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Wanting to build a performance 305 TBI in a 92 RS Camaro

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Old 10-02-2010, 02:18 PM
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Default Wanting to build a performance 305 TBI in a 92 RS Camaro

Ok so I just found this site and didn't know where to post this but I could really use some info on what I could do to my 305 TBI motor in my 92 RS Camaro.I was going to drop a 350 in it but I want to work with what I have plus you don't see to many 305 beating a 350 in a race! Any info anyone can provide would be usefull.
Old 10-02-2010, 03:10 PM
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First off welcome to the site.

As far as the 305 I wouldn't even bother with it. If I was you. They are not performance motors. You will need to spend a lot of coin, just to get on par with a mild 350.

I would say drop in a 350 and haul @$$
Old 10-02-2010, 03:31 PM
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Well thanks and that's what everybody keeps tellin me lol I just wanted to be a little different from the rest.
Old 10-02-2010, 03:41 PM
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Originally Posted by Bigboi0615
Well thanks and that's what everybody keeps tellin me lol I just wanted to be a little different from the rest.
The 305 has a smaller bore, 3.736. The 350 has a 4.00" bore. There is just not enough room for big enough valves for a set of great flowing heads to make any real power.

With that being said. I have a 305 in my '76 truck. With a mild cam, dual plane intake and headers with good exhaust you can make a sweet running little small block. Just don't expect to out run a 350 with the same set up.

Also, there is a pretty good SBC/BBC forum down the page.
Old 10-02-2010, 04:02 PM
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Thanks at least I can outrun the dang mustangs with the V6's lol and I've beat a truck with a vortec V6 so I'm running pretty good I think I'll do a little to it like a cam mostly for the sound I love to hear the loping of the engine and some heads maybe and some headers just for the look and a little performance I would like to make a carb swap from that TBI and can i put in a high performance oil pump without messin something up?
Old 10-02-2010, 04:14 PM
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Good move ditching the TBI for a carb. TBI is great for a daily driver but has no place on a performance engine. And don't worry about anything but a stock oil pump for this type of build.
Old 10-02-2010, 04:21 PM
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Yeah I'm young 22 but I'm learnin I like the old school way of things I want to ditch as much wiring as possible cause of the clean look and less hassle also the carbs they make today are just as good as fuel injection
Old 10-02-2010, 04:41 PM
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I wouldn't waste too much money on a 305 TBI motor. My Dad had a 91 RS with the 305 TBI and it would get walked by our 4.2L Trailblazer.

Take a look over on thirdgen.org. Lots of good info over there. Good luck with whatever you decide though.
Old 10-02-2010, 05:20 PM
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I agree go carb. I understand wanting something different. But have you ever thought about a 5.3 swap? There cheaper then dirt and make good power. I know its FI but the LS engines look clean under the hood. Plus the support if huge for these motors.
Old 10-03-2010, 12:17 AM
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ya know your right I probally can go to a junk yard and get one cheap that was pulled out of a newer truck and it wouldn't take to much to install it either and there a bunch of stuff you can buy for a LS motor



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