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Old 07-31-2006, 07:27 PM   #1
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Car: 1992 RS CAmaro
Engine: 305
Transmission: 5 speed

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305 or 350

can anybody tell me how to tell the difference between a 305 and 350 blocks "motors", thanks
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Old 07-31-2006, 08:22 PM   #2
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Car: 1984 Z28 Hardtop / 1988 IROC T-top
Engine: 383 Carb / 305 TPI
Transmission: 4L60 / T-5
Axle/Gears: 3.54 Dana 44 / 3.08 10 bolt

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Check the casting numbers at the back of the block behind the driver side head, or measure the bore. There are no other ways.
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Old 07-31-2006, 09:48 PM   #3
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Car: 89' Iroc-Z G92
Engine: TPI 305 G92
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Axle/Gears: Limited 9 bolt, 3.45

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very true...

if you happen to have the heads off its quite apparent.. measure the bore.. otherwise the blocks are more or less identical,, minus maybe the number of main caps
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Old 07-31-2006, 09:53 PM   #4
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ok can i put a 350 cam in this 305 or intake
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Old 07-31-2006, 09:59 PM   #5
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Location: Rio Oro de Santa Ana, San Jose, Costa Rica
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Car: 1984 Z28 Hardtop / 1988 IROC T-top
Engine: 383 Carb / 305 TPI
Transmission: 4L60 / T-5
Axle/Gears: 3.54 Dana 44 / 3.08 10 bolt

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All parts are interchangeable, except pistons.

More or less.
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Old 07-31-2006, 10:05 PM   #6
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Car: 1992 RS CAmaro
Engine: 305
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ok what i have is a 1992 RS 305 TBI 5 speed. I didnt drive it this winter and it froze and cracked the block so i bought a motor from a friend who said it was a 350 so now i want to hop it a up a bit but a little confused on how and what. stay with the tbi or go carb, cam,headers intake. any advice will be appreciated thanks
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Old 07-31-2006, 10:27 PM   #7
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well it all depends on how mechnicallyinclined you are and how much trouble you like to have and how muvch $$ you like to spend

if it were mine i would be leaving it fuel injected and use 350 injectors and computer from a donor car that was a 350

for real..

save yoursel trouble and get the car going again as soon as you can, or youll have it down and undriveable forever and ever and then be wishig oyu could drive it

trust me.,

good luck
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Old 08-01-2006, 12:46 PM   #8
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Car: 89' Iroc-Z G92
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All parts from the 305 block to the "350" block are interchangeable.. Just keep in mind if you try mix parts from the 350 block with the parts from the 305 they are not always the same.. The waterpump on you 1992 305 is most likely not going to interchange with the rest of your crap from the 350.

Also you really need to know what year the "350" block actually is.. If the block is 1987+ you have a hydraulic roller cam block, if its prior 1986 and back its most likely a flat tappet hydraulic camshaft.. The problem with this is obviously the stock roller cam will not fit into the non roller block. On top of that the engine may use different lifters if its not a post 1987 block.

In this case (if its prior to 1987) the valve train on the new block will not match your 1992 305's valvetrain.
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Old 08-01-2006, 09:05 PM   #9
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Car: 1992 RS CAmaro
Engine: 305
Transmission: 5 speed

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thanks i have the camaro running but trying to find some "weekend" projects and thinking about doing a cam and headers intake and carb ditching the throttle body for now, until i can afford the ramjet???? thanks for all the input
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Old 08-01-2006, 09:05 PM
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