hose from the radiator and thats about it but when i open my hood ive got fifty hoses goin everywhere and im wondering if i can swap my engine to a 350 without all that junk and still have eeverything run right because the car and motor needs all those hoses goin everywhere to do so
Supreme Member
Joined: Sep 2009
Posts: 1,319
Likes: 0
From: Tigard, OR
Car: 87 iroc-z camaro
Engine: 305TPI
Transmission: 700R4
Axle/Gears: G92 3.23 posi
Re: 305 to 350
well to answer (somewhat) your last post, if you want your engine bay clean as possible without a bunch of hoses and everything, then you will need a non cc carb, no power anything, no heater/ac, no power brakes, etc.
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Ah, I now see in your user info, "denver colorado".
Guess what - you need all that "stuff". You can clean it up a little by rerouting some hoses and wires, but in order to keep Air Care Colorado happy, it all needs to be present and functioning.
A little confirmation about your original engine would be helpful. The 8th character of the VIN tells what the factory installed. If it's "H", you have the "base" LG4. If "G", it is indeed the HO model, and things like the exhaust for the L69 are much more up to the task of supporting a 350.
All is not lost, though. I took an LG4, installed different heads, cam, headers, and exhaust, along with all of the original emissions stuff, and passed through Air Care with flying colors.
Guess what - you need all that "stuff". You can clean it up a little by rerouting some hoses and wires, but in order to keep Air Care Colorado happy, it all needs to be present and functioning.
A little confirmation about your original engine would be helpful. The 8th character of the VIN tells what the factory installed. If it's "H", you have the "base" LG4. If "G", it is indeed the HO model, and things like the exhaust for the L69 are much more up to the task of supporting a 350.
All is not lost, though. I took an LG4, installed different heads, cam, headers, and exhaust, along with all of the original emissions stuff, and passed through Air Care with flying colors.
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