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How to tell if its a 350?

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Old 04-12-2009, 11:42 PM
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How to tell if its a 350?

Dont blast me for not searching cause I did. I have a 89 rs with a 305 tbi. I just bought another one for real cheap that I have no info on what so ever. Was left behind at a rental. I do know its a 89 rs tbi with t tops, & it has center bolt valve covers. What code would be stamped on the motor if its a 350?
Old 04-12-2009, 11:47 PM
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Re: How to tell if its a 350?

On the side of the block will be cast 5.7L

Get the casting number off the block. Since a 305 and 350 have different bore sizes, a simple casting number will be the easiest way to tell if it's a 305 or a 350.
Old 04-12-2009, 11:51 PM
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Re: How to tell if its a 350?

Originally Posted by Stephen 87 IROC
On the side of the block will be cast 5.7L

Get the casting number off the block. Since a 305 and 350 have different bore sizes, a simple casting number will be the easiest way to tell if it's a 305 or a 350.
K so if it is a 350 then the number will be in the same place as my 305?
Old 04-12-2009, 11:53 PM
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Re: How to tell if its a 350?

yeah...on the rear of the driver's side head....but if it's the original motor, in a rs...it's a 305.
Old 04-12-2009, 11:59 PM
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Re: How to tell if its a 350?

Originally Posted by 91interceptorZ
yeah...on the rear of the driver's side head....but if it's the original motor, in a rs...it's a 305.
Dam. God please send me a 350 lol. Thought anything could be an option. Oh well.
Old 04-13-2009, 12:15 AM
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Re: How to tell if its a 350?

yeah.....no tbi motors were 350's....only tpi. and not many of those....sometime you can tell by factory badges...if it says tuned port injection, it's a 5.0...if it says 5.7 tuned port injection, then of course it's a 5.7. Also you can check by the vin number..but best way if of course to check the block numbers it self..also if it came with a factory 5-speed..then it is also only a 305...
Old 04-13-2009, 12:28 AM
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Re: How to tell if its a 350?

Originally Posted by 91interceptorZ
yeah.....no tbi motors were 350's....only tpi. and not many of those....sometime you can tell by factory badges...if it says tuned port injection, it's a 5.0...if it says 5.7 tuned port injection, then of course it's a 5.7. Also you can check by the vin number..but best way if of course to check the block numbers it self..also if it came with a factory 5-speed..then it is also only a 305...
How sure R U about the tbi only on 305's? seems like I read a lot about 350 tbi motors. Maybe just on the trucks? It has a 700r4. Better yet ill google the history of the camaro. Find out for sure. Should have done that first. Sorry.
Old 04-13-2009, 12:31 AM
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Re: How to tell if its a 350?

check the vin look it up on the camaro or berlinetta web site and it will tel u what letter or number to look for.it will also tell u what tranny have ur hp and torque
Old 04-13-2009, 12:35 AM
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Re: How to tell if its a 350?

Google? Just go to the TGO home page and read through the tech data.

According to the tech data, an 89 RS with a V8 will be a 305 with a TBI. In 89, the 350 wasn't offered to the RS and the 350 had TPI.
Old 04-13-2009, 12:40 AM
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Re: How to tell if its a 350?

Here's a list of block #.
http://www.mortec.com/castnum.htm
Old 04-13-2009, 12:43 AM
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Re: How to tell if its a 350?

Originally Posted by Stephen 87 IROC
Google? Just go to the TGO home page and read through the tech data.

According to the tech data, an 89 RS with a V8 will be a 305 with a TBI. In 89, the 350 wasn't offered to the RS and the 350 had TPI.
Ya I knew it had to be to good to be true. It was not made with a 350.
Old 04-13-2009, 09:45 PM
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Re: How to tell if its a 350?

check the VIN# if the 8th number is an 8 then its a 350 but my car is the same as urs but with out t-tops and the number on mine is "E" hope that helps ya.
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